Unit 7 Quiz
1. Which of the following DOES NOT occur during mitosis?
A. DNA replicates.
B. Chromosomes condense.
C. The nuclear envelope of cells breaks down.
D. Chromosomes move to opposite poles.
2. Mitosis is conventionally divided into four phases. What is the correct order of the
four phases?
I. Anaphase
II. Prophase
III. Metaphase
IV. Telophase
A. I, II, III, IV
B. I, III, IV, II
C. II, III, I, IV
D. III, II, I, IV
3. What happens during prophase in mitosis?
A. Sister chromatids separate and move apart.
B. Chromosomes condense and the mitotic spindle develops.
C. Chromosomes line up at the metaphase plate.
D. The cell divides.
4. Choose the best answer to fill in the blanks. In ______________mitosis, the nuclear
envelope remains intact and chromosomes migrate to opposite poles of a spindle within
the nucleus. In ________________mitosis, the nuclear envelope breaks down and
then re-forms around the two sets of separated chromosomes.
A. Open; closed
B. Closed; open
C. Both open and closed; both open and closed
D. Neither open nor closed; neither open nor closed
5. What is the definition of a mitotic spindle?
A. A bilaterally symmetrical bundle of microtubules shaped like a football with opposing
halves at the equator of the cell
B. A bilaterally symmetrical bundle of microtubules shaped like a football poised to
begin cell division
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C. A bilaterally symmetrical bundle of microtubules shaped like a football with opposing
halves at the periphery of the cell
D. A bilaterally symmetrical bundle of microtubules shaped like a football attempting to
make touchdowns
6. What is the definition of telophase?
A. The phase of mitosis during which chromosome line up at the mid-line of the cell
B. The phase of mitosis during which the nuclear envelope breaks down
C. The phase of mitosis during which chromosomes condense
D. The phase of mitosis during which the nuclei re-form and chromosomes decondense
7. Which of the following is NOT a target of MPF?
A. Stabilizing microtubules
B. Phosphorylating condensins
C. Phosphorylating lamins
D. Phosphorylating GM130
8. Fill in the blank. Sister chromatids are transported to each pole along
______________.
A. Kinetochore microtubules
B. Astral microtubules
C. Polar microtubules
D. F-actin
9. Identify which of the following occurs during Anaphase A (A) or Anaphase B (B) or
neither (N).
_______ Shortening of kinetochore microtubules
_______ Chromosomes move towards what will be the daughter cells
_______ Mitotic spindles elongate
__ ____ Regions of DNA recombine
10. Which of the following statements about binary fission is false?
A. It occurs in prokaryotes.
B. The cell division occurs by septum extensions.
C. It occurs in plants.
D. Binary fission is a variation to cytokinesis.
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