Exam 11: DNA Biology

A) receiving a new tRNA with the correct amino acid.
B) holding a polypeptide as amino acids are added.
C) attaching the small subunits of rRNA to the large subunit.
D) releasing the completed polypeptide.
E) processing the rRNA.

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A) transcription of the lactose metabolizing genes, even when lactose is absent
B) no transcription of the lactose metabolizing genes, even when lactose is present
C) binding of the repressor protein to the operator even when lactose is present
D) binding of the repressor protein to the regulatory gene in both the presence and absence of lactose
E) no transcription of the regulatory gene, even in the presence of lactose

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A) transcription, mRNA processing, and termination.
B) DNA replication, transcription, and termination.
C) initiation, transcription, elongation cycle, and termination.
D) initiation, elongation cycle, and termination.
E) initiation, transcription, mRNA processing, and termination.

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A) DNA polymerase
B) RNA polymerase
C) RNA ligase
D) helicase
E) DNA ligase

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A) chromatin condensation
B) mRNA translation
C) DNA transcription
D) mRNA processing
E) transcription factor binding

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A) T; A
B) A; G
C) A; A
D) G; T
E) A; T

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A) AUGCGAUUA.
B) AUUAGCGUA.
C) UACGCUAAU.
D) UAAUCGCAU.
E) ATGCGATTA.

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A) 2
B) 4
C) 8
D) 16
E) 64

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A) A; G; T; C
B) A; T; G; C
C) A; C; G; T
D) C; T; G; A
E) G; U; A; C

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A) hydrophobic interactions
B) intrastrand folding
C) ionic bonds
D) phosphodiester bonds
E) hydrogen bonds

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A) unwinding, complementary base pairing, and joining.
B) base doubling, unwinding, and joining.
C) complementary base pairing, transcription, and translation.
D) unwinding, transcription, and translation.
E) unwinding, base doubling, and base pairing.

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A) compacting the chromatin of one of their X chromosomes allows them to inactivate it and produce the same amount of gene product as a male.
B) unpacking one of their X chromosomes allows them to produce more gene product than a male.
C) compacting the chromatin in one of their X chromosomes allows them to conserve histone proteins.
D) compacting the chromatin in one of their X chromosomes allows them to produce more gene product than a male from the other X chromosome.
E) unpacking one of their X chromosomes allows them to choose which allele they wish to express, which a male cannot do.

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A) normal replication, but gaps remain in the sugar-phosphate DNA backbone.
B) failure to remove introns from the primary mRNA.
C) incompletely processed primary mRNA that does not get translated properly.
D) translation to initiate normally, but fail to proceed to elongation.
E) DNA strands to separate normally, but fail to join nucleotides in the growing nucleotide chain.

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A) one of the two resulting DNA molecules is new.
B) the two resulting DNA molecules each have one new DNA strand and one old strand from the original DNA molecule.
C) both of the resulting DNA molecules are composed of new strands of nucleotides.
D) no extra nucleotides are incorporated into the replicated DNA molecules.
E) the sequence of nucleotides in one strand is conserved, whereas the new DNA molecule consists of a unique sequence of nucleotides

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