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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
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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.
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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?
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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.
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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.
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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?
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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.
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[1 mark]
(ii) What is the function of X?
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[1 mark]
(b) Explain the process carried out by X.
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[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.
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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.
______________________________________________________________________________________________________________________
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___[ 2 marks]
d) Give two examples of molecules that can be transported through P.
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[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)
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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.
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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
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Normal redblood cell Crenated red
blood cell
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(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
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2
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_[3 marks]
(ii) State the inference which corresponds to the observations in (a)(i).
1__________________________________________________________________
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2__________________________________________________________________
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[3 marks]
(b)
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TABLE 3 [3 marks]
(c) State the hypothesis of the experiment.
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[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.
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[3 marks]
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