AP Biology - Unit 4 - Cell Communication & Cell Cycle

Front

What happens to MPF after a cell completes mitosis?

Back

The cyclin component of MPF is degraded.

Front

What type of membrane protein helps intake a message from outside the cell?

Back

Receptor Protein.

Front

In which stage of the cell cycle are cells most susceptible to mutations?

Back

S phase.

Front

What is the role of the spindle during mitosis?

Back

It helps separate the chromosomes.

Front

What does amplification of the signal molecule refer to in cell signaling?

Back

It refers to the process where a single signal molecule can lead to a large response within the cell.

Front

Define 'cell communication'.

Back

The process by which cells send and receive signals to coordinate their functions.

Front

What is the function of receptor proteins?

Back

To bind to signaling molecules and initiate a cellular response.

Front

What occurs during the S phase of the cell cycle?

Back

DNA replication occurs, resulting in two sister chromatids for each chromosome.

Front

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

Back

It is the phase where the cell grows and prepares for DNA synthesis.

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).