Practice question
Question
A 25 amino acid α-helical protein is spanning the thickness of a mammalian cell membrane. Using the average dimensional parameters of a typical α-helix, the thickness of the membrane will be ______ Å (rounded off to one decimal place). (NAT)
Explanation
Mechanistically, enzyme kinetics involves substrate binding and catalytic efficiency determine reaction rates. This validates Option NAT because it reflects active-site specificity and regulation, a pattern repeatedly demonstrated in biochemistry research.
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