Bio Unit 3- Cell Cycle and Cell Division

Front

What is the M checkpoint in the cell cycle?

Back

The M checkpoint ensures that chromosomes are lined up correctly along the metaphase plate and that they will be divided properly during anaphase.

Front

What attaches spindle fibers to chromatids?

Back

Centromeres attach spindle fibers to chromatids.

Front

What occurs during the G1 phase of the cell cycle?

Back

During the G1 phase, the cell grows to full size and performs its normal functions.

Front

What is the leading strand in DNA replication?

Back

The leading strand is the DNA strand that is synthesized continuously in the 5' to 3' direction as the DNA unwinds.

Front

What form is DNA in during cell division?

Back

During cell division, DNA is in the form of chromosomes.

Front

What is the role of polymerase in DNA replication?

Back

Polymerase builds the DNA strand by adding nucleotides to the growing chain.

Front

What happens during the S phase of the cell cycle?

Back

During the S phase, DNA is replicated, resulting in two sister chromatids for each chromosome.

Front

What is the G2 checkpoint?

Back

The G2 checkpoint ensures that DNA has been replicated correctly and that the cell is ready to enter mitosis.

Front

What is the function of spindle fibers?

Back

Spindle fibers help separate the chromosomes during cell division by attaching to the centromeres.

Front

What is chromatin?

Back

Chromatin is the relaxed form of DNA found in the nucleus during interphase.