Answer:
<em><u>D. Cytoskeleton</u></em>
Explanation:
It is really none of these answers. The correct answer would be a microtubule which is a component of the cytoskeleton which is in the cytoplasm.
The Cell Walls are only in plant cells so that won't work. So, A wouldn't work.
Chromosomes are the things that both your parents give you as genes. They have nothing to do with keeping the structure of the cell alright.
Cytoplasm cannot be a answer choice because, the thing is in it but, it doesn't do anything with it. So C wouldn't work either
The correct answer is microtubule however, it is a component of cytoskeleton so therefore, that is your answer.
<em><u>Reference the picture below:</u></em>
Answer:
Skeletal muscle tissue is composed of cells called muscle fibers. When the nervous system signal reaches the neuromuscular junction a chemical message is released by the motor neuron. The chemical message, a neurotransmitter called acetylcholine, binds to receptors on the outside of the muscle fiber.
<span>The single most abundant chemical substance of the body, accounting for 60% to 80% of body weight, is "Water"
Hope this helps!</span>
I would need the picture to know how to answer this question