Answer for Revision Science

Chapter 1 and Chapter 2

1

Chapter 1

1. C

2. A

3. B

4. A

5. C

6. B

7. B

8. D

9. C

10. A

11. A

12. B

13. A

14. D

15. A

16. C

17. A

18. I only

19. A

20. C

Paper 2 – Structured Questions

1. (a) Water displacement method

(b) 30 ml

(c) 6 ml (d) (i) No

(ii) The cork will float on the water as the density of the cork is lower than

the water. Thus, the volume of the cork cannot be measured.

(e) Density = Mass / Volume

= 81 g / 30 cm3

= 2.7 g/cm3

(f) (i) The measuring cylinder must be put on a flat surface.

(ii) A piece of white paper must be put behind the measuring cylinder

to get a clear reading.

Chapter 2

1. (a) Please refer to your note book for the parts labeled.

(b) M : To absorb sunlight for photosynthesis

N : To protect and maintain the shape of plant cell.

(c) Cell wall, vacuole, chloroplasts

2. (a) Cell – Tissue – Organ – System

(b) (i) Respiratory System

(ii) Lungs

(c) (i) Nerve cell

(ii) To send nerve impulses

(iii) Nervous system

3. P : Red Blood Cells

Q : Epithelial Cell

R : Nerve Cell

S : Reproductive Cell (Sperm)

(a) P : Does not contain nucleus

Q : Contains nucleus

R : Contains nucleus

S : Contains nucleus

(b) Common characteristic : Contains nucleus Without nucleus

Alphabets represents by: Q, R, S P

4. (a) R : Contains only one cell

S : Contains only one cell

T : Contains only one cell

U : Contains many cells

Answer for Revision Science

Chapter 1 and Chapter 2

2

(b) Common characteristics :

Contains only one cell Contains many cells

Euglena, Paramecium, Amoeba Spirogyra

5. (a) M : Plant Cell

N : Animal Cell

(b) Please refer to the Note Book.

(c) Q : Protects and maintains the shape of the cell

R : Regulates the movement of substances in and out of the cell

S : Controls all activities of the cell