Answer:
A
Explanation:
ECM proteins are significant in the development of the extracellular matrix which is responsible for supporting and connecting cells together in the formation of tissues. The extracellular matrix is also a major component of connective tissue that is composed of collagen fibers connecting tissues. Mutations of these proteins will result in connective tissue disorders such as scurvy, sarcomas, systemic lupus erythematosus (SLE) and etcetera.
If you are learning about fast-twitch vs slow-twitch muscle fibers, then the answer would be fast-twitch muscle fibers. Fast-twitch muscle fibers are fibers used for powerful bursts of speed like sprinting, while slow-twitch muscle fibers are used for endurance-based activities like cross country running or marathons.
<span>The possible effect of muscle fatigue is being experienced when muscles are unable to generate force.
This occurs when muscle ATP is being in the process of metabolism of biomolecules. For example sugar and fats.
ATP generates muscle contraction. Muscle fatigue occurs when ATP is being depleted and results in strenuous exercise.
There is also lactic acid accumulation and oxygen depletion.</span>
