Ch. 10 - Cell Cycle

Front

What are histones and where are they found?

Back

Histones are proteins that help package and organize DNA into structural units called nucleosomes. They are found in chromosomes with DNA coiled around them.

Front

How do prokaryotic cells divide?

Back

Prokaryotic cells divide by a process called binary fission.

Front

What phase of the cell cycle is not included in interphase?

Back

The M phase (mitosis) is not included in interphase.

Front

What does haploid mean and what is its symbol?

Back

Haploid refers to a cell that has one complete set of chromosomes, and it is represented by the symbol 'n'.

Front

What is MPF and what effect does it have when injected into cells?

Back

MPF stands for Maturation Promoting Factor, and injecting it into cells induces mitosis.

Front

What are the main phases of the cell cycle?

Back

The main phases of the cell cycle are G1 (Gap 1), S (Synthesis), G2 (Gap 2), and M (Mitosis).

Front

What occurs during the S phase of the cell cycle?

Back

During the S phase, DNA replication occurs, resulting in the duplication of chromosomes.

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 haploid and diploid cells?

Back

Haploid cells contain one set of chromosomes (n), while diploid cells contain two sets of chromosomes (2n).

Front

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

Back

The G1 checkpoint assesses whether the cell is ready to enter the S phase, checking for DNA damage and ensuring sufficient resources are available.