Lecture 1-2 -DNA, Chromosomes, and Genomes

Question 1

Which bases are purines?

Answer 1

The double ring bases; adenine and guanine.

Question 2

Which bases are pyrimidines?

Answer 2

The single ring bases; thymine and cytosine.

Question 3

Histone acetylation occurs on __________ residues and __________ (activates/deactivates) DNA by _________ (loosening/condensing) histone structure.

Answer 3

Lysine; activates; loosening

Question 4

Histone methylation occurs on __________ residues and __________ (activates/deactivates) DNA by _________ (loosening/condensing) histone structure.

Answer 4

Lysine; deactivates; condensing

Question 5

Histone phosphorylation occurs on __________ residues and __________ (activates/deactivates) DNA by _________ (loosening/condensing) histone structure.

Answer 5

Serine; activates; loosening