AP Biology: Unit 4 Review

Front

What is the cell cycle?

Back

The cell cycle is a series of phases that a cell goes through to grow and divide, including interphase, mitosis, and cytokinesis.

Front

What is apoptosis?

Back

Apoptosis is the process of programmed cell death, which is NOT a stage of the cell cycle.

Front

What is positive feedback in biological systems?

Back

Positive feedback is a mechanism that amplifies responses and processes, leading to an increase in the output or effect.

Front

What is negative feedback in biological systems?

Back

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

Front

What are the stages of the cell cycle?

Back

The stages of the cell cycle include interphase (G1, S, G2), mitosis, and cytokinesis.

Front

What happens during interphase?

Back

During interphase, the cell grows, duplicates its DNA, and prepares for division.

Front

What is G0 phase?

Back

G0 phase is a stage where the cell is in a resting state and no longer divides.

Front

What is the role of signal transduction pathways?

Back

Signal transduction pathways are processes by which cells respond to external signals, leading to various cellular responses.

Front

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

Back

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

Front

What is mitosis?

Back

Mitosis is the process of cell division that results in two identical daughter cells.