AP Biology Exam - Unit 4 Review

Front

What is the phase of mitosis where chromosomes are separated and pulled to opposite sides of the cell?

Back

Anaphase

Front

What is the phase of mitosis characterized by the alignment of chromosomes along the cell's equatorial plane?

Back

Metaphase

Front

What is the phase of mitosis where the nuclear envelope re-forms and the chromosomes de-condense?

Back

Telophase

Front

What is the phase of mitosis where chromatin condenses into visible chromosomes and the mitotic spindle begins to form?

Back

Prophase

Front

What are second messengers in cellular signaling?

Back

Molecules that relay signals from receptors on the cell surface to target molecules inside the cell.

Front

What is the role of the mitotic spindle during mitosis?

Back

To separate sister chromatids and pull them to opposite poles of the cell.

Front

How do cancerous cells differ from healthy cells in terms of cell cycle regulation?

Back

Cancerous cells often have a much shorter cell cycle and can divide uncontrollably.

Front

What is density-dependent inhibition in cell growth?

Back

A regulatory mechanism that stops cells from dividing when they become too crowded.

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 replication.

Front

What happens during the S phase of the cell cycle?

Back

DNA replication occurs, resulting in two copies of each chromosome.