The thin filaments and thick filaments and their associated proteins are the key functional components of the sarcomere. It is important to be able to identify these components in order to understand their roles in muscle contraction.

True or False

True.

Explanation:

The thin filaments and thick filaments are the most important structural parts of the sarcomere in muscle contraction. When a muscle needs to be contracted, this filaments are the ones that make it happen, they strech or reuce their large (depending on the movement)

Their associated proteins help to give the instriction for the contraction, such as very important minerals involved such as the calcium.

c. will be your answer sorry if im wrong tho

answer: sophie's total body fat is 30%, which places her in the healthy body fat range is incorrect hence false

explanation: there are two types of fat one is white that is the abnormal fat which is found in various parts of the body e.g. under your arms, belly, thighs, buttocks, that’s when it becomes abnormal. there is also a type of fat that is called brown fat which directs the metabolism of white fat so the more brown fat you have the better. the recommended body fat composition is 23% to 25%   for women