Actin and myosin are the basic proteins involved in contractile machinery of our body to which type of proteins do they belong____________?

Related Mcqs:

1. If a cross section of a sarcomere is seen, each myosin is surrounded by how many actin molecules:

   A. 9
   B. 5
   C. 6
   D. 7

2. Detachment of myosin head and actin in rigor mortis occurs due to__________?

   A. stored ATP in body
   B. hypercalcemia
   C. autolysis in body
   D. hyperactivity of mitochondria

   Submitted by: Maryam Aftab

3. A smallest contractile unit of muscle contraction called sarcomere is the area between two:

   A. H- zone
   B. M- Line
   C. Z- Line
   D. A band

4. In a hot summer after noon, if your body’s Homeostatic machinery keep your internal temperature quite lower than that of external than this is an example of____________?

   A. Positive feed back
   B. Negative feed back
   C. Feed back
   D. Osmoregulation

5. What happens during muscle contraction to the length of each myosin and action filament?

   A. Z- lines get closer
   B. A band becomes short
   C. 1 band elongates
   D. There is no change in sarcomere

6. The element in basic structure of proteins which differentiate them from carbohydrates________?

   A. C
   B. S
   C. H
   D. N

7. Antibodies play important role against microorganisms and other pathogens to which type of proteins do they belong________?

   A. Globular proteins
   B. Fibrous Proteins
   C. Both a and b
   D. None of these

8. Proteins are made from amino acids by the process of ______________?

   A. Hydrolysis
   B. Pinocytosis
   C. Dehydration synthesis
   D. Active transport

9. Proteins are polymers of___________?

   A. Fatty acids
   B. Isoprenoid units
   C. Amino acids
   D. Nucleotides

10. Carbohydrates, fats & proteins are essential for_______________?

    A. Metabolic processes of an organism
    B. Providing energy
    C. Formation of sturctures
    D. All of these