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CHAPTER 2 : CELL STRUCTUR AND CELL ORGANISATION

PAPER 1

1. The following information are features of an organelle in a cell.

● Spherical or oblong shaped

● Smooth outer membrane and folded inner membrane

Which of the following organelles has features as stated above?

A. Vacuole

B. Nucleus

C. Chloroplast

D. Mitochondria

2. The information below is about plant cells?

● Made up of cellulose

● Fully permeable

● Maintains the shape of the cells

● Provide supports for the cell

Which of the labeled parts A, B, C and D are related to the information

above?

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3. Which of the following is a connective tissue?

4. The diagram 1 shows a typical animal cell.

Diagram 1

Which of the following is true about the functions of organelles X and Y?

Function of organelle X Function of organelle Y

A. Site of lipid synthesis Site of protein modification

B. Site of protein modification Site of protein synthesis

C. Site of protein synthesis Site of lipid synthesis

D. Site of glycoprotein synthesis Site of protein synthesis

5. The following statements are about an organelle of a cell.

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● Exist freely in the cytoplasm or attached to the rough endoplasmic

reticulum

● Site of the protein synthesis

What is the organelle?

A. Vacuole

B. Nucleus

C. Ribosome

D. Golgi body

6. Diagram 2 shows the structure of a plant cell.

Diagram 2

Which of the following is true about X?

A. Semipermeable

B. Elastic

C. Fully permeable

D. Rigid

7. Diagram 3 shows how glucose changes to glycogen in the human body.

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Diagram 3

Which of the following represent hormones P and Q?

Hormone P Hormone Q

A Insulin Glucagon

B Glucagon Insulin

C Adrenaline Insulin

D Thyroxine Adrenaline

8. Which of the following cells forms the basic tissue in plants?

A. Guard cell

B. Xylem cell

C. Epidermal cell

D. Parenchyma cell

9. Which of the following blood cells carries oxygen in the body?

10. Diagram 4 shows the cell organization in a multicelullar organism.

Cell Tissue R System Organism

Diagram 4

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Which part of the body can be represented by R?

A. Ligament

B. Blood

C. Epithelium

D. Liver

11. Diagram 5 shows a type of fresh water unicellular organism.

Diagram 5

Which of the labelled parts A, B, C or D performs osmoregulation?

12. Diagram 6 shows an animal cell.

Diagram 6

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What is organelle P?

A. Nucleus

B. Chloroplast

C. Mitochondrion

D. Golgi body

13. Which organ consists of cells which have the highest density of rough

endoplasmic reticulum?

A. Stomach

B. Heart

C. Brain

D. Kidney

14. Diagram 7 shows an animal cell.

Diagram 7

What are P, Q and R?

P Q R

A Nucleus Rough endoplasmic reticulum Vesicle

B Vesicle Golgi apparatus Nucleus

C Mitochondria Rough endoplasmic reticulum Chromosome

D Mitochondria Smooth endoplasmic reticulum Chromosome

15. Which organelle synthesises protein?

A. Vacuole

B. Ribosome

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C. Mitochondrion

D. Golgi apparatus

PAPER 2 (Structure)

1. Diagram 1 shows a plant cell as seen under an electron microscope.

(a) (i) On Diagram 1, label the structures P, Q, R and S. [4 marks]

(ii) State the function of structure:

P : ……………………………………………………………………………….

S :………………………………………………………………………………..

[2 marks]

(b) Explain the role of R to maintain cell turgidity.

……. …………………………………………………………………………………..

…………………………………………………………………………………………

[2 marks]

(c) Every somatic cell which contains structure Q has a potential to form a

complete new organism.

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i. Name the technique used to produce new plants in large quantities.

……………………………………………………………………………………

[1 marks]

ii. By using one suitable part of the plant, explain the technique in 1(c)(i)

……………………………………………………………………………………

……………………………………………………………………………………

……………………………………………………………………………………

…………………………………………………………………………………...

[4 marks]

2. Diagram 2 shows four levels of cell organization in humans.

Diagram 2

a. Complete Table 2 by naming Level 2 and Level 3.

Level Name

1 Cells

2

3

4 System

[2 marks]

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b. (i) The cells undergo process X to become specific cells that perform

a specific function.

Name process X.

……………………………………………………………………………………

[1 mark]

(ii) What is the function of the structure in level 2?

……………………………………………………………………………………

[1 mark]

(iii) The structure in level 4 is one of the body systems.

Name this system.

……………………………………………………………………………………

[1 mark]

(iv) State one function of the system in 2 (b)(iii).

……………………………………………………………………………………

[1 mark]

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PAPER 2 (Essay)

1.

Multicellular organisms like humans, need specific transport systems as compared to

unicellular organisms like Amoeba sp., which do not need a transport system.

Give an evaluation of an above statement based on the physical features of

the organisms with the following physiological processes:

● Respiration

● Nutrition

● Excretion

[10 marks]

2. Diagram shows the structure of a unicellular organism which lives in a

freshwater pond.

Explain the function of X in osmoregulation.

[4 marks]

3. (a) Explain why cell specialization is important in multicellular organisms.

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[2 marks]

a. Name the type of tissues found in animals.

[4 marks]

END OF QUESTIONS

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