The relationship between the human body and its microbiota:

a. is never beneficial to either
b. is an example of a symbiosis
c. is established before birth
d. usually leads to parasitism


b. is an example of a symbiosis

Biology & Microbiology

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Ionizing radiation can produce which of the following?

A. cytosine B. free radicals C. stop codons D. thymine dimers E. hypoxanthine

Biology & Microbiology

What is the result of meiosis?

a. 2 diploid cells b. 4 diploid cells c. 2 haploid cells d. 4 haploid cells e. 1 haploid cell

Biology & Microbiology

Activated thrombin makes this protein change

A) fibrinogen B) agglutinate C) plasmin D) prothrombin

Biology & Microbiology

The way that genetic material of a bacteriophage enters a bacterium is most like the way that

A) a drug is injected with a hypodermic needle. B) a person swallows a pill. C) skin lotion is rubbed onto the hands. D) water soaks into a sponge.

Biology & Microbiology