AP Biology: Unit 4 Review (CED) Ship

Front

What is the M checkpoint responsible for?

Back

The M checkpoint ensures that nondisjunction does not take place during cell division.

Front

How do cyclin and CdK interact?

Back

Cyclin interacts with CdK to initiate the mitotic phase of the cell cycle.

Front

What are the stages of the cell cycle?

Back

The stages of the cell cycle include interphase, mitosis, and cytokinesis. Apoptosis is NOT a stage of the cell cycle.

Front

What is negative feedback in biological systems?

Back

Negative feedback is a mechanism that maintains homeostasis by regulating physiological processes to counteract changes.

Front

What are the responses of a cell to a signal transduction pathway?

Back

Responses include cell growth, gene expression, and secretion of molecules.

Front

Define interphase.

Back

Interphase is the phase of the cell cycle where the cell prepares for division, including DNA replication.

Front

What is the role of cyclins in the cell cycle?

Back

Cyclins are proteins that regulate the cell cycle by activating cyclin-dependent kinases (CdKs).

Front

What is the significance of the G1 checkpoint?

Back

The G1 checkpoint assesses cell size, DNA integrity, and environmental conditions before the cell enters the S phase.

Front

What happens during the S phase of the cell cycle?

Back

During the S phase, DNA is replicated, resulting in two identical sets of chromosomes.

Front

What is apoptosis?

Back

Apoptosis is a programmed cell death process that eliminates damaged or unnecessary cells.