10th Class Biology 3rd Quarter Book Paper

Q1. Multiple choice questions (Attempt all · 12 × 1 = 12)

1. If farmers mostly grow GM crops, traditional and naturally diverse varieties might become ......

   1. Common and cheap

   2. Stronger and healthier

   3. Rare

   4. Poisonous

2. Which nitrogenous base is found in RNA instead of the thymine found in DNA?

   1. Adenine

   2. Cytosine

   3. Uracil

   4. Guanine

3. The mode of transmission for Escherichia coli is:

   1. Air droplets

   2. Skin contact

   3. Contaminated food or water

   4. Mosquito bite

4. In genetic engineering, "recombinant DNA" means:

   1. Natural DNA

   2. DNA copied by mistake

   3. DNA joined from two sources

   4. DNA destroyed by enzymes 

5. The overall flow of genetic information from DNA to RNA to protein is known as the ......

   1. Base pairing

   2. Central dogma

   3. Helical model

   4. Transcription phase

6. Lyme disease is transmitted to humans through the bite of:

   1. Birds

   2. Ticks (Ixodes)

   3. Bees

   4. Bats

7. Yeast plays a crucial role in:

   1. Bread making

   2. Ethanol Production

   3. Both a and b

   4. None of these

8. Chromatin material is made of:

   1. Protein

   2. DNA

   3. RNA and Protein

   4. DNA and Protein

9. Escherichia coli (E. coli) bacteria primarily cause:

   1. Athlete's Foot 

   2. Food Poisoning

   3. Strep Throat

   4. Malaria 

10. Which biofules are produced in industrial biotechnology?

    1. Ethanol

    2. Biodiesel

    3. Biogas

    4. All of these

11. Each nucleotide of DNA is made of:

    1. Deoxyribose sugar

    2. Phosphate group

    3. Nitrogenous base

    4. All of these

12. Which of the following is a major cause of non-infectious diseases?

    1. Pathogens

    2. Heredity

    3. Bacteria

    4. Fungi