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Genetic information, variation and relationships between organisms

Genetic information, variation and relationships between organisms

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Question 4
a.

Identify the two distinct types of biological macromolecule that associate to form the functional subunits of a eukaryotic ribosome.

[1]
b.

Describe how transfer RNA (tRNA) molecules interact with both mRNA and amino acids during the translation phase of protein synthesis to construct a polypeptide chain.

[3]
c.

Table 1 shows a short segment of the DNA template strand sequence of a specific eukaryotic gene.

Complete Table 1 by writing the complementary nucleotide base sequence of the pre-mRNA transcript produced from this segment.

Table 1

DNAAGTCCATGC
pre-mRNA
[1]
d.

In eukaryotic cells, the mature mRNA molecule that binds to a ribosome is significantly shorter than the initial pre-mRNA molecule transcribed in the nucleus. Explain the process that causes this difference in length.

[2]
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Genetic information, variation and relationships between organisms Questions

  1. A Level
  2. /Biology
  3. /Genetic information, variation and relationships between organisms

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