What is polyploidy?

a. less than the correct number of chromosome sets
b. an extra chromosome 21
c. more than the correct number of chromosome sets
d. a missing sex chromosome


c. more than the correct number of chromosome sets

Biology & Microbiology

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Restriction endonucleases are produced by

A. fungi. B. protozoa. C. plants. D. bacteria. E. All of the choices are correct.

Biology & Microbiology

Many proto-oncogenes encode ____

a. growth inhibiting factors b. intracellular receptors

c. tumor suppressor proteins d. receptors for growth inhibiting factors e. growth factors

Biology & Microbiology

The kidneys produce urine, maintain water balance, and regulation salt balance.

a. true b. false

Biology & Microbiology

Which of the following is NOT a function of plastids?

A) Extracting energy from food and converting it to ATP B) Storing pigments C) Storing photosynthetic products D) Carrying out photosynthesis

Biology & Microbiology