Answer:
One of these is natural selection, which is a process that increases the frequency of advantageous gene variants, called alleles, in a population. Natural selection can result in organisms that are more likely to survive and reproduce and may eventually lead to speciation.
Explanation:
what % of the brain is made up of water?
Answer:
about 73%
Explanation:
Answer:
About 75% of the brain is made of water.
What occurs during glycolysis?
Answer:
Glycolysis is the process in which one glucose molecule is broken down to form two molecules of pyruvic acid science my fav class btw thats how i know it
Explanation:
Explain what other steps need to be taken to demonstrate that each of these factors is needed for photosynthesis.
light
Which kind of rock would most likely form from the process shown in the picture? HELPPP !!
Answer:
B
Explanation:
Answer: B
you were correct :) it's sedimentary
sedimentary rocks are created by erosion, weathering, dissolution, precipitation, and lithification
Diffusion is the movement _____.
of molecules to an area of lower concentration
of molecules through the cytoplasm of a cell
of water through a selectively permeable membrane
of molecules to an area of higher concentration
Answer:
of molecules to an area of lower concentration
how many codons specify 5 amino acids?
Answer:
20, Im not completely sure tho
Explanation:
A student crested a model to show the flow of energy in a terrestrial ecosystem.
Which of the following correctly describes the way energy enters and leaves the ecosystem?
A Energy enters the ecosystem as sunlight, which is used by plants to produce sugars Energy leaves the ecosystem as heat from plants, herbivores, carnivores, and decomposers
B Energy enters the ecosystem from decomposers and is used by plants to produce sugars Energy leaves the ecosystem during cellular respiration
C Energy enters the ecosystem when it is transferred from the herbivores to the plants. Energy leaves the ecosystem as heat from plants, herbivores, carnivores and decomposers
D Energy enters the ecosystem as sunlight, which is used by plants to produce sugars. Energy leaves the ecosystem as mineral nutrients
The flow of energy in the terrestrial ecosystem is initiated by the sun and its flows to plants and then animal life and finally reaches the decomposers. Thus the option A is correct.
What is an ecosystem?An ecosystem is an ecological unit and its function is to balance the flow of energy in the environment. The flow of energy is unidirectional and as energy flow in one direction, it cannot be destroyed completely as it changes its form.
The energy that is received from the sun is transferred to the green plants, they include this energy to animals that are producers to consumers that include primary consumers and secondary consumers to decomposers, and then this energy leaves the system.
Find out more information about the ecosystem.
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The three domain system resulted in dividing all life into three ____, called ___, ___, and ____.
Answer:
systems
Archaea
Bacteria
Eukarya
Explanation:
The three domain system resulted in dividing all life into three systems, called Archaea, Bacteria, and Eukarya.
Hope this helps! :)
What do plants use to form
glucose?
Answer: Plants, unlike animals, can make their own food. They do this using a process called photosynthesis . During photosynthesis, plants produce glucose from simple inorganic molecules - carbon dioxide and water - using light energy.
Which best describes the end result of meiosis?
O A. two diploid cells identical to the parent cell
o B. four haploid cells identical to the parent cell
C. two diploid cells different from the parent cell
D. four haploid cells different from the parent cell
Can you guys please help me
please help! i dont really get this at all
Answer:
The slope between the red points is 2/4 (simplified it is 1/2). The slope between the green points is 4/8 (simplified it is 1/2). This shows that by taking ANY two points on the line, you will find the same slope.
Why does sodium and potassium ions need a protein pump to pass through the cell membrane?
A. The ions have a charge and cannot pass directly through the cell membrane.
B. The ions are moving against the concentration gradient.
C. Energy is needed to move the ions.
D. All of the above.
Cell membrane have been the selective membrane that allows transportation. Sodium and potassium ions need a protein pump as they are charged particles that move against the gradient and need energy. Thus, option D is correct.
What is active transport?Active transport has been the way to move ions and molecules inside and outside the cell membrane. This system of transportation requires energy as the ions move from low concentration regions to the region of the higher electrochemical area.
The sodium and potassium pump needs proteins and energy to move the ions as the inside of the cell is rich in potassium and the exterior is rich in sodium ions. The charged ions moving against the concentration cannot enter the cell without energy and protein pumps.
Therefore, option D. all of the above statements are correct.
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Why do nervous system
responses tend to be more rapid
than endocrine system responses
If 22% of a DNA sample is made up of cytosine, C, what percentage of the sample is made up of adenine,
A?
Answer:
28% of Adenine
Explanation:
Chargaff's Rule states that A = T and C = G
Because of that, the sample must have the equation:
A + C = T + G
G must have the same amount as C so,
A + .22 = T + .22
Both sides of the equation must equal each other by .50, so .50 - .22 = .28
.28 x 100 = 28%
If 22% of a DNA sample is made up of cytosine, C, the percentage of the sample is made up of adenine, A is 28%
What is DNA?The DNA sequence is the sequence or pairing of DNA bases. RNA and DNA both are genetic materials and both are made up of nucleic acids made up of deoxyribose acid and iron is made up of ribonucleic acid.
DNA and RNA both contain four bases that are joined with hydrogen bond RNA contain uracil in the place of thymine and DNA contain timing all other bases are the same.
Chargaff's Rule states that A = T and C = G
Because of that, the sample must have the equation:
A + C = T + G
G must have the same amount as C so,
A + .22 = T + .22
Both sides of the equation must equal each other by .50, so .50 - .22 = .28
.28 x 100 = 28%
Therefore, the percentage of the sample is made up of adenine, A is 28%
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hello help please i’ll mark brainliest!!!
Answer:
the secone option
Explanation:
i just need one more brainliest thanks<3
Answer: The third one
Explanation: It is the third one because scientist have been talking about how there are billions of galaxy's in our universe.
Question 6
Thermal is to heat as _____
is to water.
A. Absorb
B. Dilute
C. Waste
D. Drain
Answer:
drain
Explanation:
thermal is to hear as drain is to water
Answer:
thermal is to heat as dilute is to water
Select ALL of the following that are directly involved with making a protein
Ribosome
Cell Membrane
DNA
Cytoplasm
Cell Membranes,Ribosome, Cytoplasm are used to make protein
Explanation:
Proteins are formed in a condensation reaction when amino acid molecules join together and a water molecule is removed. The new bond formed in protein molecules where amino acids have joined (-CONH) is called an amide link or a peptide link.
hope it will help you
Please help me in science!
Groundhogs sometimes eat garden vegetables such as these peppers. Once the pepper has been eaten and digested, the seeds exit the animal through its waste. In what way does this help the pepper plants?
What percentage of Americans use solar power ?
Answer:
66.7 percent.
Explanation:
Limiting nutrients often...
Answer:
hiii
Explanation:
The diagram shows the life cycle of a fern,
What does stage 2 show?A. A gamete-producing fern plant is flat and shaped like a heart.
B. A zygote forms when a sperm fertilizes an egg cell.
C. A mature spore-producing fern plant has fronds and produces
spores
D. A spore grows into a mature gamete-producing plant,
Answer:
the correct answer is D!
A spore grows into a mature gamete-producing plant.
Explanation:
hope this helps :)
A spore grows into a mature gamete producing plant is best describe the life cycle of fern.
What is the life cycle of fern?The life cycle of the fern has two different stages such as sporophyte and gametophyte. The sporophyte stage which releases spores whereas gametophyte stage which releases gametes. Gametophyte plants are haploid whereas sporophyte plants diploid. This type of life cycle is known as alternation of generations.
So we can conclude that a spore grows into a mature gamete producing plant is best describe the life cycle of fern.
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what are the two main types of chemical bonds?
Answer:
Chemical bonds include covalent, polar covalent, and ionic bonds. Atoms with relatively similar electronegativities share electrons between them and are connected by covalent bonds. Atoms with large differences in electronegativity transfer electrons to form ions. The ions then are attracted to each other.
Two of the strongest forms of chemical bond are the ionic and the covalent bonds. Chemical bonds form between two atoms, each with its own electron environment.
Hope it helps!!!
Answer:
the two main types of chemical bonds are:
ionic bonds and covalent bonds.
helppp pleasee!!!!!!
Answer:
last option is a correct answer.
Explanation:
the moon and the earth spin around each other.
Hope this helps!
Deforestation leads to environmental imbalance. Give reason.
Answer: Well, deforestation is cutting down trees, and many arboreal animals live in those trees. So if they have no proper shelter, they would have no place for personal activities such as breeding, feeding etc. And without those important activities that they have to do everyday, the population of arboreal animals will keep on decreasing until they go extinct. Though that's not the only problem. The herbivores won't get anything to eat, hence not letting the omnivores or carnivores get their food. As you can see, deforestation can create a huge environmental imbalance.
How is the scale of objects used when scientists create models of real world phenomenon and why is it important?
Answer:
To compare things.
Explanation:
The scale of objects used by scientists to create models of real world phenomenon because the scales helps the scientists to show the difference between objects and their effect on one another that contributes in the process or phenomenon. It is important because it helps us to make accurate models to understand the process or phenomenon that is related to the real world.
How does increased heat energy affect the water cycle? Helpppp
Answer:
Heat causes liquid and frozen water to evaporate into water vapor gas, which rises high in the sky to form clouds... clouds that move over the globe and drop rain and snow. This process is a large part of the water cycle.
A football player kicks a ball 6.5 meters how much time is needed for a ball to travel this distance if it's speed is 22 m/s
Answer:
.3 m/sec
Explanation:
Flowes come in red, blue and purple colors. Cross 2 purple flowers what percent of the offspring will be blue