Abraham Lincoln’s son, Robert, showed no signs of Marfan syndrome
a. True
b. False
True
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Comb-jellies are similar to bilaterians in that they (select all that apply):
A. have a "flow-through" gut with both a mouth and an anus. B. develop muscle cells from a rudimentary mesoderm. C. have an anterior-posterior body axis. D. use acetylcholine as a neurotransmitter. E. none of these.
Which of the following plant nutrients is
mismatched with its function?
a. nitrogen--component of nucleic acids b. phosphorous--component of proteins c. sulfur--component of chlorophyll d. iron--enzyme cofactor e. all of these plant nutrients are matched correctly with their functions
Exocrine glands:a
have products that are transported via the circulatory system. b. lack ducts. c. include goblet cells and milk glands. d. release hormones. e. lack epithelial tissue
The pleasurable effects of cigarette smoking are due to an increase in the release of the neurotransmitter ________
Fill in the blank(s) with correct word