AP Biology Unit 4 Review

Front

What phase of mitosis is characterized by the separation of sister chromatids?

Back

Anaphase

Front

How does negative feedback function in biological systems?

Back

Negative feedback works to reverse a change in a system.

Front

What is the primary outcome of mitosis?

Back

2 genetically identical diploid cells.

Front

What role do cyclins play in the cell cycle?

Back

Cyclins activate CDKs, which perform the work of cell division.

Front

What significant process occurs during the S-phase of the cell cycle?

Back

DNA replication.

Front

What is the function of CDKs in the cell cycle?

Back

CDKs (Cyclin-dependent kinases) are enzymes that, when activated by cyclins, regulate the progression of the cell cycle.

Front

What is the difference between mitosis and meiosis?

Back

Mitosis results in two identical diploid cells, while meiosis results in four genetically diverse haploid cells.

Front

What is the role of checkpoints in the cell cycle?

Back

Checkpoints monitor the cell cycle and can halt progression to ensure proper division and prevent errors.

Front

What happens during prophase of mitosis?

Back

Chromatin condenses into visible chromosomes, the nuclear envelope breaks down, and spindle fibers begin to form.

Front

What is the significance of the G1 phase in the cell cycle?

Back

The G1 phase is a period of cell growth and preparation for DNA synthesis.