AP Biology Unit 4 Cell Cycle and Cell Communication

Front

What is the term for the junction where two neurons communicate through neurotransmitters?

Back

Synapse

Front

What is the structure that holds sister chromatids together during cell division?

Back

Centromere

Front

What is the process of programmed cell death called?

Back

Apoptosis

Front

How many chromosomes do fruit fly daughter cells have after mitosis if the parent cell has 8 chromosomes?

Back

8 chromosomes.

Front

What mechanism do bacteria use to sense local population density?

Back

Quorum sensing.

Front

What phase of the cell cycle is characterized by the replication of DNA?

Back

S phase (Synthesis phase).

Front

What is the role of cyclins in the cell cycle?

Back

Cyclins are proteins that regulate the progression of the cell cycle by activating cyclin-dependent kinases (CDKs).

Front

What is the difference between mitosis and meiosis?

Back

Mitosis results in two identical daughter cells, while meiosis results in four genetically diverse gametes.

Front

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

Back

The G1 checkpoint assesses cell size, DNA integrity, and nutrient availability before the cell enters the S phase.

Front

What is the term for the process by which cells communicate with each other through signaling molecules?

Back

Cell signaling.