chapter 7 terms

Question 1

nucleoside

Answer 1

a molecule composed of a nitrogen base bound to a sugar molecule

Question 2

nucleotide

Answer 2

a molecule composed of a nitrogen base, a sugar, and a phosphate group, the basic building block of nucleic acids

Question 3

conservative replication

Answer 3

a model of DNA replication (disproved) which predicts that hald of the daughter DNA molcules should have both strands composed of newly polymerized nucleotides

Question 4

semi-conservative replication

Answer 4

a model of DNA replication (current) in which each strand of parental DNA serves as a template for new DNA synthesis resulting in both daughter molecules being composed of one parental and one newly synthesized strand

Question 5

dispersive replication

Answer 5

a model of DNA replication (disproved) which predicts the more or less random interspersion of parental and newly synthesized segments in daughter DNA molecules

Question 6

origin

Answer 6

the start point of DNA replication

Question 7

REPLICATION FORK

Answer 7

The point at which the two strand of DNA are seperated to allow for the replication of each strand

Question 8

leading strand

Answer 8

the DNA strand that is being synthesized in the same direction as the replication fork is proceeding

Question 9

lagging strand

Answer 9

the DNA strand that is being desynthesized in the opposite direction as the replication fork is proceeding

Question 10

okazaki fragments

Answer 10

a small segment of single stranded DNA, with a RNA primer at the 5’ terminus, synthesized as part of the lagging strand during DNA repolication

Question 11

telomere

Answer 11

the tip/end of a linear chromosome