Exam 2 Chapter 6 Flashcards
1
Q
DNA building blocks
A
- 2 purines
- Adenine
- Guanine
- Both for DNA & RNA
- 2 Pyrimidines
- Cytosine for DNA
- Thymine for RNA
2
Q
Backbone of deoxyribose
A
5 carbon sugar
3
Q
Nitrogenous base
A
Purine or pyrimidines
4
Q
Base + sugar =
A
Nucleoside
5
Q
Base + sugar + phosphate
A
Nucleotide
6
Q
Nucleosomes
A
Core of 8 histones w/ DNA wrapped around
7
Q
Double stranded DNA + small basic proteins (histones) + small amount of non histone proteins
A
Chromatin
8
Q
Histones
A
- Arginine & lysine rich basic proteins
- Positive charge on AA helps to negative charge on DNA sugar phosphate
9
Q
DNA repeats at chromosome ends that protect it from degradation
A
Telomere
10
Q
Attach during mitotic cell cycle
A
Centromere
11
Q
Ploidy
A
Number of chromosome couples in a cell
12
Q
Most cells in the body are:
A
Diploid
13
Q
Germ cells are:
A
Haploid
14
Q
miRNA
A
Control translation & post translational changes
15
Q
Epigenetics controlled by:
A
Methylation of cytosines
