AP Biology Exam - Unit 4 Review

Front

What is the primary purpose of mitosis?

Back

Ensure genetic material is properly transferred to daughter cells.

Front

List the sequence of events in a typical signal transduction pathway.

Back

Reception, Transduction, Amplification, Response.

Front

What is the role of phosphorylation cascades in cellular processes?

Back

Amplification of the signal.

Front

Describe the transduction stage of a signal transduction pathway.

Back

The g protein changes shape, is activated, activates adenyl cyclase, which activates cAMP, which activates protein kinases.

Front

How much DNA should a daughter cell have compared to the original parent cell after cytokinesis?

Back

The exact same amount.

Front

What is the function of signal transduction pathways?

Back

To transmit signals from outside the cell to elicit a response inside the cell.

Front

Define amplification in the context of signal transduction.

Back

The process of increasing the strength of a signal through a series of molecular events.

Front

What is the role of cAMP in signal transduction?

Back

cAMP acts as a secondary messenger that activates protein kinases.

Front

What is the significance of g-protein coupled receptors?

Back

They play a crucial role in transmitting signals from outside the cell to the inside.

Front

What happens during the reception stage of signal transduction?

Back

A signaling molecule binds to a receptor on the target cell.