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Form 1 Biology End of Term 2 Examination 2022

Class: Form 1

Subject: Biology

Level: High School

Exam Category: Form 1 End Term 2 Exams

Document Type: Pdf

    

Views: 863     Downloads: 29

Exam Summary

1. State the role of the following elements to the growth and development of plants (2mks)
(i) Calcium
(ii) Nitrogen

2. (a) Define the following terms:- (2mks)
(i) Species:
(ii) Binomial nomenclature:-

3. For a leaf to be efficient for photosynthesis it has to be broad and flat. Explain (2mks)

4. State the functions of the following organelles:
(a) Lysosomes:- (2mks)
(b) Golgi apparatus:-

5. What is the significance of active transport in the human body. (2mks)

6. State the name given to the study of (2mks)
(i) Insects
(ii) Classification of living organisms.

7. Name the products of complete hydrolysis of sucrose. (1mk)

8. (a) State the formula for calculating linear magnification of a specimen when using a hand lens. (1mk)
(b) Give one functional advantage of use of the following microscopes. (2mks)
(i) Light Microscope ……………………………………………………………………………………………
(ii) Electron Microscope. ……………………………………………………………………………………………

9. An investigation was set up as shown in the diagram below.
9.png
After 30 minutes, starch suspension had turned blue-black while iodine solution retained its colour.
(a) Name the physiological process that was being investigated in the experiment. (1mk)
………………………………………………………………………………………………
(b) Account for the results observed after 30 minutes. (3mks)

10. Define the term osmosis. (2mks)

11. The reaction represented by equation below occurs in the body
Hydrogen peroxide --------->Z Oxygen + Water
(a) Name enzyme Z (1mk)
………………………………………………………………………………………………
(b) State the biological importance of the reaction above (1mk)

12. State how the cell below is specialized to carry out their functions
A sperm cell (1mk) ……………………………………………………………………………………………

13. Name the bond that exists between amino acids during condensation process of forming proteins? (1mk)
……………………………………………………………………………………………………… ………………………………………………………………………………………………………

14. Some form one students wanted to collect the following animals for study in the Laboratory. State the suitable apparatus they should use.
i) Crawling stinging insects .................................................... (1mark)
ii) Small animals from tree barks ................................................... (1mark)

15. Study the diagram below and answer the questions that follows
10.png
(a) Identify the structures labeled A and B (2marks)
A …………………………………………… B……………………………………………..
(b) What process takes place in the parts labeled A and B (2mark)

16. A student estimated the diameter of a field of view to be 2.8mm. The diameter was occupied by four onion cells. Estimate in micrometers the diameter of onion cell. Show your working. (2 marks)

17. The diagram below represents a set up that was used to investigate a certain process in a plant.
11.png
(a) State the process that was being investigated. (1 mark)
(b) Other than the factors shown, state two factors that would affect the process named in (a) above. ( 2 mark)

18 .Write the role of the following parts of microscope. (3marks)
(i)Mirror .
(ii)Diaphragm
(i)Coarse adjustment knob

19. Explain why plant cells do not burst when immersed in distilled water. (1mk)

20.The diagram below represents a cell
12.png
(a)Name the parts labeled X and Y (2marks) X........................................................................................................................... Y..........................................................................................................................
b) State why the structures labeled X would be more on one side than the other side.(1mark)

21. How does diffusion gradient increase the rate of diffusion? (1mark)

22. Differentiate between Botany and Zoology (2 mks)

23. Motor vehicle move, use energy and produce Carbon (IV) oxide and water similar characteristics occur in living organisms yet motor vehicles are not classified as living organism. Explain (2 mks)

24. List skills that are gained on studying Biology (2 mks)
………………………………………………………………………………………………….. ……………………………………………………………………………………………………

25. Explain the importance of doing the following when testing a leaf for starch (3 mks)
i) Boiling the leaf in water ………………………………………………………….
……………………………………………………………………………
ii) Boiling in the methylated spirit in water bath ………………………………………………
………………………………………………………………………………..
iii) Placing a potted plant in the sun for 5 hours

26. a) Complete the table given below. (2 mks)
13.png
b) State two activities of the cell that are controlled by nucleus (2 mks)

27.Identify the specialized cell illustrated below (1 mk)
14.png
i) ………………………………………………. (1 mk)
ii)Name the parts labelled. (2 mks)
A…………………………………..
B…………………………………..

28. State the function of each of the following tissues
i) Meristematic (1 mk)
………………………………………………………………………………….. …………………………………………………………………………………..
ii) Blood (1 mk)
…………………………………………………………………………………… …………………………………………………………………………………….

29. Differentiate between plasmolysis and crenation (2 mks)
…………………………………………………………………………………………….

30. The scientific name of an onion is Allium cepa Identify the genus and the species to which the
organism belongs (2 mks)
a)genus………………………………………………………………………………..
species………………………………………………………………………………
b) Outline two functions of carbohydrate in living organism (2 mks)
………………………………………………………………………………………………… ………………………………………………………………………………… …………………………………………………………………………………………
c) What are the building blocks of proteins (1 mk)
………………………………………………………………………………………… ………………………………………………………………………………………….
d) Name the monosaccharides that make up the following substances
i)Sucrose………………………. (1 mk)
ii)Lactose ………………………….

31.The diagrams below represents common equipment used by Biologists
15.png
a)Identify the equipment.
b)State two necessary precautions to be observed when collecting specimens (3 mks)

32. Name the carbohydrate that is
i) Stored in plant seeds (1 mk) ………………………………………………………………………
ii) Stored in mammalian muscles (1 mk) ………………………………………………………………………
iii) Most abundant in human blood (1 mk) ………………………………………………………………………

33. A group of students set up the experiment below to investigate a certain physiological process
16.png
i) Name the physiological process being investigated (1 mk)
………………………………………………………………………………………
ii) Account for the results in set-up A and B
iii) What was the purpose of set-up C? (1 mk) …………………………………………………………………………………. …………………………………………………………………………………..

34.Name two structures found in plant cell that are absent in animal cell (2 mks)

 

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