Peristalsis<span> is a radically symmetrical </span><span> contraction and relaxation of muscles</span><span> that propagates in a wave</span><span> down a tube, in an anterograde direction.</span>
The answer is D. i past this class with a 98 overall score.
<span>Proteins are composed of __20__ amino acids, of which __9__ are essential amino acids and __11__ are nonessential amino acids.</span>
Correct Answer:
C, D, A, B
Explanation:
I took the test using the person's above answer, got 2 wrong, therefore it's C, D, A, B, instead of C, A, D, B.
I hope this helps
They use the pseudopodium for movement