Choose the receptor that is NOT correctly matched with its function.
A. proprioceptor - monitors stretch of muscle fibers
B. baroreceptor - monitors hydrostatic pressure in blood vessels
C. nociceptor - transmits signals that the brain interprets as pain
D. chemoreceptor - perceives taste and smell stimuli
E. peripheral chemoreceptor - monitors the pH of the cerebrospinal fluid
E. peripheral chemoreceptor - monitors the pH of the cerebrospinal fluid
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What would happen if an enzyme inhibitor for the enzyme photodiesterase (PDE) was applied to a vertebrate eye?
A) The opsins found in cones would not be differentiated into the red, blue, and green proteins, causing the animals to be color blind. B) The cGMP-gated sodium channels would remain open, glutamate would be continuously discharged at the synapses, and the brain would not detect light absorbed by the rod cells. C) The lens could not be appropriately adjusted to focus light on the retina, resulting in either nearsightedness or farsightedness. D) All of the listed responses are correct.
The lactobacilli, in their role as normal flora of the vagina, help the vagina resist infection by contributing to
A. the neutrality of the vaginal mucus. B. acidity of the vagina. C. food for the resident vaginal flora. D. fertility of the host.
In 2013, scientists in Europe discovered a new organelle in grapes that they named the tannosome. This discovery was the result of creative microscopy. If looking to discover a new organelle, which are located inside the cell, what kind of microscope must be used?
a. brightfield microscope b. scanning electron microscope c. transmission electron microscope d. compound light microscope.
What type of fungus is responsible for a disease that has wiped out large numbers of harlequin frogs?
1.Ascomycete
2.Basidiomycete
3.Chytrid
4.Zygomycete