A substance is found to interfere with a dividing cell’s ability to polymerize tubulin proteins into microtubules. With which aspect of cell division would this substance interfere?

1) A typical human epithelial cell in G₂ of interphase would possess (1pt):

– 23 replicated chromosomes

– 46 unreplicated chromosomes

– 96 unreplicated chromosomes

– 23 unreplicated chromosomes

– 46 replicated chromosomes

Answer:

2) Which of the following best describes the division of a human somatic cell undergoing mitotic cell division? It begins with a ______.(1pt)

– haploid cell and results in 2 haploid cells

– diploid cell and results in 2 diploid cells

– diploid cell and results in 2 haploid cells

– diploid cell and results in 4 haploid cells

– haploid cell and results in 2 diploid cells

Answer:

3) A human skin cell is observed. It is found to have two distinct nuclei each having 46 unreplicated chromosomes. These observations would be seen if the cell is in____. (1pt)

– G₂ of interphase

– metaphase of mitosis

– S of interphase

– telophase of mitosis

– prometaphase of mitosis

Answer:

4) A substance is found to interfere with a dividing cell’s ability to polymerize tubulin proteins into microtubules. With which aspect of cell division would this substance interfere? (1pt)

– the replication of chromosomes

– the condensation of chromosomes

– the formation of the mitotic spindle

– the decondensation of chromosomes

Answer: