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3 years ago

Compare the roles of the phospholipid bilayer in passive and active transport.

Biology

1 answer:

morpeh [17]3 years ago

4 0

Answer:

Phospholipid bilayer determinates which molecules can enter or exit the cell so its purpose is to be a checker in the middle. Cell membrane determinates the structure of the cell and it is the connection to the rest that happens in a cell.

Explanation:

Molecules can move in 2 ways: passive and active.

The only difference is the energy that is needed to do the movement.

In passive mechanisms, energy is not used, while in active transport, energy is needed. Diffusion or passive transport are moving the concentration from hight to low so the energy is not necessary. Active transport moves from low to a high concentration and it uses metabolic energy.

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Between water, plant, air,sun which is the most important and without which one can die

Diano4ka-milaya [45]

Answer:

I think the answer is air

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Explanation:

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3 years ago

Amanda is presented with a piece of metal and asked to determine its physical

vesna_86 [32]

Answer:

D. magnetism, electrical conductivity, high melting point

Explanation:

Magnetism is the property of metal due to which they are attracted by magnets. Metals have high electrical conductivity which means they are good conductors of electricity. They also have high melting points i. e. they require high amount of heat to change its solid state into liquid state. In melting, bonds are broken down due to the applicable of heat energy.

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3 years ago

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How do earthworms breathe?

dlinn [17]

They breathe through their skin. Air dissolves on the mucus of their skin, so they MUST stay moist to breathe. If worms dry out, they suffocate. As fresh air is taken in through the skin, oxygen is drawn into the worm's circulatory system, and the worm's hearts pump the oxygenated blood to the head area.

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3 years ago

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Frogs produce a great deal of gametes. why?

VladimirAG [237]

<span> In order for the living of the species, when they reproduce, they do so in the millions so that a some of the progeny will be bound to survive.</span>

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3 years ago

Amoeba sisters video recap: Genetic Drift

Sunny_sXe [5.5K]

Answer:

Genetic drift is simply a change in the frequency of alleles in a population.

Like shown in the comic A, there are different genes present on chromosomes. All of these genes are made up of a pair of alleles. These alleles determine the genotype and the resulting phenotype of an organism.

If none of the alleles is favored by the environment, then a population will have equal no.of all the variant forms of a trait. Like shown in the comic B, both the green and the grey animals are favored equally.

But if natural selection occurs and one form of the allele variant is favored, then a genetic drift will occur. Most of the organisms will have the alleles which are favored by the environment. Like shown in Comic C, where the grey alleles are favored more than the green alleles.

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3 years ago