A key concept in evolution is that all mutations are

A) random.
B) neutral.
C) deleterious.
D) either deleterious or beneficial.


Answer: A

Biology & Microbiology

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Which of the following large organic molecules include table sugar?

A. Carbohydrates B. Lipids C. Nucleic acids D. Proteins

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A plant cell with 64 available ATP molecules could split how many N2 molecules with the assistance of nitrogenase?  

A.  2 B.  4 C.  16 D.  32 E.  64

Biology & Microbiology

Which organism contains an endoskeleton?

a. Crabs b. Earthworms c. Clams d. Snakes e. Sea anemone

Biology & Microbiology

A heavy load of parasites is termed a(n) ________

Fill in the blank(s) with correct word

Biology & Microbiology