Question

Short/ Long answer type questions.
Give four differences between red and white muscle fibres.

Answer 1

Red muscle fibres	White muscle fibres
Dark red in colour due to the presence of more myoglobin.	Lighter in colour as they do not contain myoglobin.
Mitochondria more in number.	Mitochondria are less in number.
More blood capillaries.	Fewer blood capillaries.
Have a slow rate of contraction for longer periods.	Have a fast rate of contraction for short periods.

Example of red muscle fibres: flight muscles of kites and extensor muscles of the human back

Example of white muscle fibres: eyeball muscles, flight muscles of a sparrow.