Which of the following structures is NOT found in

mature sperm?
a. nucleus
b. acrosome with enzymes
c. mitochondria
d. microtubules in the tail
e. ribosomes


Answer: e

Biology & Microbiology

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Which of the following statements best compares the ovary, ovule, and egg?

A. The three terms are synonymous. B. The ovary is the lower part of the pistil that houses the ovules (also called eggs). C. An ovule is the lower part of the pistil that houses the ovary that in turn contains the eggs. D. Ovules are small ovaries and either can produce eggs. E. The ovary is the lower part of the pistil that houses the ovules that in turn contain the eggs.

Biology & Microbiology

Thermus aquaticus was important in the

development of PCR in that it provided the necessary a. DNA polymerase. b reverse transcriptase. c. primers. d. DNA template. e. DNA ligase.

Biology & Microbiology

Virus replication results in the death of the cell in ________ infection(s)

A) a lytic B) a latent C) a persistent D) a lysogenic E) both latent and persistent

Biology & Microbiology

Bone cancer and other cancers of connective tissue are called

A. lymphomas. B. blastomas. C. carcinomas. D. sarcomas. E. leukemias.

Biology & Microbiology