MODULE 1 MULTIPLE CHOICE QUESTIONS
Problem 1: Complementary bases
For the DNA strand 5'-TACGATCATAT-3' the correct complementary DNA strand is:
A 3'-TACGATCATAT-5'
B 3'-ATGCTAGTATA-5'
C 3'-AUGCUAGUAUA-5'
D 3'-GCATATACGCG-5'
E 3'-TATACTAGCAT-5'
Problem 2: The replication fork
In this diagram of the process of DNA replication at a replication
fork, the strand labeled B is the:
A template strand
B lagging strand
C leading strand
D Okazaki fragment
E RNA primer
Problem 3: The replication fork
In this diagram of the process of DNA replication at a replication
fork, the newly synthesized DNA strand labeled C is the:
A coding strand
B parental DNA
C leading strand
D lagging strand
Problem 4: More on the replication fork
In this diagram of the process of DNA replication at a replication
fork, the black boxes labeled D and E are:
A RNA primers
B DNA template strands
C Okazaki fragments
D DNA polymerase
E Newly synthesized DNA strand
Problem 5: Problems on transcription
Three types of RNA involved in comprising the structural and functional core for protein synthesis, serving
as a template for translation, and transporting amino acid, respectively, are:
A mRNA, tRNA, rRNA
B rRNA, tRNA, mRNA
C tRNA, mRNA, rRNA
D tRNA, rRNA, mRNA
E rRNA, mRNA ,tRNA
Problem 6: Protein amino acids from translated mRNA
A messenger acid is 336 nucleotides long, including the initiator and termination codons. The number of
amino acids in the protein translated from this mRNA is:
A 999
B 630
C 330
D 111
E 110
Problem 7: mRNA and protein coding
Under conditions where methionine must be the first amino acid, what protein would be
coded for by the following mRNA?
5'-CCUCAUAUGCGCCAUUAUAAGUGACACACA-3'
A.
B.
C.
D.
E.
pro his met arg his tyr lys cys his thr
met arg his tyr lys cys his thr
met arg his tyr lys
met pro his met arg his tyr lys cys his thr
arg his ser glu tyr tyr arg leu tyr ser
Problem 7: mRNA polypeptide code
Which mRNA codes for the following polypeptide?
met arg ser leu glu
A.
B.
C.
D.
E.
3'-AUGCGUAGCUUGGAGUGA-5'
3'-AGUGAGGUUCGAUGCGUA-5'
5'-AUGCGUAGCUUGGAGUGG-3'
1'-AUGCGUAGCUUGGAGUGA-3'
3'-AUGCGUAGCUUGGAGUGA-1'
Problem 8: Codon-anticodon base pairing
With what mRNA codon would the tRNA in the diagram be able to
form a codon-anticodon base pairing interaction?
A.
B.
C.
D.
E.
3'-AUG-5'
3'-GUA-5'
3'-CAU-5'
3'-UAC-5'
3'-UAG-5'