Answer: A) The 'lub' sound is caused as the atrioventricular valves close.
Explanation:
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The answer is A it's the action of purifying water
Answer:
Apoprotein
Explanation:
A peptide is a molecule formed as a result of the linking of amino acid molecules by a peptide bond. The peptide is the backbone of polypeptides and subsequently, protein molecules. Enzymes are proteinous molecules that serve as biological catalysts. The prosthetic group of a protein/enzyme is a metallic attachment to the protein, which plays roles that are vital to its functioning.
However, when the peptide portion of a protein molecule lack its prosthetic group, the protein is called an APOPROTEIN.
Answer: Eagles mate sexually.
Explanation: Typically the male eagle mounts and humps the female eagle.
