In the oceans, prokaryotes are outnumbered ten to one by

A) zooplankton.
B) diatoms.
C) viruses.
D) phytoplankton.


Answer: C

Biology & Microbiology

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Research by Malte Andersson suggests the long tail feathers of male African widowbirds are a product of ____

selection because females are more strongly attracted to males with long tails than to males with short tails.

a. disruptive b. intersexual c. intrasexual d. artificial e. stabilizing

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If a person who has never been infected with human herpesvirus 3 comes in contact with the fluid of shingles lesions, they will come down with ________.

A. infectious mononucleosis B. herpes keratitis C. chickenpox D. shingles E. herpes labialis

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The extraembryonic membrane closest to the embryo is the:a

amnion. b. archenteron. c. chorion. d. blastocyst. e. neural plate

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Which of the following organelles plays an important role in apoptosis, or programmed cell death?

a. ribosomes b. mitochondria c. chloroplasts d. vacuoles e. peroxisomes

Biology & Microbiology