• CNEC Christian College

• BIO 123

Cell cycle and division
Note:
1 Answer ALL questions.
2 Write your answers to Section A in the boxes next to
the questions, and your answers to Sections B and C in
the spaces provided below the questions.
Time and marks
Sections A & B: 35 mins / 30 marks
Sections A to C: 40 mins / 35 marks
A Multiple-choice questions
(10 marks, 1 mark each)
Directions: Questions 1 and 2 refer to the diagram below, which shows several stages of cell
division occurring in some cells of an onion root tip.
1 Which of the following shows the correct sequence of cell division?
A PQRS B PSRQ
C SPQR D SRQP

2 Which of the following statements about cell R are correct?
(1) It is diploid.
(2) Chromatin fibres in the cell coil up.
(3) Homologous chromosomes start to pair up.
A (1) and (2) only B (1) and (3) only
C (2) and (3) only D (1), (2) and (3)
New Senior Secondary Mastering Biology  Oxford University Press 2021
(Third Edition)
- 1 -Chapter test 11 Cell cycle and division

3 Which of the following cells can carry out mitotic cell division?
(1) sperms
(2) liver cells
(3) mature red blood cells
A (1) only B (2) only
C (1) and (3) only D (2) and (3) only

4 The diagram below shows a simplified cell cycle.
If a cell is supplied with radioactive nucleotides, these nucleotides will probably be
incorporated into the chromosomes of the cell at
A stage P. B stage Q.
C stage R. D stage S.

5 The diagram below shows a dividing cell of an animal.
Which of the following statements about this cell are correct?
(1) It is a gamete-producing cell.
(2) Crossing over may have occurred in the cell.
(3) Each daughter cell will have four chromosomes.
A (1) and (2) only
New Senior Secondary Mastering Biology  Oxford University Press 2021
(Third Edition)
- 2 -Chapter test 11 Cell cycle and division
B (1) and (3) only
C (2) and (3) only
D (1), (2) and (3)

6 Which of the following statements about meiotic cell division are correct?
(1) Chromosomes duplicate twice in meiotic cell division.
(2) The second meiotic division resembles mitosis.
(3) Meiotic cell division is a source of genetic variation.
A (1) and (2) only
B (1) and (3) only
C (2) and (3) only
D (1), (2) and (3)

7 The diagram below shows a cell at a certain stage of cell division.