A chemical that does a great deal of biological damage to DNA is:

a) hydroxy ion
b) hydrogen ion
c) antioxidants
d) hydroperoxyl radical


Ans: d) hydroperoxyl radical

Biology & Microbiology

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It has been estimated that if everyone in the

world had the same lifestyle as the average American, it would require ___ more Earths.

a. 1 b. 2 c. 3 d. 4 e. 5

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Muscle contraction accounts for over 75% of the heat generated by the body

Indicate whether the statement is true or false

Biology & Microbiology

The two major types of viruses are DNA and RNA viruses.

a. true b. false

Biology & Microbiology

A common food intoxication is caused by enterotoxin-producing strains of

A. Staphylococcus saprophyticus. B. Staphylococcus epidermidis. C. Streptococcus pyogenes. D. Staphylococcus aureus. E. Streptococcus agalactiae.

Biology & Microbiology