Mitosis

Front

A diploid cell has ____ the number chromosomes as a haploid cell.

Back

twice

Front

An organism’s traits are determined by the specific combination of inherited _____. Options: cells, genes, proteins, chromatids.

Back

genes

Front

Identical copies of chromatin held together by cohesin at the centromere are called

Back

sister chromatids

Front

Chromosomes are duplicated during what stage of the cell cycle?

Back

S Phase

Front

Which event does not occur during some stages of interphase?

• DNA duplication
• organelle duplication
• increase in cell size
• separation of sister chromatids

Back

separation of sister chromatids

Front

The mitotic spindles arise from which cell structure? Options: centromere, centrosome, kinetochore, cleavage furrow

Back

centrosome

Front

Attachment of the mitotic spindle fibers to the kinetochores is a characteristic of which stage of mitosis?

Back

prometaphase

Front

Unpacking of chromosomes and the formation of a new nuclear envelope is a characteristic of which stage of mitosis?

Back

metaphase

Front

Separation of the sister chromatids is a characteristic of which stage of mitosis?

Back

anaphase

Front

What is the correct order of events in mitosis?

Options:

1. Sister chromatids line up at the metaphase plate. The kinetochore becomes attached to the mitotic spindle. The nucleus reforms and the cell divides. Cohesin proteins break down and the sister chromatids separate.

2. The kinetochore becomes attached to the mitotic spindle. Cohesin proteins break down and the sister chromatids separate. Sister chromatids line up at the metaphase plate. The nucleus reforms and the cell divides.

3. The kinetochore becomes attached to the cohesin proteins. Sister chromatids line up at the metaphase plate. The kinetochore breaks down and the sister chromatids separate. The nucleus reforms and the cell divides.

4. The kinetochore becomes attached to the mitotic spindle. Sister chromatids line up at the metaphase plate. Cohesin proteins break down and the sister chromatids separate. The nucleus reforms and the cell divides.

Back

The kinetochore becomes attached to the cohesin proteins. Sister chromatids line up at the metaphase plate. The kinetochore breaks down and the sister chromatids separate. The nucleus reforms and the cell divides.