soalan amoeba

7/29/2019 Soalan Amoeba

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BIO F4 TEST 1

SECTION A

OBJECTIVE QUESTIONS

[20 MARKS]

1. Which of the following show the importance of biology to man?

I. Biology helps us to understand our bodys system.

II. Biology helps us to understand our environment.III. Biology contains the basic knowledge required by other fields.

IV. Biology contains knowledge which can be used as guidelines for better health.

A. I and II only C. I, II and III onlyB. I and IV only D. I, II and IV only

2. Which of the following does a cytologist study?

3. Which of these can be found in both animal cells and plant cells?

I Chloroplast III Mitochondrion

II Cell membrane IV Ribosome

A. I and II only C. II, III and IV only

B. II and III only D. I, II, III and IV

4.

The description above describes the structure and function of the

A. ribosome C. centriolesB. lysosome D. rough endoplasmic reticulum

SEM 1, 2008

It is a membrane-enclosed storage structure

It contain digestive enzymes

It is produced in the Golgi apparatus


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5. The diagram shows an animal cell.

Which of the following organelles is found in abundance in the cell?

6. The diagrams below shows three types of muscle tissues X, Y and Z.

Where are the muscle tissues X, Y and Z found respectively?

X Y Z

A. Attached to bones In the walls of the intestine In the walls of the heart

B. In the walls of the intestine Attached to bones In the walls of the heart

C. In the walls of the heart In the walls of the intestine Attached to bones

D. Attached to bones In the walls of the heart In the walls of the intestine

7.

SEM 1, 2008


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8. Which of the following statements describes the cell R?

A It contains chloroplast to function in photosynthesis.

B It thickens in the secondary wall to support the plant.

C It transports food from leaves to the rest of plant.

D It carries water and some minerals up.

9. Which cells in the diagram involve in the transport of water in a plant?

A. I and II B. I and III

C. II and IV D. III and IV

10. Which of the following organs did not involved in regulating internal

environment?

SEM 1, 2008


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11. The diagram shows four different types of plant tissues.

What are tissues W,X, YandZ?

12. Which of these is the similarity between simple diffusion and osmosis?

A. Both processes need energy.

B. Both processes need carrier protein.C. Both processes involve the movement of water molecules.

D. The movement of molecules is down the concentration gradient for

both processes.

13.

SEM 1, 2008


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14. What is the function of cholesterol molecules in the plasma membrane ?

A. As membrane carriers to move substances across the plasma membrane

by active transport.

B. To form protein channels for facilitated diffusion of minerals ions.C. To join the proteins with phospholipids molecules.

D. To stabilize the fluidity of the plasma membrane.

15. The plasma membrane consists of molecules arranged in a double layer

shown in Diagram 6.

The parts labeled I and II are

A. Hydrophobic and hydrophilic respectively.B. Hydrophilic and hydrophobic respectively.

C. Both hydrophobic.

D. Both hydrophilic.

16. Which process results in the movement of water and minerals ions intoroot hair cells?

Water Mineral ions

A Active transport Osmosis

B Facilitated diffusion Osmosis

C Osmosis Facilitated diffusion

D Osmosis Active transport

17. Which of the following statements about the plasma membrane is true?

A. It allows only water to pass through it.

B. It does not allow any substances to pass through it.C. It allows only certain substances to pass through it.

D. It allows all substances to pass through it.

SEM 1, 2008


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BIO F4 TEST 1

18. Which of the following substances cannot be transported by simple

diffusion?

I. Carbon dioxide III. III. Glucose

II. Amino acids IV. Fatty acids

A. I and II only C. III and IV only

B. II and III only D. I and IV only

19. Which of the following cells are correctly matched with their functions?

20. Which of the structures labeled A, B,C, and D is involved in

osmoregulation?

SEM 1, 2008


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BIO F4 TEST 1

SECTION B

STRUCTURED QUESTIONS

[20 MARKS]

1. Figure 1 shows a freshwater unicellular organism, the Amoeba.

FIGURE 1

(a) (i) Name the structure labeled X.

______________________________________________________

[1 mark]

(ii) What is the function of X?

______________________________________________________

[1 mark]

(b) Explain the process carried out by X.

___________________________________________________________

_

___________________________________________________________

_

___________________________________________________________

_

[2 marks]

(c) Name the process in which Amoeba

Activity Name (Process)(i) excrete carbon dioxide

(ii) reproduce

(iii) engulf food particles

[3 mark]

(d) (i) Name the structure in Amoeba that helps it to move.

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______________________________________________________

[1 mark]

(ii) Explain how the structure named in (d)(i) plays its role.

_____________________________________________________

_

______________________________________________________

______________________________________________________

2.

Figure showing different mechanisms of transport across the plasma membrane.

(a) Name the types of transport labelled P, Q, R and S.

P : ______________________ S : __________________________

Q : ______________________

[3 marks]

b) Name the protein X and Z.

X : _____________________ Z: ___________________________

[ 2 marks]

c) Give two differences between Q and R.

______________________________________________________________________________________________________________________

___________________________________________________________

___[ 2 marks]

d) Give two examples of molecules that can be transported through P.

SEM 1, 2008


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BIO F4 TEST 1

___________________________________________________________

[2 marks]

SECTION CSTRUCTURED PRACTICAL

[21 MARKS]

1. A student carried out an experiment to study the effect of different concentrations

of sodium chloride solution on red blood cells within 30 minutes.

Test tube A Microscope Stop watch

Diagram 1(a)

SEM 1, 2008

Sodium

chloride

+Red bloodcells


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Diagram 1(b)

Diagram 1(a) shows the experiment set up by the student. Diagram 1(b) shows the red

blood cells under the microscope after being immersed in 0.15 M sodium chloride

solution (test tube A) for 30 minutes.The experiments were repeated at different concentrations of sodium chloride, 0.30 M,

0.45 M and 0.60M. Red blood cells were then immersed in test tube B (0.30 M), C (0.45

M) and D (0.60 M) respectively. The results are shown in Table 1.

SEM 1, 2008


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BIO F4 TEST 1

Test

tube

solution

Concentration of

Sodium chloride(M)

Red blood cells as seen under the

microscope.

Number of

crenated

red blood cells.

A 0.30

B 0.45

C 0.60

SEM 1, 2008

Normal redblood cell Crenated red

blood cell


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SEM 1, 2008


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BIO F4 TEST 1

(a) (i) Based on Table 1, state two observations on the relationship between the number

of crenated red blood cells and the concentration of sodium chloride solution.

1

__________________________________________________________________

__________________________________________________________________

2

__________________________________________________________________

_________________________________________________________________

_[3 marks]

(ii) State the inference which corresponds to the observations in (a)(i).

1__________________________________________________________________

__________________________________________________________________

2__________________________________________________________________

__________________________________________________________________

[3 marks]

(b)

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TABLE 3 [3 marks]

(c) State the hypothesis of the experiment.

____________________________________________________________________

_

____________________________________________________________________

_

[3 marks]

(e) (i) Record the number of crenated red blood cells in the box provided in Table 1.

Construct a table to record the results of this experiment. Your table must containthe following items:

- concentration of solutions

-Number of crenated red blood cells- percentage of crenated red blood cells

[3 marks]

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(ii) Based on the table constructed, draw a graph of percentage of crenated red blood

cells against the concentrations of sodium chloride solution in the graph paper.

[3 marks]

(f) Test tube B was left aside for 60 minutes. Explain the relationship between the

number of crenated red blood cells and time.

____________________________________________________________________

_

____________________________________________________________________

_

[3 marks]

SEM 1, 2008

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