Biology

Transcription/Translation/Gene Expression-2

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  • 1. Multiple-choice
    2 minutes
    1 pt
    Image

    The diagram shows the process in which pre-mRNA is changed into mRNA.

    Which events are described in the diagram?

    Introns are removed, and remaining exons are spliced together

    Exons are removed, and remaining introns are spliced together

    Introns and exons are removed, and remaining DNA is spliced together

    Introns are removed, condensed and then combined again

  • 2. Multiple-choice
    2 minutes
    1 pt

    Consider this sequence of nucleotides in an mRNA molecule.

    AGGGUCCAA

    Which could describe the translation of this sequence?

    3 codons that are translated into 3 amino acids

    3 codons that are translated into 9 amino acids

    3 codons that are translated into 3 polypeptides

    9 nucleotides that are translated into 9 amino acids

  • 3. Multiple-choice
    2 minutes
    1 pt
    Image

    Percy is studying the diagram shown here. The diagram is one fourth of a larger diagram that explains the genetic code.


    By studying the diagram, Percy would be MOST LIKELY to construct an answer to which of these questions?

    How many codons make up a typical mRNA molecule?

    Are specific codons associated with introns and exons?

    Which amino acid is most common in a typical protein?

    Are all codons translated into amino acids?

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