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Punjab 12th Class Biology and Human Welfare Mcqs Test Online

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Question 1 of 15

Biology

1. Polio virus lives in the _________ of man.

1.Mouth and intestine

2.Stomach and intestine

3.Throat and intestine

4.Mouth and throat

Question 1 of 15

Question 2 of 15

2. High value of BOD (Biochemical Oxygen Demand) shows

1.Water is normal

2.Water is highly polluted

3.None of these

4.Water is less polluted

Question 2 of 15

Question 3 of 15

3. Biogas is

1.Ecofriendly and pollution free source

2.Methane rich fuel

3.Propane rich fuel

4.Both a and c

Question 3 of 15

Question 4 of 15

4. A bioreactor is

1.Fermentation tank

2.Hybridoma

3.Culture for synthesis of new chemicals

4.Culture containing radioactive isotopes

Question 4 of 15

Question 5 of 15

5. Rennet is used in

1.Bread making

2.Cheese making

3.Antibiotics synthesis

4.Fermentation

Question 5 of 15

Question 6 of 15

6. Tissue plasminogen activator is

1.A chemical that stimulates tissue differentiation

2.Amino acid

3.A vitamin

4.An Enzyme

Question 6 of 15

Question 7 of 15

7. Which of the following is fermentation process?

1.Both a and b

2.None of these

3.Batch process

4.Continuous process

Question 7 of 15

Question 8 of 15

8. Measles is an infectious viral disease that occurs most often in:

1.Winter and rainy days

2.Late winter and autumn

3.Late winter and spring

4.Late winter and summer

Question 8 of 15

Question 9 of 15

9. Spirulina is a:

1.Bio fertilizer

2.Edible fungus

3.Bio pesticide

4.Single cell protein

Question 9 of 15

Question 10 of 15

10. The discovery that led to the development of first antibiotic was made by

1.Jenner

2.Fleming

3.Pauling

4.Pasteur

Question 10 of 15

Question 11 of 15

11. Hybridization in plants is the technique of introducing desirable species into a hybrid by means of:

1.Emasculation

2.Selection

3.Pollination

4.Micro propagation

Question 11 of 15

Question 12 of 15

12. Who showed that Saccharomyces cerevisiae causes fermentation forming products such as beer and butter milk?

1.Selman Waksman

2.Alexander Fleming

3.Schatz

4.Louis Pasteur

Question 12 of 15

Question 13 of 15

13. The artificial active immunity is achieved by injecting small amount of antigen called:

1.Vaccine

2.Serum

3.Antibodies

4.Toxin

Question 13 of 15

Question 14 of 15

14. The best way to prevent a tetanus is:

1.Vaccination

2.Antibiotic

3.Cleanses

4.Medication

Question 14 of 15

Question 15 of 15

15. Which of the following is/are the method of crop improvement?

1.Hybridization

2.Polyploidy breeding

3.Selection

4.All of these

Question 15 of 15

Test By Subject	Punjab
Test By Topics	12th Class Biology

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Punjab 12th Class Biology and Human Welfare Mcqs Test Online

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Punjab 12th Class Biology and Human Welfare Mcqs Test Online