Question

which of the following is an example of a dehydration reaction? a group of enzymes \cut\ a mutated protein into smaller molecules, preventing it from harming the cell. amylose, a polysaccharide, is broken down by amylase, an enzyme found in your saliva. casein, a type of protein found in milk, is broken down into amino acids by enzymes in the digestive tract. dna molecules are replicated in a cell by building new dna molecules from nucleotides. submit request answer part d once you eat a cookie, enzymes in your digestive tract begin to break down the cookie into smaller molecules. which two statements are true regarding this process? hydrolysis reactions are breaking the macromolecules in the cookie down into smaller molecules. dehydration reactions are breaking the macromolecules in the cookie down into smaller molecules. water is released during the reactions that break the macromolecules in the cookie down into smaller molecules. water is required for the reactions that break the macromolecules in the cookie down into smaller molecules.

Explanation:

Dehydration reactions involve the loss of water to build larger molecules, while hydrolysis reactions use water to break down larger molecules into smaller ones. For the first - part, DNA replication from nucleotides is a dehydration reaction as it builds a larger molecule (DNA) with the loss of water. For the second - part, the breakdown of macromolecules in the cookie is a hydrolysis reaction which requires water.

Answer:

First part: DNA molecules are replicated in a cell by building new DNA molecules from nucleotides.
Second part: Hydrolysis reactions are breaking the macromolecules in the cookie down into smaller molecules; Water is required for the reactions that break the macromolecules in the cookie down into smaller molecules.