Answer:
A scientific theory is an explanation of an aspect of the natural world that can be repeatedly tested and verified in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of results. Where possible, theories are tested under controlled conditions in an experiment.
Explanation:
What does metabolic rate mean?
Cancer cells in humans can develop when..?
Cancer cells have gene mutations that turn the cell from a normal cell into a cancer cell. These gene mutations may be inherited, develop over time as we get older and genes wear out, or develop if we are around something that damages our genes, like cigarette smoke, alcohol or ultraviolet (UV) radiation from the sun.
How are the ripples that are moving
through the water in this pond similar to selsmic
waves that travel through Earth? How are they
different
Final answer:
Ripples in a pond and seismic waves both exhibit wave properties such as carrying energy and having transverse and longitudinal properties, but they differ in their mediums and in what they can reveal about the medium's structure. Seismic waves travel through solids and are used to study the Earth's interior, whereas water waves are restricted to the surface. Both types of waves can experience superposition, where they pass through each other without altering their individual properties.
Explanation:
The ripples moving through the water in a pond are similar to seismic waves traveling through the Earth in that both are forms of wave motion that carry energy away from a source through a medium. With water waves, the disturbance is in the surface of the water, while seismic waves involve disturbances in the Earth's crust and mantle. Water waves cause water molecules to move in a clockwise circular motion due to their transverse and longitudinal properties. Seismic waves also exhibit transverse and longitudinal movements but in solids, with different types of seismic waves (P-waves and S-waves) showing different motions.
However, there are important differences too. Seismic waves can travel through the solid Earth and are used to probe its internal structure. In contrast, water waves are primarily confined to the surface of the liquid and reveal less about the water's depth. Furthermore, when it comes to interference, water waves and seismic waves can exhibit superposition, where they pass through each other without being altered. This characteristic is shared with other wave types, including sound and light waves. Lastly, multiple ripples in a pond are formed from a single disturbance due to the interaction of reflected waves coming from the edge of the pond, while seismic waves typically propagate as expanding waves from an earthquake's epicenter with little to reflect from.
how do goblet cells protect gas exchange from pathogens
How does exercise affect the rate of cellular respiration? CER
Exercise increases the rate of cellular respiration, which is needed to meet the heightened energy demand by producing more ATP. Endurance and resistance training lead to different cellular adaptations to improve performance. Cellular respiration becomes more efficient with regular training, enhancing energy production.
Explanation:Exercise affects the rate of cellular respiration by increasing the demand for ATP, which in turn requires a rise in the production of energy via cellular respiration. Aerobic respiration is significantly more efficient than glycolysis, as it produces approximately 36 ATP molecules per glucose molecule compared to four ATPs from glycolysis. Nevertheless, aerobic respiration needs a continuous supply of oxygen, which is facilitated by increased breathing and heart rates during exercise, enhancing O₂ delivery to muscles.
Endurance training leads to cellular adaptations, such as an increase in mitochondrial density, which enhances aerobic respiration efficiency and oxygen utilization. In contrast, resistance training causes muscular adaptations primarily related to muscle strength and size. After intense muscle activity, the body must repay the oxygen debt incurred, which necessitates increased oxygen intake post-exercise to replenish ATP, convert lactic acid back to pyruvic acid, and restore muscle energy reserves.
Thus, when we exercise, our cells respond by ramping up the cellular respiration process to meet increased energy demands. This is why an athlete's body becomes more efficient at using oxygen and generating ATP over time with regular training.
List the inputs and outputs of photosynthesis. What part(s) of the plant are responsible for taking in each of the inputs?
Answer:
List the inputs and outputs of photosynthesis. What part(s) of the plant are responsible for taking in each of the inputs?
6CO2 + 6H2O ------> C6H12O6 + 6O2
inputs outputs
6CO2= Carbondioxide(6 molecules of carbon and 12 molecules of oxygen)
6H2O= Water (12 molecules of hydrogen and 6 molecules of oxygen)
C6H1206= Glucose (6 molecules of carbon, 12 molecules of hydrogen and 6 molecules of oxygen)
6O2= Oxygen (12 molecules of oxygen)
The plant(s) part responsible for photosynthesis is the leaf because it contains the chloroplast that houses the chlorophyl which enable it to tap sunlight for photosynthesis to take place
Explanation:
Photosynthesis is a cellular metabolic process, regulated by enzymes, its inputs and outputs are the following:
Its inputs are: carbon dioxide and water from which organic compounds are synthesized, using the light absorbed by pigments as an energy source.In plants the fixation and reduction of carbon dioxide takes place in the stroma of the chloroplast.The xylem carries water from the roots, spreading through the stem and out of the veins of the leaves.Light energy is absorbed by chlorophylls and carotenoids and is stored at the end of the photosynthetic process as chemical energy.CO2, water and light energy are used to make the outputs: sugar and oxygen.Plants use the sugars produced in photosynthesis as a food source that is energy for the plant.Therefore, we can conclude that photosynthesis captures the light energy of the Sun and uses it to bind CO2 and form sugars.
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how can you support the statement that all on earth is dependent on plants
NEED ASAP WILL MARK BRAINLEST
What does lead exposure cause in children?
diarrhea
cancer
developmental delays
increased appetite
Answer:
Development delays
Explanation:
Cuz it effect the brain the most
2. Which labeled structures represent a homologous
pair?
A. 1 and 2
B. 3 and 4
C. 3 and 6
D. 7 and 8
Answer:
Diagram is needed please
Explanation:
diagram
The structure in the diagram that would normally represent homologous pairs of chromosomes is 1, only.
Structure 1: This represents a diploid cell, which means it has two sets of chromosomes. Each set contains one chromosome inherited from each parent. These chromosomes are homologous, meaning they have the same genes but may have different alleles (versions of the genes).
Structure 2: This represents a haploid cell, which means it has only one set of chromosomes. These cells are typically gametes, such as sperm or egg cells. Homologous pairs are not present in haploid cells.
Structure 3: This represents a mitotic cell, which is in the process of dividing to produce two daughter cells. During mitosis, the chromosomes replicate and then separate, so each daughter cell will receive one copy of each chromosome. Although the daughter cells will have homologous chromosomes, they are not shown paired in this diagram.
Therefore, the only structure that normally represents homologous pairs of chromosomes is structure 1, the diploid cell
complete question is attached
Choose three different chains of energy conversions that you use at home or at school to accomplish tasks in your daily activities.
Answer:
There are different energy conversions which we encounter in day to day life. Some of them are:
1) We use chemical energy in the food to convert it into mechanical and kinetic energy which we need for walking to the school.
2) We use chemical energy to be transferred into electrical energy which is converted to light energy in our bulbs so that we can see.
3) We convert electrical energy in the toaster to thermal energy to make breakfast.
Need the Answer ASAP
Sexual reproduction produces genetically different offsprings which do possess variations, hence better chance to survive in the environment.
Option C
Explanation:Sexual reproduction is the process of reproduction where there's a fusion of gametes from a male and female of the same species, resulting in a zygote and eventually an offspring. Sexual reproduction is very advanced type of reproduction which is very expensive for an organism. Much of the energy of the organism is spent to produce gametes and other necessary processes for reproduction.
Gametes of the sexual reproduction is produced mainly by means of meiotic cell division. This involves crossing over and chaismata formation which helps in genetic variations in the offspring. These variations help the species to survive unknown changes in environment, and helps to adapt quickly lessening the chances of extinction. So sexual reproduction has modified various times in different groups of species.
PLEASEEE HELPPPP !!!!!
Just put in order pleaseeee
The correct order is 2, 1, 5, 3 and 4.
Explanation:As per Dalton’s theory, atoms were described as the indivisible and indestructible parts of matter which forms any object. But this theory was discarded.
Then came J J Thompson’s Plum Pudding model which described atoms as a mixture of positive and negative charges just like a pudding. But it was also discarded.
Then comes Rutherford's solar system model which described Atoms as mostly empty spaces where the nucleus resembles Sun with positive charge and electrons as planets revolving the sun.
The came Bohr’s theory which described the shells of Rutherford as specific energy levels, not just mere orbits. This led to explain flame colorings of many elements.
Then came Hizenberg's uncertainty principle and Schrodinger’s model of atom which basically described the quantam theory of atoms.
What is a person's perception and expression of individual qualities and group
membership called?
Answer: Identity
Explanation:
Answer: identity
Explanation:
a p e x
How many fingers did T. Rex have?
Answer:
Rex is not a Tyrannosaurus rex because each of his hands has three fingers. Tyrannosaurus had only two fingers on each hand.
Answer:
two fingers on one hand and two on the other
what event happens underwater to cause a tsunami?
Answer:
An Earthquake
Explanation:
Answer:
There are two events that occur underwater to cause a tsunami. The first occurs when there is a landslide on the coast and the water is pushed by the force causing a tsunami. The second is when there occurs a landslide right under the water causing the water to push due to the natural forces generated by the landslide
Explanation:
Compare homologous and analogous structures
Answer:
Homologous structures can be described as the structures which are similar to one another present in different organisms. These similarities depict that the organisms might have a common ancestor i the past. For example, the forelimb of man, birds, dogs.
Analogous structures can be described as structures in different organisms which perform the same function but might not have a common origin. For example, the wings of bats and birds.
How did modern dogs evolve? Who are their ancestors
Answer:
modern dogs evovled from grey wolves to modern dogs
Explanation:
Water is a product of cellular respiration. Which term best describes water in
photosynthesis?
O
A. Enzyme
O
B. Waste
O
C. Reactant
O
D. Product
Answer:
reactant
Explanation: water provides hydrogen during photosyn thesis for glucose
Which clue would tell if the lac operon is on?
The repressor protein has fallen off the molecule.
Lactose is absent.
RNA polymerase is blocked by the repressor.
The cell membrane changes.
Answer:
RNA polymerase is blocked by the repressor
The lac operon is on when the repressor protein get fallen off the operator.
What is Lac operon?An operon or a group of genes with a single promoter, which encodes genes for the metabolism and transport of lactose in E.coli and other bacteria. In the process, the group of three genes need to be turned on before the bacterium, that is, E.coli can utilize lactose as food.
In the absence of lactose, the lac repressor, that is, the DNA-binding protein combines with the region known as the operator that switches off the lac operon. When binding of lactose takes place with the repressor, it makes the repressor to fall off the operator, hence, turning the operon on.
Thus, when the repressor protein gets fall off the molecule, it shows that the lac operon is turned on.
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Which of these statements best describes Landon and Emily?
Answer:
Landon and and Emily are eukaryotic products of sexual reproduction.
Explanation:
The reproduction in which the male and female gametes fuse to form genetically different organisms is syngenesis.
Landon and Emily are the eukaryotic products of syngenesis.
Syngenesis can be explained as:
The syngenesis occurs in the organisms differentiated into male and female. The gametes of the male and female fuse to form the offspring containing information from mother and father.
The syngenesis increases genetic diversity, species or organisms adapt to the environmental conditions, and diseases are less likely to affect the population.
Thus, the correct answer is Option D.
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Please help!!
Segregation and independent assortment of genetic material occurs during: mitosis
meiosis
fertilization
Answer:
meiosis
Explanation:
When cells divide during meiosis, homologous chromosomes are randomly distributed during anaphase I, separating and segregating independently of each other. This is called independent assortment.
Final answer:
Segregation and independent assortment take place during meiosis, causing homologous chromosomes to separate and ensuring genetic diversity in gametes. These processes are fundamental to Mendelian genetics and biological inheritance. Mitosis does not involve segregation of alleles but produces identical daughter cells.
Explanation:
Segregation and independent assortment of genetic material occurs during meiosis. Segregation refers to the separation of homologous chromosomes to different cells during meiosis, ensuring that gametes receive only one allele of each gene. This reflects the law of segregation by Mendelian genetics. Recombination also occurs through mating, which results in new combinations of genes.
Independent assortment takes place specifically during the anaphase-I stage of meiosis I. This is where chromosomes inherited from both the maternal and paternal side are sorted into gametes in a random manner, leading to genetic diversity. Equal segregation of alleles into daughter cells occurs only in meiosis; mitosis produces genetically identical daughter cells without allele segregation.
Genetic variation is heightened during meiosis I through crossover events, and further completion of meiosis II creates four unique haploid cells. These processes contribute to the genetic diversity seen in sexually reproducing organisms and are critical in understanding genetic inheritance and genetic disorders.
Which organism shown will get most of the available energy that is in the seeds?
Group of answer choices
A the mouse
B they will all get the same amount of energy from the seeds
C the snake
D the hawk
Answer:
Mouse
Explanation:
If you follow the Rule of 10%, the mouse gains the most energy from the seeds. The snake and the hawk only get 10% of that energy the mouse has consumes.
For example, follow the rule of 10% pyramid.
Producers: 1,000,000 kcal (energy)
Primary Consumers: 100,000 kcal
Secondary Consumers: 10,000 kcal
Tertiary Consumers: 1,000 kcal
In this sense, the seeds are the producers, the mouse is the primary consumer, the snake is the secondary consumer, and the hawk is the tertiary consumer.
Explain one mechanism that eukaryotic organisms is to regulate genes.
Epigenetic regulation mechanism and Repressors and transcriptional activators allows eukaryotic organisms is to regulate genes.
Explanation:
The gene expression regulation process in eukaryotic cell is complicated than when compared to the gene expression regulation process. In the organisms like multicellular, the regulation of gene expression obtained by the proteins. The regulation of genes in this type of organisms doe not take single level of execution.
Before the transcription stage begins, the DNA access is initially regulated. This process of regulation is termed as epigenetic regulation. There are 20,000 genes that are encoded by the genomes in human beings. These are arranged in such a way that they will be used by the particular type of cells when there is any need.
what do the most abundant elements in earth’s atmosphere have in common
The most abundant elements in the earth's atmosphere are; nitrogen, oxygen and argon. What they have in common is that they are all gases.
Nitrogen is the most abundant element in the atmosphere. It constitutes about 78% of air.
The next most abundant element in the atmosphere is oxygen. Oxygen accounts for about 21% of air.
The third most abundant element in the atmosphere is argon and it accounts for 0.9% of air.
All the elements listed here are gases at room temperature.
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Of the three kinds of substances that make up matter in nature which one forms most minerals
Answer:
Of the three kinds of substances that make up matter in nature which one forms most minerals? Most minerals are chemical compounds.
Explanation:
Final answer:
Silicates, composed of silicon and oxygen, are the most abundant class of minerals in the Earth's crust, forming around 90% of it and contributing to the diversity of rocks.
Explanation:
Of the three kinds of substances that make up matter in nature, silicates form most of the minerals found in the Earth's crust. Silicates, a large and complex class of minerals, are composed of silicon and oxygen, with the most common type being the silicate mineral with a base structure of (SiO₄)⁴⁻. Silicate minerals, such as quartz and feldspar, constitute approximately 90% of the Earth's crust due to the abundance of silicon and oxygen. These minerals are not only significant in quantity but essential for creating a diverse range of rocks and subsequently the landscape of our planet.
A population of rabbits has individuals with fur coloring that ranges from white to brown. The population lives in a temperate
deciduous forest where the summers are mild and average about 50°F. The winters are often below freezing.
If warmer temperatures last longer into the fall and the average temperature in the winter is getting warmer, what do you expect to
happen to the population?
The correct answer is B. The percentage of the population with white fur will decrease
Explanation:
In the case presented, the fur of rabbits is related to an adaptation to survive during different seasons. In this way, the white fur is needed during winters as this helps rabbits to camouflage in an environment of snow providing them with a survival and reproduction advantage. On the other hand, the brown fur is better during summer as they need to camouflage between the brown trees, grass, and plants.
According to this, if temperature increases and therefore snow decreases the rabbits with brown fur will prevail as this will make them more likely to survive and reproduce, for example, a rabbit with white fur would be easily found by predators if there is no snow. Thus, in this case, "the percentage of the population with white fur will decrease".
Adaptation is the process in which an organism adjusts itself to survive in its surrounding. Adaptation can be affected by climate, rainfall, predators, and temperature.
The population of rabbits will be:
Option B: The percentage population with white fur will decrease.
In the given case, the fur of rabbits ranges from brown to white. The changes in the fur colour are due to the adaptability of rabbits to the given environment.
In winters, white fur is by rabbits because it will help in camouflaging in a snowy environment, which will provide them high chances of survival and reproduction advantage.
Conversely, the brown fur will be better suited in the summer as they will be easily camouflaged in brown trees, soils, and plants.
The rise in temperature will cause a decrease in the rabbits with white fur. The brown fur rabbits will have more tendency to survive and reproduce in summers.
Thus, the population of brown fur will increase in high temperatures and rabbits with white fur will decrease.
Therefore, option B is correct.
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Which of the following is NOT a way that biodiversity is important to an ecosystem?
Question 6 options:
Biodiversity can increase the rate of extinction.
Different types of decomposers are available to break down many types of waste.
If one food source goes extinct other food sources are more likely to be available.
Biodiversity makes ecosystems more stable.
Answer:
Biodiverisity can increase the rate of extinction
Explanation:i did the quiz my self thats teh answer for this question
A group of scientists have been studying a population of sea stars over 100 years. In year 1900 a scientist measured the arm length (cm) of 11 sea starts. Then in year 1950 another scientist measured the arm length(cm) of 11 new sea stars. Then in year 2000 another scientist measured the arm length(cm) of 11 new sea stars. You have access to their work and will be assisting the scientists by charting their findings and answering questions about the data they have collected.
Fill in frequency table: The Data Table gives the arm lengths(cm) for a sample of sea stars in a given year. Using the arm length(cm) from the Data Table, count the number of sea stars that fall in each size range. The first three numbers in year 1900 have been filled in for you.
Answer:
Size range(cm) Year 1900 Year 1950 Year 2000
51 - 60 1 0 0
61 - 70 1 1 0
71 - 80 2 2 2
81 - 90 2 5 7
91 - 100 2 3 2
101 - 110 3 0 0
Explanation:
Your data table is actually color-coded, so all you needed to do was count. Looking at your frequency table, you can see that a color corresponds to certain colors.
For example 51 - 60c, corresponds to the light green. Looking at the data table, you see 1 light green block in the column of 1900. As it happens, it also is the only measurement that falls within the range 51 - 60 so you have 1 sea star. In the Year 1950, there is none, and you won't find one in Year 2000, so both frequency count is 0.
Scientific knowledge is both long lasting and always _______.
A:changing
B: non-observable
C:permanent
D:untestable
Answer:
A. changing
Have a magnifecent day!
Scientific knowledge is both long-lasting and always subject to change. This evolution is inherent to the scientific method which emphasizes constant testing, refinement, and modification of ideas based on new evidence or data.
Explanation:The correct option is A: changing. While scientific knowledge can remain unchanged for a long time, it is always subject to change as new evidence or data emerges. Science is a dynamic and evolving field; scientists constantly test theories and hypotheses and refine them as needed. This is a cardinal characteristic of the scientific method: ideas must be testable and, as a result, potentially changeable. Hence, scientific knowledge is both long-lasting and always changing.
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what is the path of H+ions through the thylakoids
Answer and Explanation:
Hydrogen ions in the thylakoid space form an electrochemical gradient because of the difference in the concentration of protons (H+) and the difference in the charge across the membrane that they create. This potential energy is stored as chemical energy in ATP through chemiosmosis. The hydrogen ions are allowed to pass through the thylakoid membrane through an embedded protein complex called ATP synthase. Energy from the electron fuels membrane pumps that actively move hydrogen ions against their concentration gradient from the stroma into the thylakoid space. The photon causes an electron in the chlorophyll to become excited.