In the intestinal tract, Entamoeba histolytica
A. lives as a commensal in the lumen of the intestine.
B. can invade the host tissue.
C. can undergo excystation in the small intestine.
D. All of the choices are correct.
Answer: D
Biology & Microbiology
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Mitochondria likely arose from _________ and chloroplasts likely arose from _________
Fill in the blank(s) with correct word
Biology & Microbiology
The adrenal cortex produces
a. aldosterone. b. epinephrine. c. norepinephrine. d. testosterone. e. glucagon
Biology & Microbiology
Which of the following hormones is NOT
produced in ovaries?
a. estrogen b. progesterone c. testosterone d. all of these are produced in the ovaries e. more than one of these is NOT produced in the ovaries
Biology & Microbiology
In eukaryotes many genes may be affected by a steroid hormone because they are clustered in operons
1.True 2.False
Biology & Microbiology