Which phrase best describes nucleosomes?

a. eukaryotic DNA associated with histone proteins
b. eukaryotic DNA associated with nonhistone proteins
c. prokaryotic DNA associated with nonhistone proteins
d. prokaryotic DNA associated with histone proteins


Answer: a. eukaryotic DNA associated with histone proteins

Biology & Microbiology

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Two genes are on the same chromosome, yet crossing over occurs between them every time meiosis occurs. Are these

genes linked or unlinked and why?

What will be an ideal response?

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What does ricin do in the body? a. Denatures enzymes

b. Increases metabolic reactions. c. Increases the rate at which ribosomes transcribe proteins. d. Increases the rate at which ribosomes translate proteins. e. Inactivates ribosomal function.

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Spongy bone is indicated by

a. A. b. B. c. C. d. D. e. E.

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Their cell wall, if present, may contain Chitin:

A. Prions B. Prokaryotes C. Fungi D. Protozoa E. Helminths

Biology & Microbiology