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svetoff [14.1K]
2 years ago
11

Which of the following is a basic requirement for evolution by natural selection to work? A. Individuals must reproduce at a rap

id rate. B. Each population must be small in size. C. A population must have some genetic variation. D. All of the above.
Biology
2 answers:
mina [271]2 years ago
8 0

Answer:

d

Explanation:

Anon25 [30]2 years ago
3 0

Answer:

D

Explanation:

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Answer is hemoglobin S.

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Hemoglobin S is considered as an abnormal type of hemoglobin which a child can be inherited from the parents. This cause the red blood cells to have distinct shapes from their normal shape. The red blood cells will have a sickle shape which is different from their normal round disk shape.

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During Anaerobic respiration, cells make energy without:
LenKa [72]

During anaerobic respiration , cells make energy without <u>Oxygen</u>

the energy obtained during anaerobic respiration is 2 ATP

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All lipids (Fats) contain the following elements except:
Alla [95]
Oxygen because lipids are fats that need oxygen to use long term energy
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During the water cycle some of the water in the oceans and freshwater bodies, such as lakes and rivers, is warmed by the sun and evaporates. During the process of evaporation, impurities in the water are left behind. As a result, the water that goes into the atmosphere is cleaner than it was on Earth.

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Most water-soluble hormones exert their effects through the second messenger cyclic AMP (cAMP). This activity will test your und
Viktor [21]

Answer:

cAMP dependent pathway is important for processing of life.

Explanation:

cAMP pathway is also called as adenynyl cyclase pathway.

This mechanism requires different steps like-

  1. G protein coupled receptor is a integral protein that is activated by different external stimuli which binds with the specific ligand.
  2. Extracellular ligand causes activation of GPCR which in turn is responsible for conformational change  in the receptor and allows it to bind with the intracellular heterotrimeric G protein complex.
  3. The Gα  stimulate G protein complex to exchange GDP for GTP and then the complex is released.
  4. Activated Gα binds with adenylate cyclase and catalyzes ATP to form cyclic AMP.
  5. Activation of cAMP leads to the activation of nucleotide gated ion channel, and PKa(Protein kinase A) which is also called as cAMP dependent enzyme.
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