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Inga [223]
3 years ago
9

How do brain cells "talk" to each other?

Biology
1 answer:
Lostsunrise [7]3 years ago
6 0
Neurons and neurotransmitters didn’t see first answer please make Brainlyist have a good day
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Consider the data on cliff swallow mortality. Why is this an example of directional selection?Overall genetic variation decrease
Gala2k [10]

Answer:

The average trait value changed in one direction.(In this case, larger size)

Explanation:

In evolution a natural selection can be disruptive, directional or stabilizing

In stabilizing no extreme trait is favored hence provides intermediate values .

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Directional, the enviroment will favor the survival of one trait hence a change in direction either towards the left or the right.

In the case of swallow cliff mortality, selection favored the larger size.

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2 years ago
Which statement best describes the molecular structure of protein, along with one of the functions of proteins?
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The second option is the best answer.

Proteins are complex polymers of amino acids. They are folded into 3 dimensional structures . This folding defines not only the size and shape of the protein, but also its function.

The folding of a protein allows for interactions between amino acids that may be distant from each other in the primary  sequence of the protein. In enzymes, some of these amino acids form a site in the structure that catalyzes the enzymatic reaction. This site is called the active site.


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