Question 1

The statements describe events during the mitotic cell cycle:

1 - chromosomes migrate to opposite poles of the cell

2 - chromosomes arrange themselves at the equator of the cell

3 - chromosomes condense and the nuclear membrane disappears

4 - centromeres divide

What is the correct order of three of these events in the mitotic cell cycle?

  A  

2 → 3 → 4 


  B  

3 → 2 → 4

  C  

3 → 4 → 2

  D  

4 → 2 → 1

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Question 2

The diagram below shows a cell during cell division. The diploid number of this cell is three.

In which phase of cell division is the cell in the diagram above?

  A  

the cell is in telophase 1 of meiosis


  B  

the cell is in telophase of mitosis


  C  

the cell is in anaphase of mitosis


  D  

the cell is in anaphase 1 of meiosis

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Question 3

What occurs in anaphase of mitosis?

  A  

chromatids line up on the equator of the cell

  B  

chromatids reach the poles of the spindle

  C  

chromatids separate and move to opposite poles

  D  

chromatids start to coil up and become visible

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Question 4

Which is always true of cytokinesis?

1 - cell organelles replicate

2 - cell organelles are divided between two cells

3 - nuclear envelope reforms

  A  

1, 2, and 3

  B  

1 and 3 only

  C  

2 only

  D  

3 only

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Question 5

Which process occurs during prophase of the mitotic cell cycle in an animal cell?

  A  

division of centromeres 

  B  

formation of chromosomes 

  C  

replication of DNA

  D  

separation of centrioles

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Question 6

What occurs during metaphase of mitosis?

  A  

chromosomes attach to the equator of the cell

  B  

chromosomes become shorter and thicker

  C  

chromatids reach the poles of the cell

  D  

each chromosome forms two chromatids


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Question 7

Some chemicals, used to stop tumour growth, work by preventing the DNA double helix from uncoiling and separating.

During which stage of the cell cycle would they act?

  A  

anaphase

  B  

interphase

  C  

metaphase

  D  

prophase

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Question 8

Which processes occur by mitosis?

1 - cloning of plasma cells

2 - gamete production

3 - replacing damaged cells

  A  

1, 2, and 3

  B  

1 and 3 only

  C  

2 only

  D  

3 only 

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Question 9

The cell cycle includes a number of checkpoints.

Which statement about the cell cycle is correct?

  A  

if damaged DNA is detected at a checkpoint apoptosis is triggered

  B  

if damaged DNA is detected at the G2 checkpoint the cell cycle is halted and the cell tries to repair the damage

  C  

if a mistake is detected at a checkpoint the cycle reverts to an earlier checkpoint and is repeated

  D  

the G1 checkpoint checks for mistakes in DNA replication

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Question 10

During which phase of the cell cycle does DNA replication take place?

  A  

G1 


  B  

G2 

  C  

M 

  D  

S

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Question 11

What is the correct sequence of stages in the mitotic cell cycle?

  A  

G1 → G2 → mitosis → S → cytokinesis


  B  

G1 → G2 → S → mitosis → cytokinesis

  C  

G1 → S → G2 → mitosis → cytokinesis

  D  

S → G1 → mitosis → G2 → cytokinesis

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