The Monroe Doctrine was named after the President that delivered the message to Congress in 1823,but the Doctrine was the brain child of Secretary of State John Quincy Adams.Basically,the Doctrine warned that the United States was no longer to be considered an area open to European influence or colonization.The Us promised not to interfere in the affairs of Europe and Europe would respect that the fact that the Western Hemisphere was closed to colonization and influence by any other power than the Us.
Answer:
B. Free-radical theory
Explanation:
The free radical theory statutes that <em>ageing is the result of the accumulation of the damage to cells and tissues caused by reactive oxygen species</em> as a result of aerobic metabolism.
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Answer: Rough Endoplasmic Reticulum
Explanation:
Rough Endoplasmic Reticulum
The rough endoplasmic reticulum is an organelle with a membrane which has ribosomes attached to it which result to its rough look . It produces polypeptides that travels through the membrane to be further modified .
It exist in the eukaryotic cells and it produces proteins which is the main function.
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The correct answer is : B
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