AP Biology Unit 4 Review

Front

What is the primary purpose of mitosis?

Back

Ensure genetic material is properly transferred to daughter cells.

Front

How do cyclins and CDKs function in the cell cycle?

Back

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

Front

What effect does a mutation in a cell membrane receptor have on a signal transduction pathway?

Back

It reduces the response of the pathway.

Front

What is a common final response in a signal transduction pathway?

Back

Move to another phase of the cell cycle.

Front

How do cancerous cells differ from healthy cells?

Back

They have a much shorter cell cycle.

Front

Define mitosis.

Back

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

Front

What role do cyclins play in the cell cycle?

Back

Cyclins are proteins that regulate the timing of the cell cycle.

Front

What is the function of CDKs (Cyclin-dependent kinases)?

Back

CDKs are enzymes that, when activated by cyclins, drive the cell cycle forward.

Front

Explain the concept of signal transduction.

Back

Signal transduction is the process by which a cell responds to external signals through a series of molecular events.

Front

What is density-dependent inhibition?

Back

Density-dependent inhibition is a regulatory mechanism that stops cell division when cells become crowded.