When does the most rapid growth occur during pregnancy?

a. first trimester
b. second trimester
c. third trimester
d. implantation


c. third trimester

Biology & Microbiology

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The source of variation among microorganisms that were once identical is

A. antibiotic resistance. B. virulence factors. C. sigma factors. D. mutation.

Biology & Microbiology

How does stomach acid assist the innate immune system?

a. The acid signals B cells to the site of infection. b. The acid signals T cells to the site of infection. c. The acid creates an inhospitable environment for pathogens to live. d. The acid breaks down the food sources, and the pathogen starves.

Biology & Microbiology

The secretion of TSH by the anterior pituitary gland stimulates the thymus to secrete thymosin.

a. true b. false

Biology & Microbiology

While focusing on a microscope on high power, a student crushed the coverslip. The student probably

a. shut the light off b. turned up the light intensity c. rotated the eyepiece d. used the coarse adjustment

Biology & Microbiology