Discussion: Human Tooth

GRADE 11 INTEGRATED SCIENCE TRINITY TERM 2021 REVIEW EXERCISE

ANSWER ALL QUESTIONS

Name: ___________________________________________________________________________

1. (a) Label ANY SIX structures on the following diagram of a human tooth. (3m)

2. On the top row of teeth in Michelles mouth there are two pretty teeth that are located right at the front and in the middle of the row. What is the name of these teeth? (1m) ______________

3. Explain the form of crop production known as: (4m)

(a) hydroponics – _______________________________________________________________

_________________________________________________________________

(b) organic farming ____________________________________________________________

___________________________________________________________

(d) crop rotation – ___________________________________________________________

___________________________________________________________

4. Name one OTHER form of crop production besides those mentioned in question 3 . (1m)

____________________________________________

5. Name two types of micro-organisms studied in this class. (2m)

_________________________________ and _______________________________

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6. What is another nutrient besides protein that feeds microorganisms? (1m) _________

7. List three conditions that encourage the growth of microorganisms. (3m)

___________________________________________________________________________

8. Public Health Officials consider mosquitoes are a type of vector. Why? (1m)

___________________________________________________________________________

9. Ticks can sometimes be found on the skins of animals and are examples of parasites. What is a parasite? (1m)

____________________________________________________________________________________________________________________________________________________________

10. Rodents, e.g. rats, are examples of pests. What is a pest? (1m)

____________________________________________________________________________________________________________________________________________________________

11. Do you think that the microorganism related to Covid-19 is an example of a pathogen? (1m)

________________________________

Give a reason for your answer. (1m)

____________________________________________________________________________________________________________________________________________________________

12. List two ways of preserving food. (2m)

______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

13. NAME one food preservative that: (2m)

(a) does not change the taste of food. _______________________________________________

(b) prevents microorganisms from multiplying. _______________________________________

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14. The picture below is of a nice clean kitchen. List THREE examples of pests that will NOT be attracted to this kitchen. (3m)

Diagram Description automatically generated

__________________________________________________________________________________________________________________________________________________________________________

END OF REVIEW EXERCISE

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