Consider the observation that serine is the amino acid residue that can be replaced by another amino acid with the least effect on protein structure and function. Which of the following is the most reasonable rationalization of this observation?

a. Serine is the amino acid residue that can be replaced with the least effect on protein structure and function.
b. Replacement of tryptophan causes the greatest effect on protein structure and function.
c. Replacements such as Lys→ and Leu → usually have very little effect on protein structure and function.

Penelope studies how the structure and function of the nervous system is related to behavior. she is a psychologist

Hurry i need your (100 points) 1) what are the responsibilities of the region of the brain highlighted below? (picture located below) the highlighted portion is at the rear base of the brain, behind the brain stem. regulating homeostasis, hunger and eating, thirst and drinking, and many other functions of basic survival. coordinating movement and balance by using information from sensory nerves, including hand-eye coordination. controlling voluntary body movements, processing information from sense organs, thoughts, and learning abilities. regulating important involuntary bodily functions such as blood pressure, heart rate, breathing, and swallowing. 2)which of the following systems or structures is correctly paired with its function? neurons - brain cells that control thoughts, calculations, and memory cerebral cortex - portion of the brain that controls involuntary body movement peripheral nervous system - carries impulses to and from the central nervous system central nervous system - carries information from the nerves to the muscles and glands

Which of these correctly describes the difference between processes that take place in prokaryotic and eukaryotic cells?