Physical evidence that supports the sliding filament theory of ...

[sabina]

Physical evidence that supports the sliding filament theory of muscle contraction includes
 A) constant distance between Z lines during contraction.
  B) decreased width of the H band during contraction.
  C) increased width of the I band during contraction.
  D) decreased width of the A band during contraction.
  E) the I band + H band distance is constant during contraction.

Question 2

When calcium ion binds to troponin,
 A) tropomyosin rolls away from the active site.
  B) active sites on the myosin are exposed.
  C) actin heads will bind to myosin.
  D) muscle relaxation occurs.
  E) myosin shortens.

[bimper21]

Answer to Question 1

B

Answer to Question 2

A

[sabina]

TY

[bimper21]

You're welcome