The placenta takes over progesterone production at which developmental week in humans?
a. 4
b. 8
c. 12
d. 16
e. 20
ANSWER: c
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A) found in freshwater lakes and streams B) marine C) amphibious D) found in arid terrestrial environments E) found in terrestrial environments with adequate moisture
A patient with an indwelling catheter tip began spiking a fever of 39°C. The site of the catheter was inflamed and red. The catheter tip was cultured, and the following organism was isolated: a nonlactose-fermenter on MacConkey agar; a glucose, xylose, and mannitol oxidizer with the ability to hydrolyze esculin. This organism is most likely which one of the following?
a. CDC group EF-4b b. S. putrefaciens c. R. radiobacter d. P. yeei
Guard cells contain chloroplasts
Indicate whether the statement is true or false.
The tuberculin response is an example of allergic contact dermatitis
Indicate whether the statement is true or false