AP Biology Unit 4 Review

Front

What is the end result of mitosis?

Back

2 genetically identical diploid cells.

Front

What happens when a signal molecule binds to a G protein?

Back

The G protein gets activated and interacts with either an ion channel or an enzyme in the membrane.

Front

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

Back

Transcription of a desired mRNA sequence.

Front

How many chromosomes do fruit fly daughter cells have after mitosis?

Back

8 chromosomes.

Front

What is the correct sequence of events in a typical signal transduction pathway?

Back

Reception, Transduction, Amplification, Response.

Front

Define mitosis.

Back

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

Front

What is a G protein?

Back

A G protein is a molecular switch that activates when a signal molecule binds to a receptor.

Front

What role do kinases play in signal transduction?

Back

Kinases are enzymes that add phosphate groups to proteins, often activating them.

Front

What is 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 the function of ligand-gated channels?

Back

Ligand-gated channels open in response to the binding of a signaling molecule.