What is the type of bond between two strands of DNA?

A. A ionic bond
B. A covalent bond
C. A peptide bond
D. A hydrogen bond


Answer: D

Biology & Microbiology

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Verotoxin can cause

A) hemorrhagic diarrhea. B) liver failure. C) brain damage. D) hemorrhagic diarrhea, liver failure, and brain damage.

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Which of the following has not contributed to the evolutionary success of arthropods?

a. jointed appendages b. water vascular system c. well-developed sense organs d. hard exoskeleton e. compound eyes

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The butterfly-shaped center of the spinal cord (the gray matter) is made up of

a. dendrites. b. neuronal cell bodies. c. interneurons. d. neuroglial cells. e. all of these.

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In a human zygote, where did most of the cytoplasm come from?

A) spermatogonia B) oocyte C) polar bodies D) sperm

Biology & Microbiology