Term 3 Form 1 Biology Exam Paper

Term 3 Form 1 Biology Exam Paper

ANSWER ALL THE QUESTIONS IN THE SPACES PROVIDED.

1. Define
2. a) Microbiology (1mk)

 

1. b) Biotechnology? (1mk)

 

2.a)  What is active transport.                                                                                   (1mk)

 

1. b) Outline two roles of osmosis in plants. (2mks)

 

3. A motor cycle and a human being have one thing in common. Both can move from one place to another. State three characteristics of living things that a motor cycle does not possess. (3mks)

 

4. The structure below represents an organelle found in some plant cells. Study it carefully to answer the questions that follow.

1. a) Name the organelle. (1mk)

 

1. b) Identify the structures labeled X and Y. (2mks)

X

Y

1. c) Name the process that occurs in each of the parts labeled X and Y. (2mks)

X

Y

5. Some form one students wanted to collect animals for study during the biology lesson. State the suitable apparatus they should have used to collect the following:
6. a) Butterflies  (1mk)
7. b) Termites on a bark of a tree  (1mk)
8. c) Spiders on a wall ( 1mk)
9. Define the following terms (3mks)
10. a) Heterotrophism

1. b) Autotrophism

1. c) Parasitism

7. Explain why viruses are not regarded as living things (3mks)

The photograph above represents an organ from a green plant.

1. a) Identify the organ (1mk)
2. b) Name the parts labelled K and L (2mks)

 

1. c) State the role of the structures labelled M (1mk)

Term 3 Form 1 Biology Exam Paper

9.The diagram below represents a cell.

(a)Name the parts labeled X and Y                                                                       (2mk)

X

Y

 

(b)Apart from the structures labelled in (a) above, name one structure  which is normally present in this cell but absent in animal cell.                                                                (1mk)

 

10. Arrange the following in an ascending order, i.e. starting from the smallest to the largest:

Organ, cell organelle, organism, organ system, cell, tissue                                             (2mks)

Term 3 Form 1 Biology Exam Paper

11. Give the functions of the following parts of the microscope. (3mks)
12. a) Fine adjustment knob
13. b) Mirror
14. c) Eye piece lens
15. John, a form one student, wrote down the specific name of a certain organism as Balanusbalanoides Linnaeus.
16. a) State two principles of binomial nomenclature that were followed correctly (2mks)

 

1. b) Give one mistake that he committed while writing the name and suggest how it can be corrected (2mks)

 

13. The diagrams below represent tissues from different organisms.

A

B

 

 

C

1. a) Identify them. (3mks)

A

B

C

1. b) Give the function of each tissue(3mks)

A

B

C

14. State the function of the followingorganelles:
15. a) Lysosome _(1mks)
16. b) Golgi apparatus(1mk)
17. c) Centriole (1mk)

Term 3 Form 1 Biology Exam

15. Two living cells were put in different solutions and observed under a light microscope. Observations were made after every 20 minutes. The diagrams below shows the changes that occurred in the cells with time. Study them carefully to answer the questions that follow.

 

1. a) Name the physiological process being tested. (1mk)

 

1. b) Identify the type of cells used in this investigation.

(1mk)

 

1. c) What is the name given to the process that occurred in

I    (1mk)

II   (1mk)

1. d) Suggest the type of solutions that the cells in I and II were put in (2mks)

I

II

1. e) Explain what happened to the cell in each case

I (1mk)

 

II(1mk)

 

16. Differentiate between hydrolysis and condensation (2mk)

 

17. State four ways of keeping teeth healthy. (4mks)

 

18. The diagram below represents a green leaf with white patches. An experiment was carried outon the leaf to find out a certain factor of photosynthesis.

1. a) Suggest the factor being investigated (1mk)

 

1. b) What was the reagent used to test for starch? (1mk)

 

1. c) What was the observation made at the end of the experiment on the
2. i) Green patches __ (1mk)
3. ii) White patches __ (1mk)
4. d) Explain the results obtained in (c) above on (2mk)

i)Green patches

 

1. ii) White patches

 

19. Differentiate between artificial classification and modern classification. (2mk)

 

20. Studying biology enables a student pursue a career, give three other ways that a student can benefit in studying the subject. (3mks)

 

21. Name three examples of polysaccharides found in plants. (3mks)

 

22. Gastric juice is produced from the wall of the stomach.
23. a) Name the gland that produces the juice.   (1mk)

 

1. b) Apart from enzymes, name two other components of gastric juice (2mks)

1. c) State one function of each of the components named in (b) above.                   (2mks)

 

23. The diagram below shows the formation of lipids.

1. a) State the name given to the process represented by the arrow.(1mk)

 

1. b) Identify the components labeled A and B                                                               (2mks)

A_

B_

1. c) State three properties of lipids.                                                                                    (3mks)

 

24. The general formula for carbohydrates is (CH₂ O)_n.
25. a) Name three elements represented in this formula.                                                      (3mks)

 

1. b) What does letter n represent? (1mk)

 

25. The diagram below represents a transverse section of the gut wall of a mammal.

1. a) Name the parts labelled J, K and L. (3mks)

J__

K_

L_

1. b) State the name given to the wave of contraction of gullet wall muscles (1mk)

 

26. Outline three factors that determine the energy requirements in humans. (3mk)

 

27. The diagram below represents an animal jaw.

Paid for papers will have the diagram

1. a) Work out the dental formula of the animal (2mk)

 

1. b) Suggest the mode of nutrition of the animal (1mk)

 

1. c) State the name given to an animal with different types of teeth. (1mk)

 

1. d) Give two observable features of the teeth labelled
2. i) Incisors                 (2mks)
3. ii) Molars                                                             (2mks)

 

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