McGraw-Hill Online Learning Center Test<BLURT>

McGraw-Hill Online Learning Center Test

1. Review the animation and answer the following questions.

An enzyme begins the process of DNA replication by unzipping the two DNA strands. This requires

A. energy.
B. water.
C. breaking of covalent bonds.
D. breaking of hydrogen bonds.

2. After DNA replication, the two resulting molecules are A. different from each other.
B. identical with one molecule having two completely new strands and the other having two completely old strands.
C. identical with each molecule having one new and one old strand.
D. identical with each strand of each molecule being a mix of old and newly synthesized DNA.

3. Which of the following processes in DNA replication does NOT require enzymes? A. The DNA helix will unzip when replication is proceeding.
B. Okasaki fragments are formed when the lagging strand is replicated.
C. A free adenine nucleotide will form hydrogen bonds with a free thymine on one of the DNA strands.
D. A small RNA molecule is synthesized to begin DNA replication.

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