3. A biochemist identifies a new toxin that closes the nuclear pores of a cell's nucleus.
What cellular process would be disrupted by this toxin? Which one would not be? Briefly
explain your answer either way. Refer to Figure 10.6A on page 194 in your textbook.
(2pts)
4.
converts the DNA message into an RNA message. (0.5pts)
5. Match the following terms with their correct description: (1pt)
a. Promoter b. RNA polymerase c. Elongation d. Terminator
The RNA strand grows one amino acid at a time
Creates an RNA copy of a gene
A sequence of bases that determines the end of the gene
DNA sequence in front of the gene that determines the start of transcription
6. RNA splicing removes
(0.5pts)
from the mRNA while keeping the
7. Which of the following processes occurs in the nucleus of a cell? (0.5pts)

The cellular process that would be disrupted by a toxin closing the nuclear pores of a cell's nucleus is nuclear transport. Nuclear pores play a crucial role in regulating the passage of molecules like RNA and proteins in and out of the nucleus. If the nuclear pores are closed, it would hinder the transport of essential molecules, disrupting cellular functions.

RNA splicing removes introns from the mRNA while keeping the exons. This process ensures that only the coding regions of the gene are retained in the final mRNA transcript, allowing the correct information to be used for protein synthesis.

In a eukaryotic cell, transcription occurs in the nucleus. Transcription is the process where RNA is synthesized from a DNA template, leading to the production of mRNA that carries genetic information for protein synthesis.

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