Obligate anaerobes cannot tolerate any free oxygen in the environment and will die if exposed to free oxygen.

A) True
B) False


A) True

Biology & Microbiology

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A typical primary response to an antigen peaks in about

a. one-two days. b. four-five days. c. two weeks. d. two months. e. four months.

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Sheila is experiencing contractions every 15 to 20 minutes that last for 40 seconds or longer. Is she in labor?

A. No B. Yes

Biology & Microbiology

Neuroendocrine cells release neurohormones which are transported through contact or diffuse through interstitial

fluid. Indicate whether the statement is true or false.

Biology & Microbiology

Pairing of homologous chromosomes during meiosis I.

What will be an ideal response?

Biology & Microbiology