Mitosis /DNA Practice

The process of DNA replication occurs just before ______________.

• nucleosynthesis

• mitosis

• cytokinesis

• replication

DNA is typically found in cells in the form of a very long strand that is coiled many times and contains thousands or millions of nitrogen bases. Which term best describes this very long molecule of DNA?

• nucleotide

• allele

• chromosome

• gene

Which of these best describes what occurs during cytokinesis?

• the cytoplasm is divided between the two new daughter cells

• the cell begins to divide by replicating the chromosomes

• the nucleus opens to allow the chromosomes to enter the cytoplasm

• the chromosomes are separated

Identify the stage of mitosis where the sister chromatids line up on the equator of the cell.

• anaphase

• telophase

• metaphase

• interphase

A) Chromosome

B) DNA nucleotide

C) Codon

D) Gene

Place the components in order, from smallest to largest.

• A-B-D-C

• D-C-B-A

• B-C-D-A

• C-D-B-A

At the end of telophase, what must occur?

• the cell begins to divide by replicating the chromosomes

• the new cells fuse together to create one larger cell

• the cytoplasm is divided by cytokinesis

• the new cells must immediately begin to divide again

Mitosis results in

• two identical daughter cells.

• two unique daughter cells.

• four unique daughter cells.

• four identical daughter cells.

I. fertilization

II. zygote forms

III. gamete production

IV. sperm transported near egg

Organisms can reproduce asexually or sexually. Sexual reproduction in most organisms follows definite steps.

Read the four steps above and put them in correct order.

• III, II, IV, I

• I, III, II, IV

• III, IV, I, II

• I, II, III, IV

Which of these correctly describes sexual reproduction?

• It needs a single parent to form a daughter cell.

• It needs two parents to form a daughter cell.

• It produces offspring that look exactly similar.

• It produces only a single offspring at a time.

During this process, the nucleus of a cell divides to form two nuclei that are identical to the original cell.

• meiosis

• mitosis

• cytokinesis

• interphase