Get premium membership and access revision papers with marking schemes, video lessons and live classes.
  OR
Processing. Please wait.

 Form 1 Biology topical questions and answers on the cell

State one way in which each of the following is naturally adapted to its function:
(a) Neurone.
(b) Mitochondrion

 (2m 12s)
977 Views     SHARE

Download as pdf file

Answer Text:
a)- Large cell body that controls cell activities.
- Has many extensions i.e dendrites, axons and dendrons that receive and send impulses from one part of the body to another.
- Has myelin sheath or medullated sheath which is fatty sheath that encloses the axon hence insulate the axon and impulses.
- Has Schwann cells that are in close contact with axon and they secrete the myelin sheath.
- Myelin sheath has constrictions at intervals –called nodes of Ranvier to propagate the nerve impulse and speed up the transmissions of an impulse.
b)- Inner membrane is greatly folded to form cristae which increase surface area for respiratory activity.
- Matrix contains enzymes that catalyzes the rate of reaction.


|