BIL 250 Chapter Notes - Chapter 5: Stem-Loop, Ribosomal Rna, Peptide
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Related Questions
Which type of RNA is unique to eukaryotes?
mRNA | ||
rRNA | ||
tRNA | ||
snRNA | ||
Its a trick, all cells have all four types of RNA. |
1 points
QUESTION 2
The region of DNA to which RNA polymerase binds to initiate transcription is the:
origin | ||
promoter | ||
enhancer | ||
none of the above are correct |
1 points
QUESTION 3
Holoenzyme:
is RNA polymerase core enzyme. | ||
is sigma factor. | ||
is core plus sigma factor. | ||
none of the above are correct. |
1 points
QUESTION 4
Which of these is formed FIRST when RNA polymerase binds to a promoter?
The closed promoter complex | ||
The open promoter complex | ||
A rho-independent terminator | ||
none of the above are correct. |
1 points
QUESTION 5
A hairpin loop followed by a run of Us:
is the sequence formed in the sense strand of a gene using a rho-independent terminator. | ||
is the sequence recognized by the rho protein. | ||
is the structure formed in RNA that causes rho-independent termination. | ||
is formed immediately after the open promoter complex is formed. |
1 points
QUESTION 6
RNA polymerase:
reads the template strand of the DNA in the 3' to 5' direction. | ||
synthesizes the RNA in the 5' to 3' direction. | ||
can begin transcription without a primer. | ||
all of the above are correct. |
1 points
QUESTION 7
Which of the following statements is FALSE?
Bacteria like E. coli have only one type of sigma factor. | ||
RNA polymerase has no proofreading activity. | ||
The promoter of a gene is upstream of the RNA-coding region. | ||
Bacterial transcriptional terminators are copied into RNA to cause termination. |
1 points
QUESTION 8
If the template strand of a gene has the sequence 5' ATGCGAT 3', then:
the RNA produced will have the sequence 5' AUGCGAU 3'. | ||
the RNA produced will have the sequence 5' UAGCGUA 3'. | ||
the RNA produced will have the sequence 5' AUCGCAU 3'. | ||
None of the above are correct. |
1 points
QUESTION 9
The sense strand:
is the lagging strand | ||
is also the template strand. | ||
always goes left to right. | ||
none of the above are correct. |
1 points
QUESTION 10
Which of these is transcribed but not translated?
mRNA | ||
tRNA | ||
rRNA | ||
all of the above | ||
tRNA and rRNA are transcribed but not translated. |
please help i am a bit confused
Gene ExpressionQuestions
Question 1
#1) Match the following reactions to the correct step of proteinsynthesis by ribosomes.
___ Hydrolysis of GTP and disassembly of the translationcomplex.
___ binding of initiator aminoacyl-tRNA
___ formation of the peptide bond
___ translocation of ribosome
___ Use of 2 mole-equivalents of ATP and attachment of an aminoacid to a transfer RNA molecule
Answer Choices for Number #1
A. initiation step
B. elongation step
C. termination step
D. aminoacyl-tRNA synthetase reaction
Question 2
#2) Mark which of the following are needed for the synthesis ofRNA by RNA polymerase:
___ primer
___ ATP, CTP, GTP, UTP
___ dATP, dCTP, dGTP, dTTP
___ template
Question 3
#3) Mark which of the following are properties of a bacteria(prokaryotic) messenger RNA:
___ | It has a cap at the 5'-end. | |
___ | It has a poly-A tail at the 3'-end. | |
___ | It has a 5'-untranslated region (UTR). | |
___ | It has a 3'-untranslated (UTR) region. |
Question 4
#4) Match the following RNA molecules to their respectivefunctions in the cell.
___ transfer RNA
___ ribosomal RNA
___ messenger RNA
___ small nuclear RNA (snRNA)
Answer Choices for Number #4
A. This RNA serves as the template for protein synthesis.
B. This molecule is a molecular component of ribosomes.
C. This molecule is a component of spliceosomes and serves torecognize the exon-intron junctions
D. This RNA molecule is delivers the amino acid to the ribosome andit recognizes the appropriate codons with its anticodon loop.