What is the composition of peptidoglycan?

a. amino acids
b. monomeric sugar compounds
c. N-acetylglucosamine and N-acetylmuramic acid
d. N-acetylglucosamine, N-acetylmuramic acid, and a few amino acids


Answer: D

Biology & Microbiology

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A. adenine with thymine in both DNA and RNA B. adenine with uracil in DNA and with thymine in DNA C. adenine with thymine in DNA and with uracil in RNA D. adenine with cytosine in DNA and with guanine in RNA E. adenine with guanine in DNA and with cytosine in RNA

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Which of the following types of microscopes would be most appropriate for viewing the anatomy of a whole organism?

a. light microscope b. dissecting microscope c. scanning electron microscope d. transmission electron microscope

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Spawning is when fish release their

A) sperm and eggs B) gametes C) excretions D) waste matter

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Lichens are symbiotic associations that __________.

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