Chap25, Chapter 25
1. The effects of mutation are minimized by the fact that
A. there are only three termination codons.
B. DNA is chemically similar to RNA.
C. chemically similar amino acids are represented by similar codons.
D. codons ar
Chap28, Chapter 28
1. Which of the following is not generally a way to control the activity
of a positive regulatory transcription factor?
A. binding of an inhibitor that affects its ability to bind to DNA
B. synthesis of protein in a spec
Chap17, Chapter 17
1. How are the reproductive cycles of retroviruses and retrotransposons different?
A. Retrotransposons can integrate into a host chromosome.
B. The retroviral genome must be reverse-transcribed to DNA.
C. Only retrotrans
2Chap12, Chapter 12
1. A replicon
A. may or may not have an origin.
B. must include the gene for the protein that regulates initiation of
C. must fire only once during the cell cycle.
D. must have a terminus.
E. is trans-actin
Chap20, Chapter 20
1. One major difference between bacterial and eukaryotic RNA polymerase is that
A. prokaryotes have several RNA polymerases.
B. eukaryotic RNA polymerase can polymerize RNA in the 3 to 5 direction.
C. prokaryotic RNA pol
Chap27, Chapter 27
1. A temperate phage is defined as
A. being in an active lytic cycle.
B. having mutations that reduce its virulence.
C. being a particle outside a host cell.
D. being capable of lysogeny.
E. having mutations that prevent
Chap15, Chapter 15
1. Which of the following is not a function of homologous
A. ensuring chromosome segregation
B. integrating phage genomes into bacterial chromosomes
C. in mitosis, restarting replication that has stalled a
Chap26, Chapter 26
1. A gene that produces a protein that influences the expression of other genes is
specifically called a(n)
B. structural gene.
D. regulator gene.
E. constitutive gene.
2. A re
Chap29, Chapter 29
1. Which of the following is not considered a type of structure that
may sustain epigenetic effects?
A. a protein aggregate that controls the conformation of new subunits
as they are synthesized
B. a proteinaceous struct
Chap21, Chapter 21
1. A eukaryotic hnRNP may not include
A. proteins for RNA processing.
C. packaging proteins.
D. RNA polymerase.
E. proteins for export of RNA from the nucleus.
2. One major function of the 5 cap
Chap19, Chapter 19
1. Transcription starts when RNA polymerase binds to the
A. transcription unit.
B. coding strand.
D. transcription bubble.
E. nontemplate strand.
2. The catalytic center of the eubacterial RN
Chap30, Chapter 30
RNA generally functions as a regulator by
base-pairing with a single-stranded region.
influencing ribosomal activity.
recruiting proteins to gene promoters.
catalyzing biochemical reactions.
Chap23, Chapter 23
1. What is the function of RNase P?
A. It splices group I introns.
B. It cleaves precursor rRNAs into separate rRNAs.
C. It catalyzes the formation of peptide bonds.
D. It cleaves a section from precursor tRNAs.
E. It pa
Chap18, Chapter 18
1. MAMPs trigger innate immune responses by binding to
2. The _ and _ of a particular B cell are identical.
A. BCR; TCR
B. BCR; antibody
Chap24, Chapter 24
1. The ribosomal E site
A. binds aminoacyl-tRNA.
B. binds the peptidyl-tRNA.
C. binds the ShineDalgarno sequence.
D. transiently binds deacylated tRNA.
E. binds the mRNA start codon.
2. The lowest rate of
Chap13, Chapter 13
1. A cell that carries a mutation that allows it to complete the current
round of replication, but not to initiate another round, is called a(n)
Chap22, Chapter 22
1. An mRNA may not contain information for
A. the frequency of its own transcription.
B. the frequency of its own translation.
C. where in the cell it will be translated.
D. how long it may be translated.