If a coelom had been present in a species but was then lost over time, which function would you hypothesize could be most affected?
A. nervous.
B. muscular.
C. reproductive.
D. digestive.
B. muscular.
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Why was Escherichia coli thought to be a dominant member of the human gut microbial community in the past? What populations ARE important in the human gut and what evidence do we have that the specific bacteria present are important for human health?
What will be an ideal response?
In seed plants, which develops into a female gametophyte?
a. megaspore b. microsporangium c. microspore d. megasporangium e. sporophyte
When cells are not responding to normal controls over
growth and division, they form a tissue mass known as a a. metastasis. b. malignancy. c. tumor. d. carcinogen. e. nucleosome.
A high therapeutic index is advantageous. This refers to
A. high efficacy of the drug against the target microbe. B. selective toxicity and human toxicity are both high. C. the ratio between low selective toxicity and high human toxicity. D. the ratio between high selective toxicity and low human toxicity.