a layer of cells in a plant stem from which new tissue grows
Answer: Option B.
Explanation:
The vascular cambium is referred as the main part of the dicot and gymnosperm plant.
Vascular cambium helps in producing secondary xylem and phloem. Xylem is produced inwards, towards the pith and phloem is produced outwards, towards the bark.
Vascular cambium do not support transport water, minerals or food through the plant and also known as main cambium, bifacial cambium, and wood cambium.
Vascular cambium are found in dicots and gymnosperms and not in monocots so it lack secondary growth.
Hence, the correct option is B.
Explain how land cover is related to land use
Answer:
Explanation:
how people are using the land. ... Land cover data documents how much of a region is covered by forests, wetlands, impervious surfaces, agriculture, and other land and water types.
16. What's developed as a result of the electron transport chain?
Answer:
Electrochemical proton gradient
Explanation:
As electrons are passed from one protein complex to another in the mitochondria, the tapped energy is used to pump protons to the intermembrane space between the inner and outer mitochondrial membrane. This creates a proton motive forces whose potential is harnessed by the ATP synthase to phosphorylate ADP to ATP (the cell energy molecule).
Answer:
The electron transport chain reaction occurs in the cristae of the mitochondria.
what are some examples of freshwater ecosystems? I need this by 5/22/2019 SO PLEASE ANSWER IT CORRECTLY IT'S URGENT THANKS
Freshwater ecosystem examples are lakes, rivers, ponds, springs, wetlands and streams.
Help! Give an example of two other body systems that work together, and explain how they support each other.
Answer:
A good example is pulmonary system and the circulatory system.
The body needs oxygen. The respiratory system is where we get the oxygen supply. When it enters our lungs, how does it go around? This is where the circulatory system comes in. When blood enters our lungs, it picks up the oxygen we need. The primary function of the blood is to distribute nutrients, hormones, and Oxygen to the other cells of the body. Another important function of blood is to remove wastes from the cell like carbon dioxide. The carbon dioxide is brought to the lungs which we will expel when we exhale.
Answer: You could put the pulmonary system and the circulatory system.
Explanation:
(Im in 6th grade it might not be correct sorry)
Glacial erosion creates a number of landscape features. A low point along an arête that acts as a pass between glacial valleys is known as a/an A. esker. B. col. C. drumlin. D. horn.
Answer:
A low point along an arete that acts as a pass between glacial valleys is a B. Col
Explanation:
Answer:
B. col.
Explanation:
A col is the lowest point (or dip) along an arête (a narrow ridge between two valleys), which serves as a pass from one side of a mountain range or ridge to another. A col is usually found between mountain peaks in a summit line, typically on a prominent ridge or arête. A col may also be referred to as a notch or a gap. An example of a col is the Indira Col on the Indira Ridge in Siachen Muztagh in the Karakoram Range.
what are the different types and rates of evolution?
Answer:
divergent, convergent, and parallel evolution.
Explanation:
Factors such as environment and predation pressures can have different effects on the ways in which species exposed to them evolve. Not sure about rates. hope this can help.
Which of the following describes a relationship of predator-prey?
Oxpecker birds eat parasitic ticks off the backs of zebras
A moray eel eats a fish swimming by
A tick attaches itself to the inside leg of a deer
Birds feed off the insects that are stirred up from the grasses as cattle move through
Answer:
Hello,
The correct answer option is B. A moray eel eats a fish swimming by
Explanation:
A Moray eel is carnivore and feeds on fish, octopuses or crabs. In this case the Moray eel is the predator whereas the fish is the prey.In a predator-prey relationship, one of the species will be hunted for food by the other species.This relationship is important because it can help to slow down the spread of diseases.
Best of Luck!
Answer:
The correct answer is A moray eel eats a fish swimming by.
Explanation:
i took the k-12 test and got 100%
what color light would most likely be present at 200 meters below sea level
and why
Answer: Sunlight entering the water may travel about 1,000 meters (3,280 feet) into the ocean under the right conditions, but there is rarely any significant light beyond 200 meters (656 feet).
The ocean is divided into three zones based on depth and light level. The upper 200 meters (656 feet) of the ocean is called the euphotic, or "sunlight," zone. This zone contains the vast majority of commercial fisheries and is home to many protected marine mammals and sea turtles.
Only a small amount of light penetrates beyond this depth.
The zone between 200 meters (656 feet) and 1,000 meters (3,280 feet) is usually referred to as the “twilight” zone, but is officially the dysphotic zone. In this zone, the intensity of light rapidly dissipates as depth increases. Such a minuscule amount of light penetrates beyond a depth of 200 meters that photosynthesis is no longer possible.
The aphotic, or “midnight,” zone exists in depths below 1,000 meters (3,280 feet). Sunlight does not penetrate to these depths and the zone is bathed in darkness.
‘Photic’ is a derivative of ‘photon,’ the word for a particle of light.
At 200 measures below ocean position, blue light is most likely to be present due to the immersion characteristics of water which allow blue and green wavelengths to access deeper, with blue light scattering by water motes.
At 200 measures below ocean position, blue light would most probably be present. This is due to the immersion characteristics of water, where different wavelengths of light are downgraded at different rates. Water absorbs the longer wavelengths like red first in the upper 10 m, orange by about 40 m, and unheroic before 100 m, leaving the shorter wavelengths like blue and green to access further. The depth of 200 measures is within the dysphotic zone, also known as the twilight zone, where there's veritably little light, and it doesn't support photosynthesis. Since the photic zone extends to the upper 200 m, and blue light penetrates the deepest, it's the only color that can be perceived at this depth under natural conditions without artificial illumination. The clear water of the open ocean allows blue light to access deeply and be scattered by water motes, further buttressing the dominance of blue at lesser depths.
Which of the following is not a type of variable in a scientific experiment? A. Independent B. Control C. Dependent D. Observation
Answer: The answer is the D. "Observation" is not a variable in an experiment.
Explanation: Research variables are factors that can be manipulated, measured or those that we try to explain through other variables. "Observation" is not a variable in an experiment, but it is the first step and fundamental part in the scientific method, in which the experiments are contained (experimentation stage). Observation is the information recorded during an experiment, obtained through the senses or through the registration of information on scientific instruments.
Observation is not a type of variable in a scientific experiment.
When performing an experiment, we can identify three kinds of variables:
Dependent variableIndependent variableControl variableA dependent variable is the one we will be focused on during the experiment, it is what we will be measuring. An independent variable is one that will not change in response to other variables in the experiment, it is not affected by the others and is often changed. Lastly, a control variable is any variable that we keep the same throughout the experiment. Since these are the only 3 variables in an experiment, we can say that only option D is correct, it is not a type of variable.
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3 things your body does everyday which require energy
Our bodies use energy daily for essential functions such as breathing, maintaining basal metabolic rates (BMR), and cellular activities, which involve both minor muscle movements and major physical exertions. These activities highlight the importance of adequate nutrient intake to support energy production for bodily functions.
Explanation:Every day, our bodies perform numerous tasks that require energy, illustrating the fundamental biological principle that all living things need resources and energy to carry out life processes. Here are three critical activities:
Breathing: The respiratory system works continuously to supply oxygen to the cells for cellular respiration, a process that converts oxygen and glucose into energy (ATP), carbon dioxide, and water. This energy is vital for maintaining bodily functions and activities.Maintaining Basal Metabolic Rate (BMR): A significant portion of the energy derived from food is used to sustain the BMR, which includes essential functions like body heat regulation, heart rate, blood circulation, and functioning of organs like the liver and brain. Notably, the liver consumes 27% of BMR energy, while the brain uses 19%.Cellular Activities and Muscle Movements: Energy is utilized not only for heavy physical activities but also for minor muscle movements associated with sleeping or gesticulations. Moreover, energy is critical for maintaining electrical potentials in nerve cells, crucial for nerve impulses, and supporting chemical processes in organs such as the kidneys and liver.These activities underscore the importance of a balanced diet rich in nutrients that can be converted into ATP, the cellular energy needed for our bodies to function efficiently.
An organism with five pairs of chromosomes can have___ genetic possibilities from independent assortment of its single gamete
Answer:
The answer is 32.
Answer:
An organism with five pairs of chromosomes can have 32 genetic possibilities from independent assortment of its single gamete
Explanation:
An organism with five pairs of chromosomes can have 32 genetic possibilities from a variety independent of its single gamete.
To achieve this result, you just have to do a very simple calculation using formula 2ⁿ. In this formula, the number 2 indicates the number of possible gamete combinations, while the letter "n" indicates the number of haploid chromosomes the individual has. Thus, for the individual exposed in the above question, the letter "n" would be replaced by the number 5, indicating that: 2⁵ = 2x2x2x2x2 = 32.
in a population of peppered moths, the allele frequency of d shifts from 0.49 to 0.64 over successive generations. That means this population is NOT an equilibrium and is therefore evolving.
True
or
False
Answer:
True
Explanation:
Allele frequency as the name says, basically indicates the relative frequency of a particular allele at a particular locus. This is mostly expressed in the form of percentage or fraction.
The formula for calculating it is:
Allele frequency = no. of copies of allele at a particular location / total no. of all alleles for a gene in a population.
According to Hardy Weinberg theorem, if a population has constant allele frequency from one generation to another, it means that the population is evolving. So, as indicated in question that allele frequency is changing, it means that population is evolving.
Hope it helps!
True, the shift in the allele frequency of d from 0.49 to 0.64 over successive generations in a population of peppered moths indicates that this population is not at equilibrium. The change in coloration, as a result of industrial soot affecting the environment, led to the rise in frequency of the darker moths as they had a higher survival rate. This change in allele frequency is an indication of evolution, as stated by Hardy-Weinberg principle.
Explanation:True, this population is indeed evolving. The shift in the allele frequency from 0.49 to 0.64 in successive generations of peppered moths indicates that this population is not at equilibrium, hence it is evolving. This evolution occurs in response to changes in the environment that affect the survival and reproduction of the moths, a process referred to as natural selection.
The classic example provided by the peppered moth during the Industrial Revolution in England illustrates this. Prior to the onset of industrial factories, the moth population were predominately light in color, an advantageous trait that allowed them to blend into their surroundings of light-colored trees and lichens. However, the industrial soot emitted from the factories darkened the trees, rendering the light-colored moths more easily spotted by predatory birds. Consequently, the moths with the darker or 'melanic' form had higher survival rates as they were better adapted to the new, darker environmental conditions, hence increasing in frequency.
According to Hardy-Weinberg principle, if the frequencies of alleles or genotypes deviate from the value expected, then this indicates that the population is indeed evolving, as is the case here.
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Which of the following is NOT a function of the stem of a plant?
a
storage of nutrients
b
absorption of water from soil
c
structural support for the plant
d
transport of water from roots to leaves
Answer:
Absorption of water from soil
Explanation:
That's what the roots do :)
Absorption of water from soil is not a function of the stem of a plant.
What is Stem?In botany, the stem is the axis of the plant that produces leaves, buds, and shoots that terminate in roots. The stem transports nutrients, water, and minerals to other plant parts. It can also store nutrients, and green stems can even manufacture their own food.
The principal vertical stalk in most plants is the stem, though it can vary in appearance and resemblance to other plant parts (e.g., underground stems may look like roots).
The stem's main jobs are to support the leaves, carry nutrients and water to the leaves so that photosynthesis can turn them into useful substances, and then carry those substances from the leaves to other sections of the plant, including the roots.
Therefore, Absorption of water from soil is not a function of the stem of a plant.
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what is the effect on the blood flow in the blood vessel artery when a person is running ?
The arteries (red) carry oxygen and nutrients away from your heart, to your body's tissues. The veins (blue) take oxygen-poor blood back to the heart.
Increases in peripheral resistance, blood volume, and cardiac output result in higher blood pressure. Conversely decreases in any of these factors lead to lower blood pressure. Three main sources of peripheral resistance: Blood vessel diameter, blood viscosity, and total vessel length.
Cardiovascular Response to Exercise. As muscles begin exercising, the arterioles serving the muscle dilate to provide more blood flow. However, arterial pressure does not decrease because other parts of the cardiovascular system are adjusted to support the increased blood flow to the muscles.
Hope this helps :)
Final answer:
While running, a person's body increases blood flow to support increased oxygen and nutrient demands. The average radii of blood vessels increase, and the viscosity of the blood decreases to facilitate this. These changes enhance the delivery of oxygenated blood to active muscles.
Explanation:
When a person is running, the body's demand for oxygen and nutrients increases sharply. This demand is met by the cardiovascular system, which adjusts by increasing blood flow. During vigorous exercise such as running, the heart rate and blood pressure rise to pump more blood through the body. Additionally, there are changes at the microvascular level, where the arterioles and capillaries dilate—a process known as vasodilation. This increases the radius of the blood vessels, thereby reducing the resistance to blood flow. According to the principles of fluid dynamics, blood flow (Q) is directly proportional to the fourth power of the vessel radius (r) as per the formula Q = πr^4ΔP/8ηl, where ΔP is the pressure difference, η is the viscosity, and l is the length of the vessel. Therefore, during running, the average radii of blood vessels increases to accommodate the increased blood flow, which can be up to 10 times the resting rate, and the blood's viscosity decreases, allowing the blood to flow more easily.
Furthermore, due to the increased metabolic activity, the body also releases certain chemicals like nitric oxide which contribute to vasodilation. The overall effect is that more oxygenated blood reaches the muscles that are working hard during exercise. As a result, blood flow in the artery and other vessels increases, but it's important to note that this hyperemia, or increased blood flow, is tightly regulated and is a normal physiological response to exercise.
In contrast, the presence of plaques in the arteries can greatly reduce blood flow. A decrease in the vessel's radius due to plaque buildup can lead to a significant decrease in blood flow, which the body may attempt to compensate for by increasing blood pressure, but this can be hazardous to cardiovascular health. It's worth noting that during rest, the arterioles and capillaries also allow for an efficient exchange of substances due to their slower blood flow rate.
Which of the following equations represents the right chemical process that occurs in photosynthesis?
A. Six molecules of carbon dioxide plus sugar plus light energy converts six molecules of carbon and six molecules of oxygen.
B. Six molecules of water plus six molecules of hydrogen plus six molecules of oxygen converts light energy plus sugar.
C. Six molecules of carbon dioxide plus six molecules of water plus light energy converts six molecules of oxygen plus sugar.
D. Six molecules of oxygen plus six molecules of water plus light energy converts six molecules of carbon dioxide plus sugar.
Answer:
C. Six molecules of carbon dioxide plus six molecules of water plus light energy converts to six molecules of oxygen plus sugar.
Explanation:
Photosynthesis is the process in which green plants manufacture their food in the presence of carbondioxide and water using light energy. The product of photosynthesis is usually sugar and oxygen gas.
The equation is given below:
6CO₂ + 6H₂O + light energy ⇒C₆H₁₂O₆ + 6O₂
sugar
This is the equation of photosynthesis. Photosynthesis is used by green plants which are autotrophs to manufacture their food.
"The correct option is C. Six molecules of carbon dioxide plus six molecules of water plus light energy converts to six molecules of oxygen plus sugar.
Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy, usually from the sun, into chemical energy in the form of glucose (sugar). The overall chemical equation for photosynthesis can be written as follows:
[tex]\[ 6CO_2 + 6H_2O + \text{light energy} \rightarrow C_6H_{12}O_6 + 6O_2 \][/tex]
This equation shows that six molecules of carbon dioxide (COa‚) react with six molecules of water (HaO) in the presence of light energy to produce one molecule of glucose (C₆Hâ‚â‚‚O₆) and six molecules of oxygen (Oâ‚‚).
Let's analyze the options given:
A. This option incorrectly suggests that sugar is a reactant rather than a product.
B. This option incorrectly includes hydrogen (Hâ‚‚) as a reactant and omits carbon dioxide (COâ‚‚).
D. This option incorrectly suggests that oxygen (Oâ‚‚) is a reactant rather than a product and omits carbon dioxide (COâ‚‚).
Option C correctly identifies the reactants as carbon dioxide (COâ‚‚) and water (Hâ‚‚O), and the products as oxygen (Oâ‚‚) and glucose (sugar), with light energy being the driving force for the reaction."
what is the next step in muscle contraction after the actin changes shape?
Answer:
The myosin filament or more precisely the myosin head can now bind to the actin forming the cross bridges followed by a power stroke during which actin slides over myosin.
Explanation:
The muscle contraction can be explained by sliding filament theory bu Huxley and Huxley. The two muscle proteins which take part in muscle contraction are myosin and actin.
Myosin: It is a hexameric protein. Each monomer is called meromyosin. Each meromyosin has two important parts, a globular head with a short arm and a tail. The head forms cross bridges with the actin filament. Myosin head acts as ATPase enzyme. When ATP binds, head acts as enzyme hydrolyzing the ATP to produce energy. The head also has the site for binding of actin.
Actin filament: It contains three proteins, filamentous actin, tropomyosin and troponin. Filamentous actin contains active site for myosin binding but at rest, tropmyosin covers the myosin binding site. This prevents the cross bridge formation. Tropomyosin are held in place by troponin molecules.
When calcium is available, the binding of calcium to a TpC sub-unit of troponin causes the shifting of tropomyosin-troponin complex. Now actin can attach to myosin head and slide over myosin.
The actin filaments slide over the myosin filament by the the formation of cross bridges and during this process the I-band gets reduced whereas the A band remain the same. The lengths of actin and myosin filaments remain unchanged.
Answer:
actin changes shape
Explanation:
ap ex
A purebred wingless red eyed fruit fly is crossed with a purebred winged sepia-eyed fruit fly to produce f1 flies. The f1 flies are crossed to produce f2 flies. What is the phenotypic ratio of the f2 flies
The genotypes are all of them and the phenotypes are every option that has at least 1 capital letter. The genotypes are internal features and the phenotypes are the features that are visibly present.
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Three portions of a blood sample show clumps in anti-a serum, but not anti-b or anti-rh sera.
Which blood type does the test indicate?
A. A negative (A-)
B. AB positive (AB+)
C. B negative (B-)
D. O negative (O-)
If you add a drop of anti-A serum and it clumps the blood type has blood type B markers that will fight off the A serum making the blood type B....
I got this because...
there is A, B, AB, and O blood
A has anti-B clumping proteins
B has anti-A clumping proteins
AB has no clumping proteins
O has anti-A, anti-B, and anti-AB clumping proteins
so the only on one with anti-A clumping proteins is blood type B
hope this helps :)
The blood type that a blood sample showing clumps in anti-a serum, but not anti-b or anti-rh sera is A negative (A-) (Option A).
The membrane of red blood cells contains many different types of antigens. For example, individuals having a blood type AB have red blood cells with both A and B antigens.A O negative (O-) blood test indicates that the blood sample does not have any antigens, whereas an A negative (A-) test indicates that the blood sample contains only A antigens. It is for that reason that O-negative individuals are universal donors because persons having this type of blood are compatible with all blood types. Moreover, AB-positive individuals are universal recipients because persons with this type of blood can receive blood from all blood types.In conclusion, the blood type that a blood sample showing clumps in anti-a serum, but not anti-b or anti-rh sera is A negative (A-) (Option A).
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In which layer does mantle convection occur?
Answer:
The correct answer is asthenosphere.
Explanation:
The Earth comprises four layers, that is, the crust, the mantle, the inner core, and the outer core. The magnetic field of the Earth is the amalgamation of the convection it attains from the Coriolis Effect and the outer core. The layer of the Earth where convection of the mantle takes place is the asthenosphere.
Answer:
(ANSWER): ASTHENOPHERE
Explanation:
Messanger RNA (mRNA) carries the instructions to a particular __;to ribosomes. The process of producing mRNA from instructions in the DNA is called __.
Durning transaction, the DNA molecule unwinds and separates, exposing the nitrogenous bases. Free RNA ___ pair with the exposed bases. There is no ___ (t) in RNA. ____ (U) pairs with adenine (a) instead. RNA contains the suger ___ Instead of deoxyribose. The mRNA molecule is completed by the formation of ___ between the RNA ___, and it then separated from DNA. The mRNA molecule is a ___ strand, unlike DNA.
mRNA carries genetic instructions from DNA to ribosomes, a process called transcription. Through this process, free RNA nucleotides pair with exposed DNA bases. Unique characteristics of RNA include the presence of uracil instead of thymine, ribose as its sugar, and its single-stranded nature.
Explanation:
Messenger RNA (mRNA) carries the genetic instruction that is transcribed from a specific gene in the DNA to the ribosomes. This process of producing mRNA from the DNA is called transcription. During transcription, the DNA molecule unwinds and separates, thereby exposing the nitrogenous bases. The free RNA nucleotides pair with the exposed bases. Unlike DNA, in RNA there is no thymine (T). Instead, uracil (U) pairs with adenine (A). RNA contains the sugar ribose instead of deoxyribose that is in DNA. The mRNA molecule is completed by the formation of phosphodiester bonds between the RNA nucleotides, and it then separates from the DNA. Unlike DNA, which is double-stranded, the mRNA molecule is a single strand.
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Nitrogen is changed from a free gas to a usable form by a process called
nitrogen fixation.
nitrogen decomposition.
nitrogen compounding.
nitrogen circulation
Answer:
nitrogen fixation.
Explanation:
Nitrogen fixation is the process by which the combination of molecular nitrogen oxygen or hydrogen is given to give oxides or ammonium that can be incorporated into the biosphere. Molecular nitrogen, which is the majority component of the atmosphere, is inert and not directly usable by most living beings.
To Pea plants with yellow peas are crossed. Most of their offspring have yellow peas, but about 25% of the offspring have green peas. For Pea color, yellow is a dominant trait and green is the recessive trait. What does this tell you about the two parent plants?
A. The parent plants have only dominant alleles for pea color.
B. The parent plants are homozygous for pea color.
C. The parent plants are heterozygous for pea color.
D. Pea color follows an incomplete dominance pattern of inheritance.
Answer:
b
Explanation:
The two parent pea plants are likely heterozygous for the pea color trait, meaning they each carry one dominant (yellow) and one recessive (green) allele. This would account for the observed offspring pea color ratios. So, the correct option is C.
Explanation:The information given in the question suggests that the parent pea plants are both heterozygous for the pea color trait. This means that they each carry two different alleles for the pea color gene - one dominant (yellow) and one recessive (green). When they reproduce, each parent plant contributes one of these alleles to their offspring, resulting in an approximately 3:1 ratio of yellow to green peas in the offspring. This is a characteristic outcome of a Punnett square for parents that are heterozygous for a particular trait.
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True or false
the closer the gene sequence matches between species, the less related they are and the further back in time you will find a common ancestor?
False. The closer the matching percentage is the earlier you will find a common ancestor.
According to the kinetic theory, what is the kinetic energy of a gas molecule proportional to?
A.volume of the gas
B.pressure of the gas
c. temperature of the gas
D. density of the gas
Answer:
c. temperature of the gas
Explanation:
According to Bernoulli, in the kinetic theory the pressure of a gas is the consequence of the impacts of the particles of the gas towards the walls of the container in which it is located.
In the expressions PV = k T and P = m (v2) / 3V. If these two equations refer to the same reality, then kT = m (v2) / 3. From here we can say that the temperature of a gas, T = 2 / (3k) m (v2) / 2 is proportional to the average kinetic energy of its molecules.
What statement best compares photosynthesis and cellular respiration?
A.
Photosynthesis breaks down sugars to release energy, while cellular respiration stores energy as sugars.
B.
Photosynthesis only takes place in the light, while cellular respiration takes place in the light and dark.
C.
Both photosynthesis and cellular respiration break down sugars to release chemical energy.
D.
Both photosynthesis and cellular respiration take place during the light and during the dark.
Answer:
B
Explanation:
Photosynthesis only takes place in the light, while cellular respiration takes place in the light and dark.
https://youtu.be/xmfhKbmQhq0
Photosynthesis vs. Cellular Respiration Comparison
Answer:
Photosynthesis only takes place in the light, while cellular respiration takes place in the light and dark.
Explanation:
I found this really cool table of comparison, and second from the bottom it shows that Photosynthesis requires light while cellular respiration does not. This means it can occur in the light or dark (:
Which force created a fault block mountain
• compression
• shearing
• subduction
• tension
Answer: Tension
Explanation:
Tension force is known to be force that pulls rocks apart thereby causing normal faults. Also, it is known to be a force that causes rocks to stretch in order to be thinner in the middle. However, fault Block Mountain is usually formed when plates are moving apart or when large blocks from the earth crust drop down as a result of tension force in relative to other blocks.
Answer:
Tension
Explanation:
I took quiz and got it correct
An organism takes care of its young and produces few offspring. What type of organism is this?
A. K-strategist B. R-strategist C. L-strategist D. S-strategist
Answer:
K-strategists
Explanation:
Reproductive pattern in organisms can be typically categorised into two:
1. K- Strategy
2. R- Strategy
K-strategists are organisms that lives in very stable environments and gives birth to fewer organisms. Most of these organisms reproduce close the carrying capacity of their habitat. They offer support and protection to their progeny to the points where they become indepedent. The mortality rate is very low in such organisms and so is the birth rate too.
R-strategists are organisms whose main aim is to populate and dominate an environment. They reproduce exponentially and offers no life support to their progeny in their early developmental stage. They often occupy unstable and highly unpredictable environments. Most R organisms have a very low and short life expectancy. Since they produce more offspring and they live under adverse environments, mortality rate is high.
Examples of K-strategists are elephants and man
Examples of R-stategists are grasses and microbes.
Answer:
A
Explanation:
The students in Mrs. Smith's class tested various paper towel brands for strength. The students collected data after they each performed the same experiment with the different brands. When comparing results; Bounty came out on top. How do we know the test results were valid?
Answer:
The Answer Is C
Explanation:
Final answer:
The validity of the paper towel experiment is supported by consistent setup, methodological uniformity, reproducibility, and sufficient sample size. Assuming these criteria were met, the findings suggesting Bounty as the strongest brand is likely valid. Moreover, consistency and controlled conditions are critical for reliable scientific results in various experiments.
Explanation:
To ascertain the validity of the test results from Mrs. Smith's class experiment, one must consider certain criteria. Several factors contribute to the validity of the paper towel brand strength experiment:
Consistency in the experiment setup for testing each brand of paper towel to minimize variables.Utilizing the same method and conditions for each trial to ensure that the measurement of strength is comparable across brands.The reproducibility of the results when the experiment is repeated under the same conditions, meaning other classes or students could perform the same experiment and get similar results.The collection of a large enough sample size to analyze the data and reduce the effect of anomalies.Considering the information provided, we can assume the experiment was valid if these factors were followed. If all students reported Bounty as the strongest, and if the experiment was conducted under standardized and replicable conditions, this indicates a high likelihood of validity in the findings.
Furthermore, the experiments with the populations of beads, DNA amounts from fruits, airflow tests, and the force standards involving rubber bands also emphasize the importance of controlled conditions, replication, and accurate measurement to establish validity in experimental results. The phrase, 'Which experiment had the correct results? They both did. The job of the statistician is to see through the variability and draw appropriate conclusions'', suggests that multiple consistent outcomes lead to valid conclusions in scientific inquiry.
How are peptide bonds formed between amino acids in the elongation process of the translation of mRNA?
In translation elongation, peptide bonds are formed between amino acids via the catalytic action of peptidyl transferase. This ribozyme facilitates bond formation between the amino group of the amino acid on the A-site tRNA and the carboxyl group of the amino acid on the P-site tRNA, using GTP for energy. The tRNA carrying the growing peptide moves from the A-site to the P-site, while the empty tRNA exits through the E-site.
The elongation process of the translation of mRNA is a critical phase in protein synthesis, during which peptide bonds are formed between amino acids. As tRNAs bring individual amino acids to the ribosome, the ribosome's movement from the A to the P to the E site is facilitated by conformational changes that move the ribosome along the mRNA strand.
The high-energy bond of each charge aminoacyl-tRNA is used when forming the peptide bond catalyzed by an RNA-based enzyme known as peptidyl transferase. This enzyme is a component of the 50S ribosomal subunit.
The process begins with the formation of a bond between the amino group of the amino acid on the A-site tRNA and the carboxyl group of the amino acid on the P-site tRNA. Via GTP hydrolysis, energy is provided to both the binding of the new aminoacyl-tRNA to the A-site and its subsequent translocation to the P-site following peptide bond formation.
After a peptide bond is formed, the tRNA that now carries the growing peptide chain moves from the A-site to the P-site. Concurrently, the P-site tRNA, which is now empty, moves to the E-site where it is then expelled, allowing the cycle to repeat and the polypeptide chain to elongate.
For which reasons do the data support the classification of viruses are non living
A.) Viruses contain genetic information
B.) Viruses evolve over time
C.) Viruses reproduce inside host cells
D.) Viruses do not take in nutrients
C. I believe this is the answer based of the chart that you gave
Viruses do not take in nutrients this support the classification of viruses as non-living.
What is virus?A virus is a non-cellular, infectious entity with a microscopic structure that can live by relying on the host cell. It cannot be categorized as a living creature or a non-living material because of its parasitic nature and the traits of both living organisms and non-living substances.
The virus cannot replicate outside the host cell because it lacks the necessary cellular components. To survive, it enters the host body and attaches to a specific cell, injects genetic material, reproduces using host genetic material, and then splits the host cell, releasing new viruses.
Why viruses are considered non-living?Viruses likewise lack the characteristics of living organisms:
They do not have an energy metabolism, do not develop, do not generate waste, and do not respond to stimuli. They can't multiply on their own, thus they have to infiltrate live cells to reproduce.Thus, we can conclude that option D is correct.
You can learn more about viruses here:
https://brainly.com/question/25236237
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