Answer:
36 thymine
Explanation:
DNA is a polynucleotide having double helical structure. The Each helix of DNA is made of nucleotides. Each nucleotide has a pentose sugar, phosphate and a nitrogenous base. Both the helices are joined by corresponding bases through hydrogen bond. The base pairing in the DNA double helix is specific. The purine adenine (A) always pairs with the pyrimidine thymine (T) the purine guanine (G) always pairs with the pyrimidine cytosine (C). Therefore, the number of adenine is 36 then the number of thymine will be 36. Similarly if the number of cytosine is given 24, then the number of guanine will be required 24 not 36.
Which of the following accurately describes the correct order of events in the process of transpiration within a plant? A. Water enters the roots, passes through the leaves, and leaks through the stem pores. B. Water enters the roots, gets transported through the stem, and evaporates through the leaves. C. Water is absorbed through the leaves, is transported through the stem, and nourishes the roots. D. Water is absorbed through the leaves, nourishes the roots, and leaks through the stem pores.
Answer:
B. Water enters the roots, gets transported through the stem, and evaporates through the leaves.
Explanation:
Transpiration is a process through which nearly 99% of water of the plant is lost into the environment. The process of transpiration serves as the defense mechanism in a plant body which protects the plants from heat radiations of sun and produces cooling effect. Water is initially absorbed by the plant with the help of its roots. This water then moves against gravity in the upward direction due to transpiration pull through xylem tissue of stems. Water moves upward and reaches various parts of the plant including leafs. From leafs this water evaporates into the atmosphere. The sun rays falling on the leafs are utilized in evaporating this water rather than damaging the plant. So, transpiration is a type of defense mechanism in plants.
Apart from this transpiration also helps in gaseous exchange and flow of minerals within a plant body.
Final answer:
The correct sequence of events in plant transpiration starts with water uptake by root hairs, transportation through the stem, and eventual evaporation through the leaves' stomata.
Explanation:
The process of transpiration in plants involves several steps. Firstly, water enters the plant through root hairs, which are fine protrusions off the roots and provide a large surface area to absorb water and nutrients from the soil. Then, the water is transported upwards through the plant's stem via the xylem, a type of tissue designed for water transport. Finally, the water evaporates through the leaves, specifically from pores known as stomata. This evaporative process creates a negative pressure that assists in drawing more water up from the roots.
Given these steps, the correct order of events in the process of transpiration within a plant is described by Option B: Water enters the roots, gets transported through the stem, and evaporates through the leaves.
Which plates form a boundary with the African Plate? Check all that apply.
Pacific
Antarctic
Eurasian
Philippine
South American
Answer:
C, B, E
Explanation:
The fossil record of horses shows that over millions of years, horses have
A. lived in areas that aren't conducive to creating fossils, leaving very little fossil evidence behind.
B. become larger, developed hooves in place of toes, and have adapted to eat grass instead of leaves.
C. remained remarkably unchanged.
D. become much smaller and slower moving
The fossil record of horses shows that over millions of years, horses have become larger, developed hooves in place of toes, and have adapted to eat grass instead of leaves.
Further ExplanationThe fossil record of horses was found in sedimentary strata since the beginning of tertiary period in a life span known as Eocene. That is about 50 million years ago.
According to evolution theory, it is very possible to follow horse evolution through millions of years: how the horse became larger and stronger, lost most of its toes, and how the structure of its tooth changed when its moved from eating plant, trees and shrubs to feeding on high dry grass. The horse evolution is believed to been fueled by drying and cooling climate.
The first set of horses lived in humid forest; it is a forest that is full of plant rich in foliage. Their toes, with three at the rear and four at the front spread out at different angle, and this really helped them from drowning into marshy grounds. Plants rich in foliage disappears as climate became drier and new huge grass fields formed. As a result of dried land, the grazers become better runner and were able to escape predators.
All the horses are categorized as the same family (Equidae) because they all resemble each other and due to the striking similarities, it can be hard to recognize any differences through the study of fossils skeleton alone.
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What must scientists look for in their experiment or their data to make sure it is accurate?
Answer:
To make sure that the experiment is accurate, the scientist must make carry out an appropriate observation, which would lead to the formation of good hypothesis. Good experimental method is an other criteria to look forward for the accurate experimental results. Methods are applied in collection of data and other things and in compiling results using statistical methods to carry out an accurate experiment.
The water is heated until it boils
The temperature remains constant at boiling point
Explain the effect on the internal energy of the water and the movement of water molecules
Answer:
Its kinetic energy increases
Explanation:
Its molecules move very faster and some atoms go through ionization because the collision of the atoms because their increase in movement speed and intensity. Ionization is the loss or gain of electrons, which are around the nucleus of atoms. Since equals charges repeal and electrons have negative charges, they move from their levels of energy during collisions. Its conductivity can also become lower, because the flow of electrons can be interrupted by the violent movement of the molecules.
Question 19 (5 points)
In the gaseous state _form diatomic covalent molecules.
noble gases
alkali metals
alkaline earth metals
halogens
Answer:
halogens
Explanation:
"HALOGENS"
table consisting of five chemically related elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).
when you exhale, air in your lungs move from the __
Answer:
D? HOPE I'M RIGHT LOLZ
Explanation:
Answer:
A
Explanation:
Not positive but i think
Check all that apply
Diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die?
1.The shells make up the diatomaceous earth used in filters
2.It can be used as an ingredient in abrasives
3.They are used in food products
4.The shells can be used in some insulating materials
Answer:
1.The shells make up the diatomaceous earth used in filters
2.It can be used as an ingredient in abrasives
Explanation:
Pinularia, Navicula, Fargilaria are some of the diatoms. These are included in the family Bacillariophyceae. They are unicellular, eukaryotic aquatic both freshwater and marine organisms having extremely beautiful silica shells or frustules. The diatoms are autotrophic and are a good source of food for marine organisms. Diatoms have very wide fossil record as some rocks are formed of fossil diatoms. They are called diatomite or diatomaceous earth. The deposits of diatoms are mined commercially as abrasives. It is used in filters to remove unwanted material from drinking water.
The silica shells of diatoms are used in diatomaceous earth for filtration, as abrasives in cleaning products, and in insulating materials. Food grade diatomaceous earth is also available. The correct options are 1, 2 and 4.
The silica shells of diatoms have several uses after the diatoms die. Firstly, the shells make up diatomaceous earth which is used as a filtering agent in products like swimming pool filters and in beer brewing. Secondly, due to their abrasive properties, diatomaceous earth is utilized as an ingredient in abrasives such as toothpaste and household cleaners. Finally, because of the insulative properties of silica, diatom shells can be incorporated into certain insulating materials. While not as widespread, there are also "food grade" diatomaceous earth products that are marketed with purported health benefits.
Marcie enjoyed a late night out, eating and drinking, with friends. When she got home and took her shoes off; she noticed her ankles were swollen. What can you conclude is the reason for this?
A) She consumed high fat foods that lead to increased swelling.
B) She consumed high sodium foods that lead to an electrolyte imbalance.
C) She consumed sugary foods that lead to the pancreas secreting insulin.
D) She consumed so much liquid that the kidneys were unable to rid the body of the excess.
Answer:
Option D
Explanation:
The medical term used for defining a situation in which ankles and legs swell is called as edema
This swelling is primarily due to the fluid accumulation. Generally during the normal conditions, accumulated water is pumped back by lymphatics to the circulatory system but in abnormal condition, excess fluid seeps out of blood vessels and feet ankles etc swell.
Hence, otpion d is correct
Which terms best describe the role played by each organism in an ecosystem?
A species of prairie dog only eats grasses and seeds in its ecosystem. It burrows in the grassland, which aerates the soil and leads to a greater
diversity of grasses. It is also a source of food for coyotes. The prairie dog is a(Keystone herbivore, herbivore, Keystone prey)
and the coyote is a(Predator, Keystone predator, Competitor)
Plzzz answers
Answer:
- Keystone herbivore
- Predator
Explanation:
The prairie dog is a herbivore, as it feeds upon plants and their products. But that is not its only role. The prairie dog also helps in the aeration of the soil, which is excellent for the grasses. It fertilizes the soil, and it spreads out the seeds, which contributes to much denser and healthier vegetation in the prairie. It is also a prey, namely of the coyote. So all in all, the prairie dog is a keystone herbivore, as it is a species on which the ecosystem heavily relies on. The coyote's role in the ecosystem is much simpler, it is a predator, thus it has a role of regulating the population of the herbivores, such as the prairie dog.
The terms that best describe the role played by each organism in an ecosystem is D. The prairie dog is best described as a keystone herbivore , and the coyote is best described as a predator.
The prairie dog in this ecosystem is an herbivore, as it primarily consumes grasses and seeds. However, since its burrowing activity significantly enhances the grassland by aerating the soil and increasing plant diversity, it can also be considered a keystone herbivore. This term highlights its important role in the ecosystem beyond just being an herbivore.The coyote that preys on prairie dogs would be best described as a predator. Coyotes rely on prairie dogs and other animals as their food source, fitting the definition of a predator in this context.we want most cells to be even in and out which is called
The state where the concentration of solutes outside and inside the cells is the same is called Isotonic. This isotonic state is vital for maintaining the normal function and shape of cells, aiding in nutrient and waste exchange, and contributing to homeostasis.
Explanation:The state where most cells have an equal distribution of particles, i.e, concentration of solutes outside the cell (in the extracellular fluid) is equal to the concentration of solites inside the cell (in the cytoplasm), is called Isotonic. This isotonic state helps maintain the normal shape and function of cells, aiding in the exchanging of nutrients and wastes at the periphery of the cell efficiently. It also helps cells contribute to homeostasis, a dynamic state of balance essential for life.
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What is an ion?
A. A molecule whose name has no subscripts
B.an atom with a positive or negative charge
C. An atom with a different number of neutrons
D.a molecule that does not have any bond
Answer:
The answer is B
(also, this is chemistry not biology)
An ion is an atom or molecule that gains a positive or negative charge by losing or gaining electrons, resulting in an unequal number of protons and electrons. Cations are positive ions, while anions are negative ions.
An ion is defined as an atom or molecule that has acquired a positive or negative charge due to the loss or gain of one or more electrons, resulting in an unequal number of protons and electrons. These charged entities play crucial roles in various chemical reactions and form the essential basis of many phenomena in physics and biology. When an atom loses electrons, it becomes a positively charged cation, and when it gains electrons, it becomes a negatively charged anion. The electric charge of one electron is equal to the charge of one proton, but with an opposite sign.
One difference between photosynthesis and cellular respiration is that
cellular respiration occurs:
A. in mitochondria.
B. in chloroplasts.
c. only during the day.
D. only at night.
the answer is A, in the mitochondria
Answer:
The cellular respiration occurs in A mitochondria.
Which is most likely to be fossilized?
A.
hair
B.
eyes
C.
bones
D.
organs
Answer:
C. Bones
Explanation:
Bones fossilize over time, while hair, eyes, and organs, decay. This is why skeletons have no eyes, hair, and organs. And prehistoric fossils don't either.
How would a biologist classify the plant stem shown
Answer:
There is no picture so I don't know what it's supposed to be showing
Explanation:
What would most likely cause the cycle to continue?
a.An explanation inspires new questions and the process of making new observations.
b. A fact inspires new questions and the process of making new observations.
c.A careful systematic process is used in experiments to gather observations and data.
d.A fact is established and more data is needed to convince scientists that it is true.
the correct answer is A. an explanation inspires new questions and the process of making new observations.
Answer:
a. An explanation inspires new questions and the process of making new observations.
Explanation:
When we are researching a topic, we often begin with a question. However, it is very likely that in the process of researching in order to answer this question, we end up wanting to find out more about the topic. In this way, once we arrive to an explanation, we often have new questions, and we need to go back to the process of making new observations.
Drag each label to the correct location.
Sort the variables of these three studies based on whether they are independent or dependent variables.
Study 1: the effect of light on flowering patterns of plants
Study 2: the effect of penicillin on the growth of E. coli
Study 3: the effect of progesterone on the ovulation of rats
light
flowering patterns
progesterone
penicillin
growth of E. coli
ovulation
Answer:
Study 1:
Independent- Light
Dependent - flowering patterns
Study 2:
Independent- Penicillin
Dependent - Growth of E. Coli
Study 3:
Independent- Progesterone
Dependent - Ovulation
Explanation:
To differentiate independent and dependent variables, just remember that the dependent variable is not changed by the researcher. It changes depending on the independent variable. in short, it is what is being tested on. The independent variable on the other hand, is manipulated by the researcher to elicit a change in the dependent variable.
In the three study scenarios provided, the independent variables 'light', 'penicillin', and 'progesterone' are manipulated to observe the outcomes on the dependent variables 'flowering patterns', 'growth of E. coli', and 'ovulation', respectively.
Understanding the concepts of independent and dependent variables is crucial for analyzing experimental studies. In each given study, the independent variable is the one that is being manipulated or changed by the researchers, while the dependent variable is the one that is being measured or observed to see how it is affected by the changes in the independent variable.
Study Identifications:
Study 1: The independent variable is light, because it's what the researchers alter to observe the effect. The dependent variable is flowering patterns of plants because it's what changes as a result of light exposure.
Study 2: The independent variable is penicillin, and the dependent variable is the growth of E. coli, which is measured to determine the effect of penicillin.
Study 3: The independent variable is progesterone, as this is what's being tested, and the dependent variable is ovulation in rats, as this is what is influenced by the hormone.
When constructing data tables or charts, remember to place the independent variable on the x-axis and the dependent variable on the y-axis. Also, ensure rows and columns are clearly labeled with appropriate units.
We live in the Cenozoic era, and scientists know more about this era and the epochs it's divided into than any other time period. Why is this?
The Cenozoic era is the shortest and most recent era of all, the one that still lasts and we live in. The major reason why the scientists have by far the most knowledge about this era is exactly the fact that it is the most recent. Because it is the most recent era, the rock layers are better preserved, and in much lesser degree destroyed when compared to the previous eras. The fossils records are also much richer, as the fossils need longer periods of time to be destroyed, so there's an abundance of them. The other factor is that there a lot of remains in the most recent part of this era by the humans, which are also a nice representation of what has happened, how it happened, what were the living conditions etc.
an alaskan spruce forest will burn easily once burned the forest regenerates fairly wuickly which statement best describes haw an alaskan spruce forest reacts to fire?
Answer:it is resilient
Answer:
Resilient
Explanation:
In ecology, resilience (or resilience stability) is the ability of a system to restore its balance after it has been disrupted by a disturbance, that is, its resilience. It differs from resistance, which is the ability of a system to maintain its structure and function after a disturbance. The term resistance (or resistance stability) is the ability of a system to maintain its structure and function in the face of a disturbance. For this reason, we can say that resilience best describes how Alaska's spruce forest reacts to fire.
Sperm pass through the ______ and connect to a short ejaculatory duct.
vas deferens
prostrates
seminiferous tubules
none of the above
Answer:
none of the above
Explanation:
Sperm pass through the deferent duct.
Answer:
prostrates. is the answer to this question
Match the enzymes to their role in the DNA replication process
Key enzymes in prokaryotic DNA replication include DNA polymerase III, helicase, DNA gyrase, single-strand binding proteins, and primase. DNA polymerase III synthesizes new DNA strands and proofreads them for errors, while helicase and gyrase unwind and relieve stress on the DNA helix. Primase generates RNA primers to start replication.
During the process of prokaryotic DNA replication, a variety of enzymes work in concert to ensure accurate copying of the genetic material. A fundamental enzyme in this process is DNA polymerase III, which adds nucleotides to build a new strand complementary to the template strand, while also proofreading and correcting any errors made during replication. Another essential enzyme is helicase, which unwinds the DNA double helix at replication forks. DNA gyrase helps relieve the stress caused by the unwinding of DNA. Single-strand binding proteins (SSBs) stabilize the separated DNA strands to prevent them from re-annealing. And finally, primase synthesizes a short RNA primer, which is necessary for DNA polymerase III to commence the replication process.
The replication mechanism also deals with the challenges presented by the antiparallel strands, creating leading and lagging strands. The latter is synthesized discontinuously in the form of Okazaki fragments, which are later joined together to form a continuous strand.
Note that while the discussion here focuses on prokaryotic DNA replication, similar but not identical enzymes play roles in eukaryotic DNA replication, and the overall processes are conserved across life forms.
Which of the following is NOT considered an appendage of the skin?
nails
glands
follicles
none of the above
The appendages of the skin may include hair follicles, nails, sebaceous and sweat glands, arrector pilli, etc. Thus, the correct answer to this question is none of the above.
What do you mean by Appendages of the skin?The appendages of the skin may be defined as the structures that assist in controlling activities like sensation, lubrication, heat loss, contractility, etc.
All the above-mentioned appendages of the skin maintain thermoregulation, perspiration, homeostasis, excretion, sensory reception, etc. These appendages play specific roles in a definite manner.
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14. Which process is occurring in this photograph of a glacier?
O A. Calving
OB. Melting
OC. Abrasion
D. Plucking
the process that is occurring in the photograph is glacial calving. this is because calving is breaking of ice chunks from the edge of a glacier.
SO, your answer is A. Calving
The process is occurring in this photograph of a glacier A. Calving. Therefore,A. Calving is correct.
The process occurring in the photograph of the glacier is calving.
Calving is the process by which chunks of ice break off the front of a glacier and fall into the ocean or a lake.
It is a normal part of a glacier's life cycle, but it is happening more frequently and rapidly due to climate change.
In the photograph, we can see a large chunk of ice breaking off the front of the glacier and falling into the ocean.
The glacier is also surrounded by icebergs, which are formed from calving events.
The other options are not as likely. Melting is a process in which ice changes from a solid to a liquid state.
Abrasion is a process in which rocks and other hard materials are worn away by friction.
Plucking is a process in which rocks and other materials are frozen to the bottom of a glacier and then pulled away as the glacier moves.
This process has several key features and significance:
Mechanisms of Calving: Calving can occur through various mechanisms, including ice fracturing, crevassing, and the separation of large icebergs.
Formation of Icebergs: When icebergs calve from glaciers or ice shelves, they create massive floating ice structures in the ocean.
These icebergs can vary in size, from relatively small pieces to colossal chunks, some of which can be many kilometers in length.
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Which of these layers will the water move easily? Check all that apply. A.rock B.soil C.clay granite D.organic E.layer
Answer:
a rock cause it moves easy in water
Answer:
Option A, B and D
Explanation:
Water will move easily through layers which have large inter particle voids that allow water to permeate through them easily. Hence, a rocky layer, soil, and organic matter will allow water to move easily.
Rocky layer has enough pores in them that allows water to pass through them vertically. While both soil and organic layer allow water movement in both horizontal and vertical direction.
A clay layer is not good for water percolation as clay absorbs water and doesn't allow it to pass.
Hence, option A, B and D is correct
Select the correct answer.
Figure 1 shows a seaside cliff. Figure 2 shows the same cliff after a period of time has passed. What caused the change from figure 1 to figure 2?
A.
rainfall only
B.
ocean waves only
C.
wind
D.
rainfall and ocean waves
Answer:
D. Rainfall and Ocean Waves
Explanation:
Rainfall and Ocean Waves can weather the cliffs, making them appear different.
The correct answer is D) rainfall and ocean waves.
What caused the change from figure 1 to figure 2 is rainfall and ocean waves.
Both rainfall and ocean waves produced the erosion of the rocks. Through time, the force of the water and the force of the wind produce erosion. Water, ice, and wind are the forces of nature that produced erosion. In this case, ocean waves produce erosion throughout many years. That is how mountains get their particular formations.
How are organisms in the domains Bacteria and archaea similar
A- They contain protists
B- They contain nuclei
C- They are multicellular
D- They prokaryotes
Answer:
The correct option is D. Both bacteria and archaea are prokaryotes.
Explanation:
Prokaryotes are organisms made up of a single cell and do not possess any of the organelles which are bounded by a membrane. Prokaryotes can be classified into two categories: archaea and bacteria. Hence, option D is correct.
Other options are false because
Option A: Bacteria and archaea are not protists.
Option B: They do not contain a nucleus and their genetic material is present in the form of the nucleoid.
Option C: They are not multicellular.
Answer:
Theyre prokaryotes (and are also unicellular)
Explanation:
Wut is the equation for phototsythesis
carbon dioxide + water —> glucose + oxygen + water.
6CO2 + 6H2O —> C6H12O6 + 6O2.
A patient is in need of hydration. Which type of solution are the patient's cells most likely in?
Answer:
Hypertonic
Explanation:
Hypertonic solutions have a greater concentration than the cell within it.
Which type of mutation cannot occur in a child after birth?
Answer:
Somatic Mutation
Answer:
Somatic mutation.
Explanation:
he solubility of a sample will ____________ when the size of the sample increases.
Answer:
I believe it will "Stay the same."
Explanation:
Hope my answer has helped you!