Which of the following diseases is an auto-immune disorder?

1.	Myasthenia gravis	2.	Arthritis
3.	Osteoporosis	4.	Gout

Match the following joints with the bones involved:

Select the correct option from the following:

Which of the following hormones can play a significant role in osteoporosis?
1. Estrogen and Parathyroid hormone
2. Progesterone and Aldosterone
3. Aldosterone and Prolactin
4. Parathyroid hormone and Prolactin

Which of the following is not a feature of skeletal muscles?
1. Are associated with skeletal components of the body
2. Striped appearance
3. Voluntary control
4. Transportation of food through digestive tract

How many polypeptide chains are present in one
subunit of a myosin filament?

1. 2 heavy chains and 2 light chains.
2. 2 heavy chains and 4 light chains.
3. 4 heavy chains and 2 light chains.
4. 4 heavy chains and 4 light chains.

Which of the following bone of the skull is not present
in pair?

1. Temporal bone 

2. Sphenoid bone

3. Zygomatic bone 

4. Maxillary bone

In a myosin molecule HMM (heavy meromyosin) is
present in
(i) Globular head (ii) Short arm (iii) Myosin tail

1. (i), (ii), (iii) 

2. (i) only

3. (i), (ii) only 

4. (iii) only

The number of which of the following would normally be equal in human skeleton?
1. Vertebrochondral ribs and digits in both upper limbs
2. Bones in cranium and the facial skeleton
3. Carpals and tarsals
4. Vertebrosternal ribs and digits in one lower limb

Identify the incorrectly matched pair:

If production of pyruvic acid by anaerobic metabolism in a muscle is faster than it can be utilized, the surplus is converted to:
1. lactic acid
2. adenosine diphosphate
3. carboxylic acid
4. creatine phosphokinase