Page 40 - General and Inorganic Chemistry for Advanced Secondary Schools Students Book Form Five and Six

Biology for Secondary Schools

Educate your friend on how to address the challenges faced in order to
obtain a clear image of the plant cells.
5. Biology students were assigned to observe the external features of a variety
of preserved specimens.
FOR ONLINE READING ONLY
(a) Mention the sense organ that the students would primarily use, and
explain its function.
(b) Give one disadvantage of using sense organs to make observations.

6. Why is it important for scientists to use a standard system of measurement?

7. Name the instrument you would use to measure the following and state
their corresponding SI units.

(a) Time
(b) Mass
(c) Temperature
(d) Length

8. (a) Convert the following temperatures into degrees Fahrenheit

(i) 36 °C (ii) 40 °C
(b) Convert the following temperatures into kelvin
(i) 100 °C (ii) 0 °C
(c) Convert the following temperatures into degrees Celsius
(i) 57 K (ii) 273 K (ii) 142 °F (iv) 43 °F

(d) How many millimetres are in
(i) 1 cm? (ii) 1 m?
(e) Convert the following into metres

(i) 300 mm (ii) 5500 cm
9. Imagine you are a student. Your Biology teacher has tasked you to measure

the length and width of a leaf.
(a) What instruments would you use to ensure accurate measurements?
(b) What steps would you follow to obtain reliable data?

10. As a biologist, you have observed that children in your village are getting
frequent fever accompanied with vomiting and headaches. This is not

observed in a neighbouring village where there is wide use of mosquito

34 Student’s Book Form One Student’s Book Form One

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