Cell Cycle & DNA

Front

What must occur prior to complementary nucleotides being added to new DNA strands during DNA replication?

Back

The DNA molecule must be 'unzipped'.

Front

How can cancer be defined in relation to cell division?

Back

Cancer is defined as uncontrolled cell division.

Front

In which phase of mitosis do chromosomes separate in half?

Back

Chromosomes separate in half during ANAPHASE.

Front

What must happen after the S-phase in the cell cycle?

Back

Chromosomes are checked for errors.

Front

What is the purpose of cell cycle checkpoints?

Back

To ensure that the cell cycle phases proceed only when the cell is ready.

Front

What is the S-phase in the cell cycle?

Back

The S-phase is the stage where DNA is replicated.

Front

What happens during prophase of mitosis?

Back

Chromatin condenses into visible chromosomes and the nuclear envelope begins to break down.

Front

What is the role of spindle fibers during mitosis?

Back

Spindle fibers help separate the chromosomes during cell division.

Front

What is the G1 phase in the cell cycle?

Back

The G1 phase is the first gap phase where the cell grows and prepares for DNA replication.

Front

What occurs during telophase?

Back

The chromosomes de-condense, and the nuclear envelope re-forms around each set of chromosomes.