Page 43 - Biology Form Two

Biology for Secondary Schools

(b) Which food substances are tested by the following tests?
(i) Biuret test
(ii) Grease spot test
(iii) Sudan III test
FOR ONLINE READING ONLY
11. Fill the gaps in the following table to show that the test is positive for the
type of food being tested.

Test Observation Inference
Biuret test
Emulsion
Benedict’s solution
Iodine solution

12. Imagine a teenager who primarily consumes fast food and sugary drinks.
(a) What potential nutritional deficiencies might arise from this diet?
(b) How could these deficiencies impact his or her physical and mental
development?

13. Consider an elderly person who has difficulty chewing and swallowing.
(a) How might this challenge affect their nutrient intake?
(b) What strategies could he/she implement to ensure he/she receives
essential vitamins and minerals?

14. A child is diagnosed with kwashiorkor, which requires a strict balanced
diet to recover.
(a) What nutrients might be lacking in his or her diet that resulted into this
condition?
(b) How can he/she obtain these nutrients from alternative food sources?

15. Picture a professional athlete who experiences fatigue and poor
performance despite following a strict training regime.
(a) What nutritional factors could contribute to his/ her symptoms?
(b) How might he/she adjust his/her diet to enhance energy levels and
recovery?

Student’s Book - Form Two
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05/10/2024 15:36:21
BIOLOGY FORM 2 NEW.indd 37
BIOLOGY FORM 2 NEW.indd 37 05/10/2024 15:36:21