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
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.
suppose you find a paper clip stuck to a magnet you pull off the paper clip and move it to a short distance away from the magnet what happened to the magnetic Force between the magnet and the paper clip A. it disappears B. it gets stronger C. it gets weaker D.it stays the same
Answer: C
Explanation: it gets weaker because there not as close together
When the environment acts for or against one extreme characteristic, this is an
example of which category of natural selection?
Answer:
Directional selection
Explanation:
occurs when natural selection favors one extreme of continuous variation. Over time, the favored extreme will become more common and the other extreme will be less common or lost.
If too many pandas are competing for bamboo (their food), what could happen?
there will always be enough for them to share
eventually there will no be enough bamboo for all
bamboo will keep growing back
Answer:
Eventually, there will no be enough bamboo for all
Explanation:
Answer B. Eventually, there will not enough bamboo for all.
Explanation:
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.
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
What percentage of Americans use solar power ?
Answer:
66.7 percent.
Explanation:
plz help and dont take the points
Which graphic organizer best represents asexual reproduction? Which graphic organizer best represents sexual reproduction? Explain your answers.
The one with one parent and five offspring represents asexual reproduction. Asexual reproduction only requires one parent, so the offspring are genetically identical to the parent. The advantage is that organisms can reproduce much quicker using this method.
The organizer with two parents and one offspring represents sexual reproduction. Again, sexual reproduction requires two parents.
how barometer helps in agriculture
Fill in the blanks.
There are ___ different amino acids
Answer:
twenty
Explanation:
Why do nervous system
responses tend to be more rapid
than endocrine system responses
True or False
A chloroplast consists solely of a football shaped container of chlorophyll.
The answer is False :)
how many codons specify 5 amino acids?
Answer:
20, Im not completely sure tho
Explanation:
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
Hi all!
Pls help me in these 2 simple questions.....
Thanks in advance!
Answer:
pollination is the transfer of pollen grain from Male part to female part of flower
two types of pollination
1. self pollination
2.cross pollination
it is important for plant existence
explain the full meaning of xerophytes
Answer:
xerophytes is a species of plant that has adaptations to survive in an environment with little liquid water such as a desert,ice or snow covered region.
examples are; pineapple and gymnosperm plants.
Explanation:
xerophytes are species of plants that can live in Extreme conditions like in the desert where there is very little water or in the Alps where water is frozen water
example -cactus
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?
Flowes come in red, blue and purple colors. Cross 2 purple flowers what percent of the offspring will be blue
Explain what other steps need to be taken to demonstrate that each of these factors is needed for photosynthesis.
light
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.
Learn more about active transport, here:
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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:
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
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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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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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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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
could a woman with O- blood type be the mother of an AB- child? explain your answer.
Please help me in science!
why aren't scientific theories just called facts?
Answer:
Explanation:
Is this a question or a joke?