BISC 260 Lecture Notes - Lecture 13: Cytochrome C Oxidase Subunit Ii, Archaea, Polysome
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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
Fill in the blank. Elongation during translation does NOT involve ____________.
Question 16 options:
the translation of codons according to the genetic code | |
the formation of bonds catalyzed by the ribosome | |
complementary base pairing between RNA molecules | |
amino acids being linked together in a polypeptide | |
reading the DNA template 3' to 5' |
For a given gene, what establishes the reading frame for translation?
Question 17 options:
the location of the enhancer relative to the gene | |
the first three nucleotides at the 5' end of the mRNA | |
the first three nucleotides at the 3' end of the mRNA | |
the start codon in the mRNA | |
the location of the promoter relative to the gene |
Which of the following is the LEAST likely direct consequence of a substitution mutation?
Question 18 options:
changing the length of a protein coded for by a gene | |
changing one amino acid in a protein | |
creating a stop codon | |
eliminating a start codon | |
changing the length of the DNA molecule containing a gene |
Suppose that the pre-mRNA transcript from a eukaryotic gene is 30,000 nucleotides long, and the gene codes for a sequence of 300 amino acids. What is the best explanation for the relationship between these numbers?
Question 19 options:
only the first 900 nucleotides of the pre-mRNA transcript are translated | |
it takes 100 nucleotides to specify a single amino acid | |
300 of the nucleotides in the transcript are important, and the rest are "junk" | |
only the last 900 nucleotides of the pre-mRNA transcript are translated | |
large portions of pre-mRNA transcripts are cut out during RNA processing |
Suppose an individual is born into a population with a novel mutation. Is the new mutation an evolutionary change, and why?
Question 20 options:
no, because it is not a big enough change to count | |
yes, because new mutations are always adaptive | |
yes, because the appearance of a new genetic variant is a genetic change in a population | |
no, because not enough individuals have the mutation for it to matter | |
no, because most mutations are not adaptive |