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slega [8]
3 years ago
8

Why do many diseases such as measles occur only once in a person yet others such as colds occur more than once?

Biology
1 answer:
mezya [45]3 years ago
3 0

Answer:

This happens because of our immune system. Our immune system keep record of every attacking microbe. It contains two type of while blood cells firstly is T cell that respond quickly to the attacking microbe. While secondly B cells that recognize those specific cells and fights them off. In addition to that B cells clones itself as memory cells for that disease and will remains in your body for years

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The true descriptions regarding muscles are; Cardiac muscles and skeletal muscles are striated, heart (cardiac) and digestive (smooth) muscles are involuntary muscles, cardiac muscles work to pump blood. Skeletal muscles are the muscles that attach to the bones and their main function i contracting to facilitate movement of our skeletons. Smooth muscle are found in walls of hollow organs such as the stomach and are stimulated by involuntary action. While the cardiac muscles are found solely in the walls of the heart, they are highly specialized and under the control of of the autonomic nervous system.
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3 years ago
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Question 24(Multiple Choice Worth 2 points)
Mnenie [13.5K]
N = Atomic Number
A = Atomic Mass

Atomic # = Protons/Electrons

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Why does the earth appear from blue space?
8_murik_8 [283]

Answer:When sunlight reaches the water; the water absorbs, lights of all colors in the white light and reflects only blue light. Thus, the earth from space appears blue. If the water absorbs all colors and reflects only yellow, then it would appear yellow.

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3 years ago
What is the role of NADH in cell respiration?​
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2 years ago
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Whiteflies are common pest insects found on cotton, tomato, poinsettia, and many other plants. Nymphs are translucent and mostly
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The hypothesis devised in this study by the researcher is –  

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