Active sites become exposed when calcium ions bind to A) ...

[lunatika]

Active sites become exposed when calcium ions bind to
 A) tropomyosin.
  B) actin.
  C) myosin.
  D) troponin.
  E) calcium channels.

Question 2

Communication between axons and muscle fibers occurs at specialized synapses called
 A) nervous units.
  B) synaptic terminals.
  C) motor end plates.
  D) motor units.
  E) neuromuscular junctions.

[Amiracle]

Answer to Question 1

D

Answer to Question 2

E

[lunatika]

TYSM

[ttt030911]

Thanks for the timely response, appreciate it