When DNA Replication Begins, ____

question 30

Multiple Choice

When DNA replication begins, ____.

• A)the two DNA strands unwind from each other
• B)the two DNA strands condense
• C)two DNA molecules bond
• D)old DNA strands move to pair with new strands
• E)the sugar-phosphate backbone is degraded

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Definitions:

Hydrolysis

A chemical reaction involving the breaking of a bond in a molecule using water, common in the digestion of nutrients.

Fatty Acids

Long-chain hydrocarbons found in fats and oils, serving as major sources of energy, components of cell membranes, and precursors for bioactive signaling molecules.

Glycerol

A simple polyol compound that forms the backbone of triglycerides, which are the main constituents of body fat in humans and other animals.

Nucleotide

The basic building block of nucleic acids, such as DNA and RNA, consisting of a base (adenine, cytosine, guanine, thymine in DNA; adenine, cytosine, guanine, uracil in RNA), a molecule of sugar (deoxyribose in DNA and ribose in RNA), and a phosphate group.