Cell Growth And Division (Mitosis)
.
- 1.At the start of mitosis a chromosome is made up of two:
- A.
Centromeres
- B.
Centrioles
- C.
Chromatids
- D.
Spindles
- 2.Which of the following is NOT an advantage of asexual reproduction?
- A.
Increases genetic diversity
- B.
Simple and efficient
- C.
Produces large number of offspring quickly
- D.
Requires one parent
- 3.
A scientist performs an experiment to determine the effect of temperature on the developmental time of flies. (Larva to adult fly)Which of the following would most likely be true?- A.
There is a direct relationship between temperature and developmental time of flies
- B.
The rate of cell division is faster at the increased temperature.
- C.
At a temperature of 36 C, the rate will be half the rate of 18 C (25.1 hours).
- D.
All of the choices are correct.
- 4.Which of the following occurs during the S phase of the cell cycle?
- A.
The genetic material is duplicated.
- B.
A cell grows in size.
- C.
The number of organelles increases.
- D.
The cytoplasm divides in two.
- 5.Emmet noticed that his tarantula had molted (it shed off its outer skin) and now was larger in size than when he first received his pet. Which explanation BEST describes what happened?
- A.
Parts of the tarantula stretched as it grew larger.
- B.
The tarantula ate food and water.
- C.
The total number of cells in the tarantula increased.
- D.
The tarantula cells all grew larger.
- 6.A dog will have 78 chromosomes in its nucleus. During the S phase of the cell cycle_____ number of chromatids will be in the nucleus and after mitosis (and cytokinesis) _____ number will be present in the nucleus.
- A.
156; 78
- B.
78;78
- C.
78; 156
- D.
39;78
- E.
78;39
- 7.
Look at the data table below showing the diploid number of chromosomes in various organism. Which of the following is the best explanation for why each of these organisms have a even number of chromosomes?
- A.
It is only a coincidence; many organisms have an odd number of chromosomes.
- B.
Chromosomes double each time a cell divides; so after the first division, the number will always be even.
- C.
The diploid number represents a pair of chromosomes -- one from each parent -- so it will always be an even number.
- 8.Which phase of the cell cycle are chromosomes first visible?
- A.
Interphase
- B.
Prophase
- C.
Metaphase
- D.
Anaphase
- E.
Telophase
- 9.Which phase of the cell cycle is characterized by the chromosomes all gathering in a plane across the middle of the cell?
- A.
Interphase
- B.
Prophase
- C.
Metaphase
- D.
Anaphase
- E.
Telophase
- 10.Which phase of the cell cycle completes the division of a cell?
- A.
Interphase
- B.
Prophase
- C.
Metaphase
- D.
Anaphase
- E.
Telophase
- F.
Cytokinesis
- 11.Which phase of the cell cycle does the nuclear membrane breaks down?
- A.
Interphase
- B.
Prophase
- C.
Metaphase
- D.
Anaphase
- E.
Telophase
- F.
Cytokinesis
- 12.Which phase of the cell cycle are sister chromatids separated from their partners?
- A.
Interphase
- B.
Prophase
- C.
Metaphase
- D.
Anaphase
- E.
Telophase
- F.
Cytokinesis
- 13.Which phase of the cell cycle is basically the reverse of prophase?
- A.
Interphase
- B.
Metaphse
- C.
Anaphase
- D.
Telophase
- 14.Which phase of the cell cycle are the two nuclei separated?
- A.
Interphase
- B.
Prophase
- C.
Metaphase
- D.
Anaphase
- E.
Telophase
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