<span>Receptors in muscles provide the brain with information about body position and movement. The brain controls the contraction of skeletal muscle. The nervoussystem regulates the speed at which food moves through the digestive tract.</span>
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Answer: how a virus differs from a cell...
It doesn’t contain any kind of cytoplasm, cell wall, cell membrane, ribosome or mitochondrion.
It doesn’t have any sort of metabolic enzyme of its own. So, no nutrition system is seen.
It can’t reproduce itself, without any help of the host living cell.
It can be crystallized, centrifuged or diffused.
It doesn’t have any sort of somatic development.
Chemically, its just a fusion of protein and nucleic acid. So, this characters differ a Virus from a living cell.
Explanation:
For the first question the answer is D
For the second question the answer is B
I believe that it is a reverse fault
