-All signal transduction cascades are shut down immediately so as to prevent the cell from mounting a response.
-Cells are unable to respond quickly to hormones, and therefore signal transduction cascades always occur over a long time.
-Cells have to be able to function alone, because they are unable to work together in a coordinated fashion.
-Cells often have to respond very quickly to changes in their internal and external environments.
Answer:
Muscle spindles
Explanation:
Muscle spindles are stretch receptors thst has both the sensory abd motor components ĺocated in the body of a muscle that basically signals on alterations in the muscle length. They transfer the length information to the central nervous system through the afferent nerve fibers. It fasten the motor neurons through the stretch reflex to prevent muscle stretch. Muscle spindles are sensory receptors that are majorly found in the muscle.
The answer is a) genotype
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