Question

Types of proteins of a myofiber:
a. contractile
b. regulatory
c. elastic

Answer 1

The types of proteins found in a myofiber include contractile, regulatory, and elastic proteins.

Step-by-step explanation:

The proteins found in a myofiber can be categorized into three types:

1. Contractile proteins: These are responsible for the actual contraction (shortening) of the muscle. They include the protein actin and the protein myosin.
2. Regulatory proteins: These control the cross-bridge formation between actin and myosin. Examples of regulatory proteins are troponin and tropomyosin.
3. Elastic proteins: These provide elasticity and help the muscle return to its original shape after contraction. An example of an elastic protein is titin.