Taste buds contain clusters of _____ and supporting cells inside special epithelial papillae
1.chemoreceptors
2.mechanoreceptors
3.photoreceptors
4.thermoreceptors
1
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When a Bacillus anthracis population suddenly must form spores to survive a harsh nutrient poor environment, how do the cells obtain energy?
A) Cells in a growth phase that have not used up all of their energy will be the only ones to make endospores, which is why relatively few endospores are often made from a large population. B) Intracellular energy reserves are quickly made available to produce endospores. C) Slow responding cells are cannibalized by others that already began spore formation. D) Global regulation is initiated to minimize energy waste in biosynthetic pathways and catabolic pathways are increased to consume remaining usable substrates to fuel spore formation.
Which of the following bacterial diseases is transmitted by a louse?
A) epidemic typhus fever B) Lyme disease C) plague D) Rocky Mountain spotted fever
Viagra® works by dilating the arteries to the penis and other parts of the body. Why shouldn't a person use nitroglycerin at the same time that he is using Viagra®?
What will be an ideal response?
A cell is placed in distilled water and then transferred to a 5% salt solution. As a result of this procedure , the cell would be likekly to
a. get larger b. get smaller c. get larger , then smaller d get smaller, then larger