Air passage into the trachea of most insects is controlled by the closing and opening of valves, which operate special openings called
A. ocelli.
B. Malpighian tubules.
C. spiracles.
D. ommatidia.
E. book lungs.
Answer: C
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Cholera is an example of a pandemic disease that
A) has multiple wild animal reservoirs and is thus difficult to eradicate. B) spreads from a common source and could be controlled with adequate clean water and waste sanitation measures. C) is spread through direct contact and has only a human reservoir. D) has recently emerged due to overcrowding in urban centers.
The function of the stop- transfer and start-transfer sequence is to make a________ protein
Fill in the blank(s) with the appropriate word(s).
The lower neck of the uterus, which opens into the vagina, is called the ____________________. Fill in the blank(s) with the appropriate word(s)
Streptokinase is useful for which of the following?
A) producing antibiotics B) cheese production C) biosensors D) dissolving blood clots E) insecticide