Assessment 1: Class 5 Flashcards
1
Q
What is needed in G0 (Gap 0)?
A
Cells need a stimulus to start the cell cycle
2
Q
What occurs during G1 (Gap 1)?
A
- Takes 8-10 hours
- New protein
- More organelles
- Increase in size
3
Q
What happens at the first checkpoint?
A
- Is there enough room?
- Is there enough food?
- Are there enough nucleotides? (GATC)
4
Q
What takes place during S (synthesis)?
A
- Takes 6-8 hours
- DNA is replicated
5
Q
What takes place during G2 (Gap 2)?
A
- Takes 3-4 hours
- Check DNA
- Make more protein for next phase
6
Q
What is CDK?
A
Cyclin Dependent Kinase
7
Q
What is the purpose of CDK?
A
CDK binds phosphates to things
8
Q
What does it mean if a word ends in -ase
A
That is an enzyme
9
Q
How long do red blood cells live for?
A
About 2 months
10
Q
What cells are constantly growing? (5)
A
- Hair
- Nails
- Skin
- Blood
- Muscle cells (if you work out a lot)
11
Q
Phosphoralation
A
Attaching phosphates from the environment onto things
12
Q
What happens when CDK attaches to cyclin?
A
The cell cycle is turned “on”
13
Q
What are the “Gate Keeper Proteins”?
A
- P16
- P53
14
Q
What are the most frequently muted proteins in cancer cells?
A
- P53
- Rb
