Abraham Lincoln’s son, Robert, showed no signs of Marfan syndrome

a. True
b. False


True

Biology & Microbiology

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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.

Biology & Microbiology

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

Biology & Microbiology

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

Biology & Microbiology

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

Biology & Microbiology