DNA Replication Vocab

Question 1

semi-conservative

Answer 1

2 parental strands make a copy of itself. One parental and one new strand to each of the new cells

Question 2

conservative

Answer 2

parental strands direct synthesis of complementary new strands. Full conserved in the new cell

Question 3

dispersive

Answer 3

material in 2 parental strands is dispersed randomly between the 2 daughter cells. Mix of both parent and complementary DNA in double strands of each daughter cell

Question 4

Anti-parallel

Answer 4

2 strands of parent DNA are parallel, but opposite to each other

Question 5

origin of replication

Answer 5

place where complimentary new strands are DNA parental strands

Question 6

replication fork

Answer 6

open site formed from helicase unwinding parent DNA strands.

Question 7

helicase

Answer 7

unwind DNA strands into replication fork

Question 8

single strand binding proteins

Answer 8

proteins that Keep DNA from rebonding

Question 9

DNA polymerase III (DNAP III)

Answer 9

attaches complementary nucleotides to the original parental strand

Question 10

leading strand

Answer 10

synthesized in one continuous strand

Question 11

lagging strand

Answer 11

lags leading strand due to chunking of DNA

Question 12

5’

Answer 12

phosphate end of parent DNA. end to DNA synthesis of the parent strand

Question 13

3’

Answer 13

hydroxyl end of parental DNA, beginning of DNA synthesis of the parent strand.

Question 14

Okazaki fragments

Answer 14

segments from lagging strands

Question 15

DNA ligase

Answer 15

joins okazaki fragments to form a continuous strand of DNA

Question 16

DNA Polymerase I (DNAP I)

Answer 16

enzyme that replaces RNA nucleotides of RNA primer

Question 17

telomeres

Answer 17

repeating units of short nucleotide sequences that do not code for genes

Question 18

Telomerase

Answer 18

enzyme that adds the telomeres

Question 19

nuclease

Answer 19

removes segments of nucleotides so that DNA polymerase can attach correct nucleotide