Ch. 4 Review (Cell Division)

Mitosis is the stage during which

• the cell’s nucleus divides into two new nuclei.

• the cell’s DNA is replicated.

• the cell divides into two new cells.

• the cell’s cytoplasm divides.

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NGSS.HS-LS1-4

What happens during cytokinesis in animal cells?

• A new round of mitosis begins.

• Two new daughter cells are formed.

• Each organelle divides into two parts.

• A cell plate forms in the middle of the cell.

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NGSS.HS-LS1-4

DNA is shaped like a

• long, thin rod.

• spiral staircase.

• straight ladder.

• triple helix.

Each rung of the DNA ladder is made of

• a single nitrogen base.

• a pair of nitrogen bases.

• three nitrogen bases.

• four nitrogen bases.

During what stage of the cell cycle does replication occur?

• interphase

• cytokinesis

• prophase

• mitosis

What is copied during replication?

• the cell’s organelles

• chromosomes

• the cell’s DNA

• two daughter cells

What molecule is a double spiral that has pairs of nitrogen bases?

• DNA

• RNA

• DNR

• APA

Which of the following is NOT true of DNA?

• It has two strands

• It has the bases A,T,G,C

• It is found in the nucleus of cells

• It is same thing as RNA

Most human cells have 46 chromosomes. How many chromosomes are in the sex cells (egg & sperm)?

• 46

• 92

• 23

• No Chromosomes

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NGSS.HS-LS3-2

Which base is found in RNA and Not in DNA

• A

• U

• T

• G