Grade 9 Biology chapter 5

Welcome to your Grade 9 Biology chapter 5

After carefully reading the following 30 questions, choose the correct answer.

1. 
What is the scientific definition of nutrition?

2. 
Which type of nutrient is primarily responsible for providing the body's main source of energy?

3. 
What is a balanced diet?

4. 
Which group of people requires a diet particularly high in protein for growth and development?

5. 
Scurvy is a deficiency disease caused by a lack of which vitamin?

6. 
What condition results from a lack of iron in the diet?

7. 
Which of the following is defined as a state of poor health caused by an unbalanced or insufficient diet?

8. 
Which feeding habit is most likely to lead to obesity?

9. 
What is the term for the harmful use of substances like alcohol, tobacco, and drugs?

10. 
Which of these is a non-infectious disease?

11. 
Infectious diseases are primarily caused by which of the following?

12. 
What is a common mode of transmission for infectious diseases?

13. 
Which mineral is essential for the formation of strong bones and teeth?

14. 
A lack of Vitamin A in the diet typically results in which condition?

15. 
Why do nursing mothers need a special diet?

16. 
Which substance in tobacco is highly addictive and affects the nervous system?

17. 
What is a psychological effect of long-term substance abuse?

18. 
Which nutrient is required for the repair of body tissues?

19. 
Rickets is primarily caused by a deficiency of:

20. 
What role does fiber play in the human diet?

21. 
Which of these is a social consequence of alcohol abuse?

22. 
People living with HIV/AIDS require a diet high in energy and protein to:

23. 
Goiter is an enlargement of the thyroid gland caused by a lack of:

24. 
Which type of disease cannot be passed from one person to another?

25. 
Athletes require a diet high in carbohydrates to:

26. 
Which of the following is a symptom of Marasmus?

27. 
Kwashiorkor is primarily caused by a severe deficiency of which nutrient?

28. 
What is the best way to prevent most infectious diseases?

29. 
Which organ is most directly damaged by excessive, long-term alcohol consumption?

30. 
What is the main purpose of fats in the diet?

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