Which structure is common to plant and animal cells?

A) chloroplast
B) wall made of cellulose
C) central vacuole
D) mitochondrion
E) centriole


Answer: D

Biology & Microbiology

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Buccal pumping is:

A. pumping blood from the atria to the ventricle B. pumping air into the lungs by raising the floor of the throat C. pumping blood from the ventricle to the body D. pumping wastes through the kidneys E. pumping blood from the ventricle to the atria

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What is the estimated influence of genes (as opposed to environment) on a trait called?

What will be an ideal response?

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An organism that can exist in both oxygen and oxygen-free environments is a(n)

A. facultative anaerobe. B. microaerophile. C. obligate anaerobe. D. obligate aerobe. E. aerobe.

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