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

Related Mcqs:

1. Rigor mortis i.e, stiffening of body after death results from__________?

   A. Accunulation of rigid proteins molecules in sarcoplam.
   B. Unavailability of ATP, which is necessary to break the link between actin and myosin.
   C. Decrease in body temperature after death.
   D. Death of tissue due to unavailability of O2.

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

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

3. 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

4. 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

5. cataracts is a disease which is due to__________?

   A. Opacity of Cornea
   B. Opacity of lens
   C. None
   D. None of these

   Submitted by: Rizwan Abbasi

6. Ozone depletion occurs commonly due to_______________?

   A. Carbon dioxide
   B. Chlorofluorocarbons
   C. UV rays
   D. Deforestation

7. Muscle fatigue occurs due to accumulation of___________?

   A. Acidic acid
   B. Butyric acid
   C. Citric acid
   D. Lactic acid

   Submitted by: Babar Ali Kunbhar

8. Snails belong to__________?

   A. Cephalopodsxc
   B. Gastropods
   C. Bivalves
   D. Athropods

9. Artherosclerosis is a major condition leading to__________?

   A. heart attack
   B. hypertension
   C. stroke
   D. tumor

   Submitted by: Maryam Aftab

10. Accumulation of lipid molecules in brain cells lead to__________?

    A. paralysis
    B. oedema
    C. mental retardation
    D. all of these

    Submitted by: Maryam Aftab