Chromosomes And The Cell Cycle Flashcards
1
Q
What is chromatin?
A
46 non replicated chromosomes. Invisible
2
Q
What is a chromatid?
A
Replicated chromosome. Composed of two sister chromatids. Coils up around histones (protein)
3
Q
What is the centromere?
A
It holds the chromatids together.
4
Q
What is the G1 phase?
A
A period of growth and replication. The cell functions with a working metabolism.
5
Q
What is the S phase?
A
Where the DNA replicates.
6
Q
What is the G2 phase?
A
The preparation for cell division. It has limited function
7
Q
What is the M phase?
A
The nucleus divides and so does the cytoplasm. Forms two daughter cells
8
Q
How many chromosomes are there in the human body?
A
46 chromosomes in 23 pairs
9
Q
What is interphase?
A
All phases of the cell cycle excluding mitosis.
