C211 Study Guide questions Final
Exam Questions with Answers
According to the central dogma, what molecule should go into the blank? DNA-->
_________ --> Proteins
A. mtDNA
B. rRNA
C. mRNA
D. tRNA - Answer mRNA
What does it mean when we say the genetic code is redundant?
A. A single codon can specify the addition of more than one amino acid.
B. The genetic code is different for different domains of organisms.
C. The genetic code is universal (the same for all organisms).
D. More than one codon can specify the addition of the same amino acid. -
Answer more than one codon can specify the addition of the same amino acid
The trp repressor blocks transcription of the trp operon when the repressor
_____.
,A.binds to the inducer
B.binds to tryptophan
C.is not bound to tryptophan
D.is not bound to the operator - Answer binds to tryptophan
Transcription factors are
A.RNA sequences that bind to RNA polymerase.
B.DNA sequences that regulate transcription.
C.proteins that bind to the DNA promoter sequence.
D.histone proteins that open up DNA for transcription. - Answer proteins that
bind to the DNA promoter sequence
What would happen initially to cells that lack a functional ubiquitin?
A.Nothing would happen.
B.Transcriptional initiation would increase.
C.Protein degradation would decrease.
,D.Histone modifications would increase. - Answer protein degradation would
decrease
________ is to transcription as ________ are to translation.
A.RNA spliceosome; ribosomes
B.RNA polymerase; ribosomes
C.DNA polymerase; RNA polymerases
D.DNA polymerase; ribosomes - Answer RNA polymerase; ribosomes
A researcher determined that a strain of E. coli is producing a shortened version
of a protein required for glucose metabolism. What type of mutation could be
responsible for this shorter than normal protein?
A.nonsense mutation
B.missense mutation
C.silent mutation
D.sense mutation - Answer nonsense mutation
What proteins influence the ability of RNA polymerase to transcribe genes?
, A.DNA polymerases
B.DNA helicases
C.Transcription factors
D.snRNPs - Answer transcription factors
Future kidney cells and heart cells can differentiate into their respective
specialized cell types because they
A.express a different set of genes during fertilization
B.possess different genes
C.arise from different embryonic stem cells
D.express different genes and utilize different transcription factors during
development - Answer express different genes and utilize different transcription
factors during development
You thinly slice a carrot root and place the slices on a medium containing
nutrients and hormones necessary for plant growth. After a few weeks, you see
that there are many little entire carrot plants growing from the root slices. The
cells in the root can give rise to an entire plant because many plant cells are
Exam Questions with Answers
According to the central dogma, what molecule should go into the blank? DNA-->
_________ --> Proteins
A. mtDNA
B. rRNA
C. mRNA
D. tRNA - Answer mRNA
What does it mean when we say the genetic code is redundant?
A. A single codon can specify the addition of more than one amino acid.
B. The genetic code is different for different domains of organisms.
C. The genetic code is universal (the same for all organisms).
D. More than one codon can specify the addition of the same amino acid. -
Answer more than one codon can specify the addition of the same amino acid
The trp repressor blocks transcription of the trp operon when the repressor
_____.
,A.binds to the inducer
B.binds to tryptophan
C.is not bound to tryptophan
D.is not bound to the operator - Answer binds to tryptophan
Transcription factors are
A.RNA sequences that bind to RNA polymerase.
B.DNA sequences that regulate transcription.
C.proteins that bind to the DNA promoter sequence.
D.histone proteins that open up DNA for transcription. - Answer proteins that
bind to the DNA promoter sequence
What would happen initially to cells that lack a functional ubiquitin?
A.Nothing would happen.
B.Transcriptional initiation would increase.
C.Protein degradation would decrease.
,D.Histone modifications would increase. - Answer protein degradation would
decrease
________ is to transcription as ________ are to translation.
A.RNA spliceosome; ribosomes
B.RNA polymerase; ribosomes
C.DNA polymerase; RNA polymerases
D.DNA polymerase; ribosomes - Answer RNA polymerase; ribosomes
A researcher determined that a strain of E. coli is producing a shortened version
of a protein required for glucose metabolism. What type of mutation could be
responsible for this shorter than normal protein?
A.nonsense mutation
B.missense mutation
C.silent mutation
D.sense mutation - Answer nonsense mutation
What proteins influence the ability of RNA polymerase to transcribe genes?
, A.DNA polymerases
B.DNA helicases
C.Transcription factors
D.snRNPs - Answer transcription factors
Future kidney cells and heart cells can differentiate into their respective
specialized cell types because they
A.express a different set of genes during fertilization
B.possess different genes
C.arise from different embryonic stem cells
D.express different genes and utilize different transcription factors during
development - Answer express different genes and utilize different transcription
factors during development
You thinly slice a carrot root and place the slices on a medium containing
nutrients and hormones necessary for plant growth. After a few weeks, you see
that there are many little entire carrot plants growing from the root slices. The
cells in the root can give rise to an entire plant because many plant cells are
