Each turn of DNA contain ____________ nitrogenous base pairs?

Related Mcqs:

1. Which organelles contain its own DNA?

   A. nucleus
   B. mitochondria
   C. chloroplast
   D. All of these

   Submitted by: Kiran Zafar

2. Which of the following cell organelles does not contain DNA?

   A. Nucleus
   B. Lysosomes
   C. Chloroplast
   D. None of these

   Submitted by: Nayab Idrees

3. The main nitrogenous waste formed in the body of earthworm is/are___________?

   A. Ammonia
   B. Urea
   C. Uric acid
   D. Trimethylamine oxide

4. Aquatic animals excrete nitrogenous waste commonly in the form of_____________?

   A. Ammonia
   B. Urea
   C. Uric acid
   D. Trimethylamine oxide

5. Which of the following animal excrete nitrogenous waste mainly as uric acid?

   A. Hydra
   B. Planaria.
   C. Humans
   D. Birds.

6. The elimination of toxic nitrogenous waste and excess water in man is by______?

   A. Excretion
   B. Circulation
   C. Reproduction
   D. Pollution

   Submitted by: Yousuf Sanjrani

7. Bacteria protect themselves from viruses by fragmenting viral DNA with ____________?

   A. Ligase
   B. Endonuclease
   C. Exonuclease
   D. Gyrase

   Submitted by: Maria Aziz

8. Genes will not be found in gene pairs in the_____________?

   A. Muscle cell of worm
   B. Uterine cells of dog
   C. Sperm cells of frog
   D. Guard cells of leaf

9. Number of pairs of cranial nerves is__________?

   A. 10
   B. 11
   C. 12
   D. 13

10. Which of the following pairs of fins in a fish body are paired?

    A. Dorsal and ventral.
    B. Pectoral and Pelvic.
    C. Tail and anal
    D. All of these