Which of the following constraints affect the stability α-helix, 

a) the intrinsic propensity of an amino acid residue to form an α-helix.

b) the interactions between R groups.

c) the bulkiness of adjacent R groups.

d) the occurrence of Pro and Gly residues.

#Question id: 3774

#Section 3: Genetics, Cellular and Molecular Biology

Use the figure to answer the following question. Referring to the figure, what bases will be added to the primer as DNA replication proceeds?

#Question id: 3775

#Section 3: Genetics, Cellular and Molecular Biology

What are telomeres?

#Question id: 3776

#Section 3: Genetics, Cellular and Molecular Biology

Telomere shortening puts a limit on the number of times a cell can divide. Research has shown that telomerase can extend the life span of cultured human cells. How might adding telomerase affect cellular aging?

#Question id: 3778

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following effects might be caused by reduced or very little active telomerase activity?

#Question id: 3779

#Section 3: Genetics, Cellular and Molecular Biology

In a healthy eukaryotic cell, the rate of DNA repair is typically equal to the rate of DNA mutation. When the rate of repair lags behind the rate of mutation, what is a possible fate of the cell?

#Question id: 3780

#Section 3: Genetics, Cellular and Molecular Biology

If a cell were unable to produce histone proteins, which of the following results would be a likely effect on the cell?