mod 7 Regulating Gene Expression

Question 1

The coding sections of eukaryotic genes are called…

a) exons and introns
b) introns
c) the promotor, exons and introns
d) exons

Answer 1

d) exons

Question 2

A eukaryotic gene typically has all of the following features except…

a) a promoter
b) an operator
c) introns
d) and enhancer

Answer 2

b) an operator

Question 3

mutations in the BRCA1 are most associated with which types of cancer

a) breast
b) prostate
c) esophageal
d) colon

Answer 3

a) breast

Question 4

with regards to sickle cell anemia, which of the following is correct?

a) heterozygous carriers of the sickle cell allele are protected from malaria
b) sickle cell anemia causes the spleen to become sickle shaped
c) the sickle cell anemia gene is inherited in a sex linked manner
d) sickle cell anemia affects the shape of the white blood cells.

Answer 4

a) heterozygous carriers of the sickle cell allele are protected from malaria

Question 5

with regards to the lac operon, which of the following statements is correct?

a) glucose suppresses transcription of the lac genes in the lax operon
b) lactose suppresses transcription of the lac genes in the lac operon
c) both glucose and lactose suppress transcription of the lac genes in the lac operon
d) glucose induces transcription of the lac genes in the lax operon

Answer 5

a) glucose suppresses transcription of the lac genes in the lax operon

Question 6

Which RNA takes amino acids to the ribosomes for translation?

a) tRNA
b) mRNA
c) siRNA
d) rRNA

Answer 6

d) rRNA