Which of the following statements about muscle contraction is false?
A. Actin and myosin filaments shorten during
muscle contraction.
B. Sarcomere length is variable in
invertebrates, but uniform in vertebrates.
C. Longer sarcomeres allow for a greater
degree of shortening.
D. Actin and myosin filaments overlap more
when a muscle is contracted than when it is
relaxed.
E. Rapidly contracting muscles express
myosin molecules that have higher rates of
ATP hydrolysis.
A
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