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28 August, 20:41

Which two statements are true about dehydration synthesis?

A. An OH group from one component and an H atom from the other form a water molecule.

B. Polymers are broken down into shorter chains or monomers.

C. Monomers or polymers are joined to form longer chains.

D. A molecule of water is consumed.

E. Its atoms are added to a bond, putting an OH group on one end and a hydrogen atom on the other.

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  1. 28 August, 22:26
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    A. An OH group from one component and an H atom from the other form a water molecule.

    C. Monomers or polymers are joined to form longer chains.

    Explanation:

    Dehydration reactions are the ones in which a water molecule is released during the formation of a covalent bond. Since these are "synthesis" reactions, complex molecules are formed from the simpler monomers. Therefore, dehydration synthesis refers to the reactions that form complex polymers by joining the monomers together.

    For example, when a peptide bond is formed between two amino acids, OH group from one amino acid and "H" from the other amino acid join together and are released in the form of "H2O". A covalent bond is formed between the two amino acids. many amino acids are joined together in this way to form long polypeptide chains.
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