Chapter 12 Flashcards
1
Q
4 reasons cells divide
A
Reproduction
Growth and development
Tissue renewal
Maintain SA:V ratio
2
Q
DNA of a cell
A
Genome
3
Q
Subunits of DNA
A
Nucleotides
4
Q
3 comp of DNA
A
Nitrogenous base
Sugar
Phosphate group
5
Q
Chromosomes are composed of:
A
Chromatin
6
Q
Condensed region of chromosome
A
Centromere
7
Q
Region of repetitive DNA sequence at end of chromosome
A
Tetromere
8
Q
Disc-shaped protein that spindle fibers attach to
A
Kinetochore
9
Q
Growth, protein synthesis, organelle synthesis
A
G1
10
Q
DNA duplicated
A
S
11
Q
Growth, synthesis of microtubules, cell cycle check pts
A
G2
12
Q
Cells spend __ % of time in interphase
A
90
13
Q
Nuclear division
A
Mitosis
14
Q
Chromosomes begin to condense
Mitosis spindle begins to from
A
Prophase
15
Q
Nuclear envelope disassembles
Spindle fibers attach to kinetochores
A
Prometaphase
