AP Biology: Unit 4 Review (CED)

Front

What are the three parts of a signal transduction pathway?

Back

Reception, Transduction, Response

Front

What occurs when the ligand binds to the receptor?

Back

Confirmation change in shape of receptor

Front

What is the impact of a mutation in any domain of the protein components of the transduction signaling pathway?

Back

Alters response of the cell

Front

Which checkpoint is responsible for ensuring nondisjunction does not take place?

Back

M checkpoint

Front

What feedback mechanism involves homeostasis of a particular condition by regulating physiological processes?

Back

Negative Feedback

Front

Define signal transduction.

Back

The process by which a cell responds to external signals through a series of molecular events.

Front

What is a ligand?

Back

A molecule that binds to a receptor to initiate a signal transduction pathway.

Front

What is the role of receptors in signal transduction?

Back

Receptors detect signals (ligands) and initiate the transduction process.

Front

Explain the term 'confirmation change' in the context of receptor-ligand binding.

Back

A structural change in the receptor that occurs upon ligand binding, enabling signal transduction.

Front

What is the function of the G1 checkpoint in the cell cycle?

Back

To assess cell size, DNA integrity, and nutrient availability before DNA replication.