

Regulating The Cell Cycle Through Checkpoints And Cyclins
Interactive Video
•
Biology, Science, Chemistry
•
10th - 12th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of the checkpoints in the cell cycle?
To eliminate unnecessary cells
To regulate and ensure proper cell cycle progression
To increase DNA replication
To speed up the cell cycle
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main function of cyclin-dependent kinases (CDKs)?
To add phosphate groups to proteins
To remove phosphate groups from proteins
To degrade cyclins
To synthesize DNA
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How are CDKs activated?
By binding to DNA
By degrading cyclins
By being phosphorylated
By binding to specific cyclins
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the default state of CDKs in a cell?
Inactive
Active
Bound to DNA
Degraded
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which cyclins are produced during the G1 phase?
Cyclins C and F
Cyclins G and H
Cyclins D and E
Cyclins A and B
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the RB protein when it is phosphorylated?
It becomes active and inhibits DNA replication
It binds to cyclins and activates CDKs
It becomes inactive and cannot inhibit DNA replication
It degrades and stops cell division
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which phase involves the production of cyclin A?
G1 phase
G2 phase
S phase
Mitosis
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