Campbell Biology Chapter 16-17

Last update by hturek on 10/21/2014
1409495 People have viewed this Quiz
  • Share

Which of the following is a function of a poly-A signal sequence?



A. It codes for a sequence in eukaryotic transcripts that signals enzymatic cleavage ~1035 nucleotides away.

B. It allows the 3' end of the mRNA to attach to the ribosome.
C. It is a sequence that codes for the hydrolysis of the RNA polymerase.
D. It adds the poly-A tail to the 3' end of the mRNA.
E. It adds a 7-methylguanosine cap to the 3' end of the mRNA.

Answer:
A. It codes for a sequence in eukaryotic transcripts that signals enzymatic cleavage ~1035 nucleotides away.

View Campbell Biology Chapter 16-17 as Flashcard Deck

Related Quiz Content
  • feldman2009

    If proteins were composed of only 12 different kinds of amino acids, what would be the smallest possible codon size in a genetic system with four different nucleotides?



    A. 4 B. 12 C. 2
    D. 3 E. 1
    C. 2
  • feldman2009
    The following questions refer to Figure 17.2, a table of codons.
    A possible sequence of nucleotides in the template strand of DNA that would code for the polypeptide sequence phe-leu-ile-val would be
    A. 5' TTG-CTA-CAG-TAG 3'. B. 3' AAC-GAC-GUC-AUA 5'. C. 3' AAA-GAA-TAA-CAA 5'.
    D. 5' AUG-CTG-CAG-TAT 3'. E. 3' AAA-AAT-ATA-ACA 5'.
    C. 3' AAA-GAA-TAA-CAA 5'.
  • feldman2009
    The following questions refer to Figure 17.2, a table of codons.
    What amino acid sequence will be generated, based on the following mRNA codon sequence?
    5' AUG-UCU-UCG-UUA-UCC-UUG 3'
    A. met-ser-leu-ser-leu-ser B. met-leu-phe-arg-glu-glu C. met-arg-glu-arg-glu-arg D. met-glu-arg-arg-gln-leu E. met-ser-ser-leu-ser-leu
    E. met-ser-ser-leu-ser-leu
  • feldman2009
    Which of the following nucleotide triplets best represents a codon?



    A. a triplet separated spatially from other triplets B. a triplet that has no corresponding amino acid C. a triplet in the same reading frame as an upstream AUG
    D. a sequence in tRNA at the 3' end E. a triplet at the opposite end of tRNA from the attachment site of the amino acid
    C. a triplet in the same reading frame as an upstream AUG
  • feldman2009
    Which of the following is true for both prokaryotic and eukaryotic gene expression?



    A. RNA polymerase binds to the promoter region to begin transcription.
    B. After transcription, a 3' poly-A tail and a 5' cap are added to mRNA. C. Translation of mRNA can begin before transcription is complete. D. mRNA is synthesized in the 3' → 5' direction. E. The mRNA transcript is the exact complement of the gene from which it was copied.
    A. RNA polymerase binds to the promoter region to begin transcription.
  • feldman2009
    In which of the following actions does RNA polymerase differ from DNA polymerase?



    A. RNA polymerase uses RNA as a template, and DNA polymerase uses a DNA template. B. RNA polymerase is much more accurate than DNA polymerase. C. RNA polymerase does not need to separate the two strands of DNA in order to synthesize an RNA copy, whereas DNA polymerase must unwind the double helix before it can replicate the DNA. D. RNA polymerase can initiate RNA synthesis, but DNA polymerase requires a primer to initiate DNA synthesis.
    E. RNA polymerase binds to single-stranded DNA, and DNA polymerase binds to double-stranded DNA.
    D. RNA polymerase can initiate RNA synthesis, but DNA polymerase requires a primer to initiate DNA synthesis.
  • feldman2009
    In which of the following actions does RNA polymerase differ from DNA polymerase?



    A. RNA polymerase uses RNA as a template, and DNA polymerase uses a DNA template. B. RNA polymerase is much more accurate than DNA polymerase. C. RNA polymerase does not need to separate the two strands of DNA in order to synthesize an RNA copy, whereas DNA polymerase must unwind the double helix before it can replicate the DNA. D. RNA polymerase can initiate RNA synthesis, but DNA polymerase requires a primer to initiate DNA synthesis.
    E. RNA polymerase binds to single-stranded DNA, and DNA polymerase binds to double-stranded DNA.
    D. RNA polymerase can initiate RNA synthesis, but DNA polymerase requires a primer to initiate DNA synthesis.
  • feldman2009
    Which of the following statements best describes the termination of transcription in prokaryotes?



    A. Once transcription has initiated, RNA polymerase transcribes until it reaches the end of the chromosome. B. RNA polymerase transcribes through a stop codon, causing the polymerase to stop advancing through the gene and release the mRNA. C. RNA polymerase transcribes through the terminator sequence, causing the polymerase to fall off the DNA and release the transcript.
    D. RNA polymerase transcribes through an intron, and the snRNPs cause the polymerase to let go of the transcript. E. RNA polymerase transcribes through the polyadenylation signal, causing proteins to associate with the transcript and cut it free from the polymerase.
    C. RNA polymerase transcribes through the terminator sequence, causing the polymerase to fall off the DNA and release the transcript.
  • feldman2009
    RNA polymerase moves in which direction along the DNA?



    A. 3' → 5' along the coding (sense) strand B. 5' → 3' along the double-stranded DNA C. 5' → 3' along the template strand D. 3' → 5' along the template strand
    E. 3' → 5' along the coding strand
    D. 3' → 5' along the template strand
  • feldman2009
    Which of these is the function of a poly (A) signal sequence?



    A. It adds a 7-methylguanosine cap to the 3' end of the mRNA. B. It codes for a sequence in eukaryotic transcripts that signals enzymatic cleavage ~10—35 nucleotides away.
    C. It is a sequence that codes for the hydrolysis of the RNA polymerase. D. It allows the 3' end of the mRNA to attach to the ribosome. E. It adds the poly (A) tail to the 3' end of the mRNA.
    B. It codes for a sequence in eukaryotic transcripts that signals enzymatic cleavage ~10—35 nucleotides away.
  • feldman2009
    In eukaryotes there are several different types of RNA polymerase. Which type is involved in transcription of mRNA for a globin protein?



    A. RNA polymerase III B. ligase C. RNA polymerase II
    D. primase E. RNA polymerase I
    C. RNA polymerase II