Answer:
They are all built of chemically linked monomers.
What substances are involved in controlling the production of sperm and eggs in humans? Hormones.
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<span>Intrinsic factor is a glycoprotein principally secreted by the parietal cells of the stomach. This secretion is needed to produce mature erythrocytes. Its secretion is governed by the same biochemical processes that regulate acid secretion and its action is to assist in the absorption of vitamin B12.</span>
Activation energy - is the minimum quantity of energy that the reacting species must possess in order to undergo a specified reaction.