Question 1

If a cell is exposed to a chemical that inhibits the production of spindle fibers as the cell is preparing for mitosis, what would MOST likely happen?

Accepted Answer

The cell would not divide.

Answer

The cell would undergo meiotic division.

Answer

The cell would break open.

Answer

The cell would continue with mitotic division.

Question 2

Which phase of mitosis is represented in the diagram?

Accepted Answer

metaphase

Answer

anaphase

Answer

Interphase

Answer

prophase

Answer

telophase

Question 3

13. What would most likely result if cytokinesis did not occur
 at the end of mitosis?

Accepted Answer

B one cell with two nuclei

Answer

D two cells, each with one nucleus

Answer

A one cell without a nucleus

Answer

C two cells with no nuclei

Question 4

22. Which explains why all cells in an organism have the same DNA but have different structures and functions?

Accepted Answer

C. The genes in DNA can be either turned on and expressed, or turned off.

Answer

B. The environment causes genes to be expressed differently.

Answer

A. The DNA is the same but the genes are different.

Answer

D. The proteins that are coded for by the DNA are made the same, butmodified differently by the cytoplasm.

Question 5

29. What would most likely be produced when a cell with 46 chromosomes undergoes mitosis?

Accepted Answer

A. two identical cells with 46 chromosomes each

Answer

C. two identical cells with 23 chromosomes each

Answer

D. two genetically different cells with 23 chromosomes each.

Answer

B. two genetically different cells with 46 chromosomes each

Question 6

32. In multicellular organisms, which purpose does mitosis NOT serve?

Accepted Answer

C. a means of reproduction

Answer

D. development of the organism

Answer

A. Tissue repair

Answer

B. growth of the organism

Question 7

33. Compare the DNA of the parent cell to the daughter cells during mitosis.

Accepted Answer

DNA is replicated before mitosis resulting in the same number of identical DNA in the daughter cells.

Answer

DNA in the parent cell is replicated before mitosis and then shared with the two daughter cells resulting in half the DNA

Answer

The daughter cells will share the parent cell's DNA resulting in half the DNA in the daughter cells compared to the parent cell.

Answer

DNA is transcribed and then translated before mitosis resulting in the same number of identical DNA in the daughter cells.

Question 8

35. What would happen if cells were unable to undergo mitosis?

Accepted Answer

Tissue like skin and stomach cells would not be able to heal.

Answer

Organisms would be able to maintain neural and stomach cells but not skin cells

Answer

Organisms could not reproduce

Question 9

13. In multicellular organisms, which purpose does mitosis serve?

Accepted Answer

B. growth and development

Answer

C. mutation prevention

Answer

A. reproduction of organisms

Answer

D. genetic variation

Question 10

Why is stem cell research important within the field of medicine?

Accepted Answer

A. Stem cells have the potential to differentiate into many other types of cells.

Answer

C. Stem cells are differentiated cells that can become undifferentiated and turned into another cell type.

Answer

D. Unlike other types of cells, stem cells are resistant to the mutations that change DNA sequences and cause cancer.

Answer

B. Unlike other types of cells, stem cells only replicate a limited number of times.

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