“lubb” sound is produced due to___________________?

Related Mcqs:

1. “lub” sound is produced after _________ ?

   A. The ventricles are fully contracted
   B. The ventricles start to relax
   C. The bicuspid and tricuspid valves suddenly close
   D. The semilunar valves are closed

   Submitted by: Rashid Mehmood

2. Variety among amino acids is produced due to_____________?

   A. NH2 group
   B. COOH group
   C. R group
   D. All of these

3. Grave’s disease is produced due to____________?

   A. Undersecretion of thyroxin
   B. Overproduction of thyroxin
   C. Undersecretion of corticosteroids
   D. Overproduction of corticosteroids

4. At level above _____ , sound turns into harmful noise pollution?

   A. 80db
   B. 30db
   C. 100db
   D. 120db

   Submitted by: Eesha Khalid

5. How many moles of carbon dioxide are produced by complete oxidation of one mole of puruvic acid?

   A. 1
   B. 2
   C. 3
   D. 6

6. Pepsinogen is produced from__________?

   A. Mucous cells
   B. Parietal cells
   C. Zymogen cells
   D. All of these

7. In life cycle of Pinus megaspores produced by megasporangium divide into 4 megaspores by__________________?

   A. Mitosis
   B. Meiosis
   C. Both depending upon the conditions
   D. None of these

8. The glycolate produced diffuses into the membrane bounded organelles called____________?

   A. Glyoxisomes
   B. Peroxisomes
   C. Lysosomes
   D. Mitochondria

9. The number of daughter paramecia produced following conjugation is _______ ?

   A. 8 from one conjugant
   B. 8 from two conjugants
   C. 16 from two conjugants
   D. 8-16 from two conjugants

   Submitted by: Rashid Mehmood

10. The first transgenic plant to be produced is__________?

    A. Brinjal
    B. Tobacco
    C. Rice
    D. Cotton

    Submitted by: Maria Aziz