Chapter 12: DNA Carrier of Genetic Info

The information carried by DNA is incorporated in a code specified by the:

specific nucleotide sequence of the DNA molecule.

The function(s) of DNA polymerase include(s) which of the following?

DNA synthesis, DNA proofreading, removal of RNA primers and replacement with DNA.

The final product of DNA replication is:

two DNA molecules, each of which contains one new and one old DNA strand.

Use the figure to answer the corresponding question.nar0011 The portion of the molecule in box 5 is: a protein. a pyrimidine. a phosphate. a nucleotide. a hydrogen bond.

a phosphate

Which of the following adds new nucleotides to a growing DNA chain?

DNA polymerase

Why is DNA able to store large amounts of information?

Its nucleotides can be arranged in a large number of possible sequences.

In DNA replication, the lagging strand:

is synthesized as a series of Okazaki fragments.

The enzyme DNA ligase is responsible for:

linking short DNA segments.

The mechanism of DNA replication is:

semiconservative

The two molecules that alternate to form the backbone of a polynucleotide chain are:

sugar and phosphate.

What is the complement DNA strand to 5'-ATTCGGTGA-3'

3' -TAAGCCACT- 5'

Which of the following nucleotide sequences represents the complement to the DNA strand 5' − AGATCCG- 3'?

3' − TCTAGGC- 5'

Which of the following is NOT a criterion for an organism's genetic material?

The genetic material must be dynamic, changing rapidly in response to changes in the enviornment

The 5' end of each Okazaki fragment begins with:

a separate RNA primer.

The DNA strand that is replicated smoothly and continuously is called the:

leading strand.

Why does DNA synthesis only proceed in the 5' to 3' direction?

Because DNA polymerases can only add nucleotides to the 3' end of a polynucleotide strand.

Which of the following best describes semiconservative replication?

A DNA molecule consists of one parental strand and one new strand

______ produces short sequences of RNA, which allows polymerase to synthesize a new strand of DNA.

DNA primase

Use the figure to answer the corresponding question. The portion of the molecule in box 3 of the figure is:nar0011(1) a purine. a pyrimidine. a protein. a sugar. a nucleotide.

a purine.

Use the figure to answer the corresponding question. nar0021 The correct designation for the DNA strand labeled C is: 1.a strand serving as a template. 2. 3'. 3. the leading strand. 4. Okazaki fragments. 5. polymerase.

a strand serving as a template