Locomotion and ...

Which of the following statements is/are incorrect about sliding filament theory of muscle contraction?

Read the following statements about muscle contraction in humans :

i. chemical energy is converted into mechanical energy during muscle contraction and the chemical is a neurotransmitter.
ii. a neurotransmitter acetylcholine at motor end plate converts electrical energy into mechanical energy.
iii. in a contracted muscle, volume remains the same.
iv. a contracted muscle becomes shorter and thicker.

Myoglobin is found to be :

i. highly abundant in muscles of whales and seals .
ii. exhibiting cooperative binding of oxygen.
iii. allowing organisms to hold their breathe longer underwater.

The property which doesn’t belong to muscle fibres is :

A meromyosin molecule doesn’t contain :

A functional G-Actin molecule in its free state is bound to :

Muscles are attached to bones via :

Discovery of actin is credited to 

The correct organisation of skeletal muscle is 

Study of muscles is called :