Class 5 General Science (G.Sc.) Notes: - Solved Activities of Unit-2: Microorganisms

General Science (G.Sc.) Class 5 Notes

Based on the Single National Curriculum, PK

(New Book/New Syllabus for 2023-2024 Exams and onward)
National Book Foundation
as
Federal Textbook Boards, Islamabad
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Activity 2.4: Page 27 Useful Role of Microorganisms

1. In which pot, did the dough rise?

Ans: The pot with yeast in it will rise.

2. What is the reason?

Ans: Yeast releases CO₂, which helps to raise the dough.

3. Why was sugar added along with yeast?

Ans: Sugar was added to increase the rate of producing CO₂.

4. Which dough will be used to make bread?

Ans: The dough with yeast.

5. What is yeast?

Ans: Yeast is a microscopic fungus.

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Activity 2.5 Page no. 28 Preventing the Infections

Q: What are the five ways to prevent infections?

Ans:

1. Wash hands regularly with soap especially before eating food and after using the toilets.

2. Avoid touching the eyes, nose, and mouth.

3. Get vaccinated on time.

4. Stay home, if you have symptoms of infections.

5. In case of any injury, cover the wound and go to the doctor immediately.

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