How can a signal be amplified?
a. Activation of the signal propagation network can cause the signal to collapse and not propagate.
b. Signal activation can result in phosphorylation of unrelated receptors and the propagation of different types of signals.
c. Activation of a receptor-linked enzyme can activate many copies of the response molecule.
d. A cascade of upstream events can result in activation at inappropriate times when the signal is not intended.
c. Activation of a receptor-linked enzyme can activate many copies of the response molecule.
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Which stage of infection is characterized by host deterioration and possibly death?
a. Prodromal b. Clinical c. Decline d. Convalescent
Can you inherit physical traits that your parents acquired during their lifetime?
A. Only if it improves reproductive success B. Yes C. No D. Only if it improves survivability
Name the bases in DNA and their pairing specificities
What will be an ideal response?
The bottleneck effect
A. occurs when many members of a population die, resulting in a great loss of genetic diversity. B. occurs when many members of a population reproduce, causing too much genetic diversity within the population. C. occurs when small groups of individuals leave their home population and establish new settlements, mating only among themselves. D. occurs when large groups of individuals leave their home population and establish new settlements, mating only among themselves. E. does not occur in nature.