Choose ALL of the best answer(s). You may select one or more than one answer. A
ID: 174365 • Letter: C
Question
Choose ALL of the best answer(s). You may select one or more than one answer.
A myosin II isoform from one species (species A) has a longer neck than neck length of a myosin II homolog in another species (species B). You can predict the following about the myosin II in species A and species B.
The myosin II in species A has a higher affinity for ATP than does myosin II in species B.
The myosin II step size in species B is larger than the step size in species A.
The myosin II overall transport rate in species A is faster than the transport rate in species B.
The myosin II step size in species A is larger than the step size in species B.
The myosin II transport rate in species A is slower than the transport rate in species B.
A.The myosin II in species A has a higher affinity for ATP than does myosin II in species B.
B.The myosin II step size in species B is larger than the step size in species A.
C.The myosin II overall transport rate in species A is faster than the transport rate in species B.
D.The myosin II step size in species A is larger than the step size in species B.
E.The myosin II transport rate in species A is slower than the transport rate in species B.
Explanation / Answer
The correct answer is : D.The myosin II step size in species A is larger than the step size in species B.
Reason: The step size is directly proportional to the neck length of a myosin II molecule.Higher neck length means higher step size and vice versa.Since species A has a longer neck than neck length of a myosin II homolog in species B, the myosin II step size in species A is larger than the step size in species B.
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