1

Question 1

has a free 5’-
phosphate group at one end and a free 3’-OH group at the other end

Answer 1

nucleic acid polymer

Question 2

double helix proposed by

Answer 2

james watson and francis crick

Question 3

Hydrogen bonds between
base pairs are broken by the enzyme _____ and DNA molecule unzips.

Answer 3

Helicase

Question 4

occur when copying errors cause a change in the sequence of
DNA nucleotide bases

Answer 4

mutations

Question 5

The DNA is only organized into _______ during cell replication

Answer 5

chromosomes

Question 6

Between replications, the DNA is stored in a compact ball called ,

Answer 6

chromatin

Question 7

Between replications, the DNA is stored in a compact ball called chromatin, and is wrapped around proteins called ____ to form nucleosome

Answer 7

histones

Question 8

The process is called ________
because one strand of each daughter DNA comes from the
parent DNA and one strand is new.

Answer 8

semi-conservative replication

Question 9

major component of the ribosomes

Answer 9

rRNA

Question 10

carries info for protein synthesis from the dna in the nucleus to the ribosomes

Answer 10

mRNA

Question 11

brings amino acids to the ribosomes for protein synthesis

Answer 11

tRNA

Question 12

catalyzes the formation of 5’-3’ester bonds of the leading strand.

Answer 12

DNA polymerase

Question 13

The lagging strand, which grows in the 3’-5’ direction, is synthesized in short sections.

Answer 13

ozaki fragments

Question 14

translates the genetic code from the messenger RNA
and brings specific amino acids to the ribosome for protein synthesis

Answer 14

tRNA

Question 15

DNA stores genetic information in
segments called

Answer 15

genes

Question 16

The DNA code is in ______ (short sequences of 3 nucleotides
each)

Answer 16

Triplet Codons

Question 17

a messenger that allowsthe instruction
of DNA to be delivered to the rest of the cell

Answer 17

RNA

Question 18

In RNA,A,C,G,and U are linked by _______
between ribose and phosphate

Answer 18

3’-5’ ester bonds

Question 19

During transcription, ________ moves along the DNA template in the 3’-5’direction to synthesize the corresponding
mRNA
🞂 The mRNA is released at the ______.

Answer 19

RNA polymerase
termination point

Question 20

genes contain ___ codes for proteins

Answer 20

exons

Question 21

genes contain ____ do not code for proteins

Answer 21

introns

Question 22

where the end products speed up or
slow the synthesis of mRNA

Answer 22

feedback control

Question 23

where a high level of a reactant
induces the transcription process to provide the necessary
enzymes for that reactant

Answer 23

enzyme induction