AP Biology Unit 4 Review

Front

What condition does a person with insulin deficiency struggle to regulate?

Back

Blood sugar.

Front

What is the final phase of mitosis?

Back

Telophase.

Front

What are the three parts of a signal transduction pathway?

Back

Reception, transduction, response.

Front

How do cyclins and CDKs function in the cell cycle?

Back

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

Front

What are the junctions in plant cell walls that allow for the exchange of small soluble compounds?

Back

Plasmodesmata.

Front

Define insulin.

Back

A hormone produced by the pancreas that regulates blood sugar levels.

Front

What is the role of cyclins in the cell cycle?

Back

Cyclins regulate the timing of the cell cycle by activating CDKs.

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

What is the significance of signal transduction pathways in cellular communication?

Back

They allow cells to respond to external signals and coordinate cellular responses.

Front

What occurs during telophase in mitosis?

Back

The chromosomes de-condense, and the nuclear envelope re-forms around each set of chromosomes.