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12 notecards = 3 pages (4 cards per page)

Viewing:

chapter 16 q & a

front 1

The leading and the lagging strands differ in that

back 1

the leading strand is synthesized in the same direction as the movement of the replication fork, and the lagging strand is synthesized in the opposite direction.

front 2

A new DNA strand elongates only in the 5' to 3' direction because

back 2

DNA polymerase can only add nucleotides to the free 3' end.

front 3

What is the function of topoisomerase?

back 3

relieving strain in the DNA ahead of the replication fork

front 4

What is the role of DNA ligase in the elongation of the lagging strand during DNA replication?

back 4

It joins Okazaki fragments together.

front 5

Which of the following help(s) to hold the DNA strands apart while they are being replicated?

back 5

single-strand binding proteins

front 6

Which of the following would you expect of a eukaryote lacking telomerase?

back 6

a reduction in chromosome length in gametes

front 7

Which of the enzymes removes the RNA nucleotides from the primer and adds equivalent DNA nucleotides to the 3' end of Okazaki fragments?

back 7

IV DNA polymerase I

front 8

Which of the enzymes covalently connects segments of DNA?

back 8

I helicase

front 9

Which of the following sets of materials are required by both eukaryotes and prokaryotes for replication?

back 9

double-stranded DNA, four kinds of dNTPs, primers, origins

front 10

In a linear eukaryotic chromatin sample, which of the following strands is looped into domains by scaffolding?

back 10

the 30-nm chromatin fiber

front 11

Which of the following statements describes the eukaryotic chromosome?

back 11

It consists of a single linear molecule of double-stranded DNA plus proteins.

front 12

Which of the following statements describes chromatin?***

back 12

Heterochromatin is highly condensed, whereas euchromatin is less compact.