4단원 Cell cycle Test - 在线考试测评模板

Q1:1、학번？

正确答案

Q2:2、이름？

正确答案

:3、[Question3-4]Assume that each figure below represents a cell that will continue to divide and produce two daughter cells.[图片]

Q3:Which figure could represent only meiotic cell division?

(A) A

(B) B

(C) C

(D) D

Q4:4、[Question3-4]Which figure could represent only meiotic cell division?

(A) A

(B) B

(C) C

(D) D

Q5:5、One difference between normal cells and cancer cells is that cancer cells

(A) are arrested in G0.

(B) are unable to replicate their DNA.

(C) usually have more than one nucleus.

(D) continue to divide even when they are crowded while growing in a Petri dish.

Q6:6、The drug Cytochalasin D inhibits actin formation in a cell while preserving the structure of the rest of the cytoskeleton. Which of the following processes of the cell cycle would be disrupted by exposure to Cytochalasin D?

(A) chromosomes lining up on the metaphase plate

(B) formation of the cleavage furrow

(C) DNA synthesis

(D) condensing of chromosomes

:7、The following two questions refer to one experiment. Two researchers performed an experiment based on their hypothesis that the progression of the cell cycle is controlled by molecules from within the cytoplasm. To investigate this hypothesis, they chose cultured mammalian cells in different phases of the cell cycle and induced them to fuse. Below is a sketch of two of the cells at the beginning of the experiment.[图片]

Q7:Assuming that the researchers’ hypothesis is correct, choose the image that correctly predicts the result of the experiment after fusion.

(A)[图片]

(B)[图片]

(C)[图片]

(D)[图片]

Q8:8、Refer to the same two cells sketched in Question 7. If the progression of the phases of the cell cycle was not triggered by molecules from the cytosol, but instead each cell moved into the next phase automatically after completion of its current phase, which of the following correctly predicts what would happen to the original two fused cells?

(A) The cell on the left would enter G1; the cell on the right would enter G2.

(B) The cell on the left would enter G2; the cell on the right would enter G2.

(C) The cell on the left would enter G2; the cell on the right would enter S.

(D) The cell on the left would enter G1; the cell on the right would enter S.

Q9:9、Which of the following is a characteristic of mitosis but is not a characteristic of meiosis?

(A Damaged tissue is repaired.

(B) Homologous chromosomes separate in anaphase I.

(C) Chiasmata are visible.

(D) Prophase is followed by metaphase.

Q10:10、During which phase of the cell cycle does crossing over occur?

(A) Prophase of mitosis

(B) Prophase Ⅰ of meiosis

(C) Metaphase of mitosis

(D) Metaphase Ⅱ of meiosis

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