Chapter 9 - From DNA To Protein

Question 1

A chromosome contains many different gene regions that are transcribed into different ______________.

a. proteins
b. polypeptides
c. RNAs
d. a and b

Answer 1

c. RNAs

Question 2

A binding site for RNA polymerase is called a _______________.

a. gene
b. promoter
c. codon
d. protein

Answer 2

b. promoter

Question 3

Energy that drives the transcription is provided mainly by __________________.

a. ATP
b. RNA nucleotides
c. GTP
d. all are correct

Answer 3

d. all are correct

Question 4

An RNA molecule is typically __________; a DNA molecule is typically _______________.

a. single-stranded; double stranded
b. double- stranded; single-stranded
c. both are single-stranded
d. both are double stranded

Answer 4

a. single-stranded; double stranded

Question 5

RNAs form by ___________; proteins form by ________________.

a. replication; translation
b. translation; transcription
c. transcription; translation
d. replication; transcription

Answer 5

c. transcription; translation

Question 6

Most codons specify a(n) ___________.

a. protein
b. polypeptide
c. amino acid
d. mRNA

Answer 6

c. amino acid

Question 7

Anticodons pair with ___________.

a. mRNA codons
b. DNA codons
c. RNA codons
d. amino acids

Answer 7

a. mRNA codons

Question 8

What is the maximum length of a polypeptide encoded by an mRNA that is 45 nucleotides long?

a. Introns
b. Exons
c. Telomeres
d. Amino acids

Answer 8

a. Introns

Question 9

Where does transcription take place in a typical eukaryotic cell?

a. the nucleus
b. ribosomes
c. the cytoplasm
d. b and c are correct

Answer 9

a. the nucleus

Question 10

Where does translation take place in a typical eukaryotic cell?

a. the nucleus
b. ribosomes
c. the cytoplasm
d. b and c are correct

Answer 10

d. b and c are correct

Question 11

Each amino acid is specified by set of _____________ bases in an mRNA transcript.

a. 3
b. 20
c. 64
d. 120

Answer 11

a. 3

Question 12

_____________ different codons constitute the genetic code.

a. 3
b. 20
c. 64
d. 120

Answer 12

c. 64

Question 13

________ can cause mutations.

a. Replication errors
b. Transposons
c. Ionizing
d. Nonionizing radiation
e. b and c are correct
f. all of the above

Answer 13

f. all of the above

Question 14

Match the term with the best description.

\_\_\_ genetic message
\_\_\_ promoter 
\_\_\_ polyseme
\_\_\_ exon
\_\_\_ genetic code 
\_\_\_ intron
\_\_\_ transposable element 

a. protein-coding segment
b. gets around
c. read as Nase triplets
d. removed before translation
e. occurs only in groups
f. complete set of 64 codons
g. binding site for RNA polymerase

Answer 14

Match the term with the best description.

(c) genetic message
(g) promoter
(e) polyseme
(a) exon
(f) genetic code
(d) intron
(b) transposable element

a. protein-coding segment
b. gets around
c. read as Nase triplets
d. removed before translation
e. occurs only in groups
f. complete set of 64 codons
g. binding site for RNA polymerase