Lecture 1-2 -DNA, Chromosomes, and Genomes Flashcards
1
Q
Which bases are purines?
A
The double ring bases; adenine and guanine.
2
Q
Which bases are pyrimidines?
A
The single ring bases; thymine and cytosine.
3
Q
Histone acetylation occurs on __________ residues and __________ (activates/deactivates) DNA by _________ (loosening/condensing) histone structure.
A
Lysine; activates; loosening
4
Q
Histone methylation occurs on __________ residues and __________ (activates/deactivates) DNA by _________ (loosening/condensing) histone structure.
A
Lysine; deactivates; condensing
5
Q
Histone phosphorylation occurs on __________ residues and __________ (activates/deactivates) DNA by _________ (loosening/condensing) histone structure.
A
Serine; activates; loosening
