Animals are ____ organisms, and their cells ____ cell walls

a. all prokaryotic; lack
b. all eukaryotic; have
c. either prokaryotic or eukaryotic; have
d. all eukaryotic; lack
e. either prokaryotic or eukaryotic; lack


ANSWER: d

Biology & Microbiology

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Specifically, female sex organs are known as

(a) oogonia. (b) gametangia. (c) antheridia. (d) zygotes.

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The most abundant protein on Earth is:

A. chlorophyll. B. cellulose. C. rubisco. D. water. E. keratin.

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One plasma cell can synthesize approximately ________ antibody molecules per second.

A. 2000 B. 200,000 C. 20,000 D. 200

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Explain why atoms such as helium, neon, and argon do not react with other atoms

What will be an ideal response?

Biology & Microbiology