Cell as A Unit of Life

1 The diagram shows a plant cell. Which of the structures A, B, C or D maintains the shape of the plant cell?

PMR 2004

2 The diagram shows a plant cell.

Which of the following structures A, B, C or D controls the activity of the cell?

PMR 2005

3 Which of the following is a multicellular organism?

A

B

C D

PMR 2006

4 Diagram 1 shows a type of tissue in the human body.

Diagram 1The tissue is

A nerve tissueB muscle tissueC epithelial tissueD connective tissue

PMR 2006

5 Diagram 1 shows four types of microorganisms.

Diagram 1

Which of the following are unicellular microorganisms?

A Amoeba, Paramecium, SpirogyraB Spirogyra, Amoeba, ChlamydomonasC Chlamydomonas, Amoeba, ParameciumD Paramecium, Spirogyra, Chlamydomonas

PMR 2007

6 The following statements about an animal cell.

The smallest cell in human body

Can move by itself

Which of the following cells is described by the statements?

A Ovum cellB Sperm cellC Red blood cellD White blood cell

PMR 2007

7 Diagram 2 shows the classification of organism.

Diagram 2

Which of the following are true about X and Y?

X YA Unicellular MulticellularB Multicellular UnicellularC Have a cilia Have no ciliaD Have no cilia Have a cilia

PMR 2008

8 Which cell builds up tissue?

PMR 2008

1 Figure 1 shows cells K and L. (PMR 2004)

Cell K : ………………………………….. Cell L : …………………………………

Figure 1

(a) Name cells K and L in the spaces provided in Figure 1. (2 marks)

(b) Q controls all cell activities. Label Q in Figure 1. (1 mark)

(c) Based on the structures R or S in cell L, complete Table 1.

Name of structure Function of structure

Table 1(2 marks)

2 Figure 2 shows a plant cell. (PMR 2005)

Q: ______________________

FIGURE 2

Figure 2

(a) On Figure 2, label structures P, Q and R using the following words:

Nucleus Cell wall Chloroplast

(3 marks)

(b) Draw lines to show the correct match between the structures and their functions. Draw the lines as shown below.

Structure Function

(2 marks)

Regulates movement of the substances in and out of the cell

Protects and maintains the shape of the cell

Controls all the activities of the cell

Carries out photosynthesis

P

Q

R

3 Diagram 3 shows four types of cells, J, K, L and M which are found in living organisms.(PMR 2006)

J K

L M

Diagram 3

(a) Observe the cells in Diagram 3.

Based on your observations, state one characteristic of each cells J, K, L and M.

J : …………………………………………………………………………………………………

K : …………………………………………………………………………………………………

L : …………………………………………………………………………………………………

M : …………………………………………………………………………………………………

(4 marks)

(b) Classify cells J, K, L and M in diagram below into two groups based on their common

4 (a) i. Diagram 1 shows some examples of the organization of cells in the human body. Which of the following is an organ? (PMR 2007) Tick ( √ ) in the box provided.

Diagram 1

(1 mark)

ii. Circle the words in the box below to show two other examples of organs.

ovum muscle nose lungs

(2 marks)

(b) Draw lines to match each type of cell with its function.

Cell Function

Carries oxygen to all part of the body

Sends information in the body

Destroys bacteria

Involved in reproduction

(3 marks)

Answers

Paper 1

1. D 2. A 3. D 4. C 5. B 6. C 7. A 8. C

Paper 21. a. K: Animal cell

L: Plant cell

b. Nucleusc.

Name of structure Function of structure R: cell wall S: chloroplast

Gives a cell a fixed shape

Contains chlorophyll for photosynthesis

2. a. P: cell wall Q: chloroplast R: nucleus

b. Structure Function

Regulates movement of the substances in and out of the cell

Protects and maintains the shape of the cell

Controls all the activities of the cell

Carries out photosynthesis

P

Q

R

3. a. J: it has no cell wall K: it has a cell wall L: it has no cell wall M: it has no cell wall

b. Group 1: Has a cell wall – K Group 2: Has no cell wall – J, L, M

4 (a) i.

ii. nose and lungs

√

(b)

Cell Function

Carries oxygen to all part of the body

Sends information in the body

Destroys bacteria

Involved in reproduction

(3 marks)