4

Question 1

Rope like protein covering S1 binding site on actin

Answer 1

Tropomysin

Question 2

Tropin has a conformational change when calcium binds to TnC. Resulting in:

Answer 2

TnC going from loosely bound to tight and the. tnI gets out of the way

Question 3

Slow and fast ______ _________ combine in different ways to elicit different speeds of contraction

Answer 3

Light chains