Download Quiz 17 Name: 1. RNA molecules can A) be information carriers B

Quiz 17
Name:_______________________
1. RNA molecules can
A) be information carriers
B) catalyze chemical reactions
C) be carriers of the building blocks for proteins
D) have complex three-dimensional structure
E) all of the above
2. Which of the following is FALSE about RNA molecules?
A) RNA molecules are made of nucleotide molecules
B) Ribonucleic acid differs from deoxyribonucleic acid in having a different sugar and the nucleotide
uracil
C) RNA has a sugar-phosphate backbone
D) a specific tRNA molecule can carry any amino acid
E) RNA in our cells is often single stranded
3. What is the sequence of a polypeptide based on the following mRNA sequence?
5' . . . CUUUCUUAUUGUCUU 3'
A) leu-cys-tyr-ser-phe
B) cyc-phe-tyr-cys-leu
C) phe-leu-ile-met-val
D) leu-pro-asp-lys-gly
E) leu-ser-tyr-cys-leu
4. The mRNA sequence for a certain polypeptide is 5’…GAGCCGUAA…3’. If the last A is changed to
a U via a substitution mutation, what effect will this have on the protein?
A) No change
B) The polypeptide will be longer
C) The polypeptide will undergo a frameshift
D) The polypeptide will be shorter
5. Transcription in eukaryotes requires which of the following in addition to RNA polymerase?
A) snRNA
B) start and stop codons
C) ribosomes and tRNA
D) several transcription factors (TFs)
E) aminoacyl synthetase
6. Which of the following is not involved in mRNA processing?
A) promoter
B) spliceosomes
C) 5' cap and poly (A) tail
D) snRNA
E) exons
7. What are the coding segments (i.e. they are expressed) of a stretch of eukaryotic DNA called?
A) anticodons
B) transposons
C) introns
D) exons
E) codons
8. Which of the following is NOT a function of RNA in an animal cell?
A) carrying amino acids to ribosomes for protein synthesis.
B) serving as a component of ribosomes.
C) acting as the template to create DNA.
D) splicing of pre-mRNA.
E) all of these are functions of RNA.
9. DNA mutations can alter protein function via:
A) Switching one nucleotide for another
B) Inserting an extra nucleotide
C) Deleting an extra nucleotide
D) All of the Above
10. There is a specific Aminoacyl-tRNA synthetase for each of the 20 distinct amino acids
A) TRUE
B) FALSE