9)An insertion of two nucleotides occur within an exon

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9)An insertion of two nucleotides occur within an exon. Which of the following processes would be affected by this mutation?

a.replication

b.transcription

c.translation

d.both b and c

e.a, b, and c

 

5.The _______________ of a mRNA to make a protein occurs in the _____________.

 

a.translation, nucleus

b.transcription, nucleus

c.transcription, cytoplasm

d.translation, cytoplasm

 

4)Which of the following statements about protein degradation is false?

a.The proteasome has a central cylinder lined with proteases.

b.Damaged and misfolded proteins can be degraded by the proteasome.

c.Different proteins have different lifespans in cells.

d.Proteasomes are present in both the nucleus and cytosol.

e.Proteins with a polyubiquitin chain are degraded by the lysosome.

 

2)Why might a point mutation in DNA make a difference in the level of a protein's activity?

a.It might exchange one serine codon for a different serine codon.

b.It might substitute an amino acid in the active site.

c.It might exchange one stop codon for another stop codon.

d.It might result in a chromosomal translocation.

e.It might substitute the N terminus of the polypeptide for the C terminus.