Constipation can result from the consumption of a substance that _____
A) promotes water reabsorption in the large intestine
B) speeds up movement of material in the large intestine
C) decreases water reabsorption in the small intestine
D) stimulates peristalsis
A
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How a male rat behaves toward a female has been shown to alter ____ in her brain, presumably then
activating ___ receptors in some neurons.
a. peptide hormones; neurotransmitter d. neurotransmitter release; testosterone b. neurotransmitter release; steroid hormone e. neurotransmitter release; peptide hormone c. cAMP kinases; steroid hormone
All fungi are multicellular, but some also have a unicellular form that is called:
a. yeast. b. fruiting body. c. hyphae. d. seeds. e. spores.
Once infected with Trypanosoma brucei, the patient's immune system cannot clear the infection and develop immunity because the parasite
A) has flagella that allow it to travel all over the body. B) matures into infectious trypomastigotes. C) reproduces by binary fission. D) changes its glycoprotein surface antigens every time it replicates. E) invades the central nervous system.
How many bones are present in the pelvic girdle?
A. three B. one C. five D. two E. four