Answer: The myelinated nerve fibres are enveloped with Schwann cells, it form a myelin sheath around the axon.
Unmyelinated nerve fibres is enveloped by a Schwann cell that doesn't form a myelin sheath around the axon, and found in autonomous and the somatic neural systems. Sympathetic Nervous system is part of Autonomous Nervous system.
Explanation:
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Answer:
Proteins
Explanation:
Generally just a guess so
<h2>Answer:</h2>
Option C is correct.
C. lower the activation energy so the reaction rate will increase
<h2>Explanation:</h2>
Enzymes are protein molecules in cells which work as catalysts. Enzymes speed up chemical reactions in the body, but do not get used up in the process. Almost all biochemical reactions in living things need enzymes. With an enzyme, chemical reactions go much faster than they would without the enzyme.
Answer:
D. Thr availability of safe places to rest
Explanation:
Thats like saying people could die because they don't have a place to sleep
