WorksheetsCell Cycle Control
Total questions: 20
Worksheet time: 12mins
Which molecules act as gatekeepers for each checkpoint of the cell cycle?
p53 gene
cyclins and cycline-dependent kinases
thyroid hormones
What is the purpose the the cell cycle checkpoints?
To repair damaged cells before they enter cell division.
To remove damaged cells from an organism.
How many cell cycle checkpoints are there?
1
2
3
4
What is the first checkpoint of the cell cycle?
Mitosis checkpoint
G1 checkpoint
G2 checkpoint
When is apoptosis initiated?
When DNA damage is repaired.
When cells are removed from the cell cycle.
When DNA damage cannot be repaired.
Name the 3 checkpoints of the cell cycle
Anaphase checkpoint, mitosis/metaphase checkpoint, and telophase checkpoint
Interphase checkpoint, S phase checkpoint, and M phase checkpoint
G1 checkpoint, G2 checkpoint, and S phase checkpoint
G1 checkpoint, G2 checkpoint, and mitosis/metaphase checkpoint
A disorder in which some of the body's cells lose the ability to control growth.
growth factor
human growth hormone
cancer
tumor
Proteins that direct cells to speed up or slow down the cell cycle.
growth factor
human growth hormone
cancer
tumor
Which one of these is characteristic of cancer cells?
They undergo apoptosis.
They do not respond to growth inhibitors
They respond to growth inhibitors.
Which is a function of cyclins?
Cyclins are carbohydrates that regulate DNA replication during the mitosis phase of the cell cycle.
Cyclins are glycoproteins that repair DNA in the beginning of cell cycle.
Cyclins are proteins that regulate when and how often a cell divides.
Cancer promoting substances are called:
Tumors
Carcinogens
Cyclins
Malignant
