(ix) The role of the optimum temperature in cellular activities is to
A change the chemical reactions
B balance the equilibrium of the reactions
C destroy many enzymes at once
D speed up the rate of chemical reaction
E create favourable environment for enzymes
(x) Rise of body temperature in the human body is corrected mainly by
A Dilating the skin arteries and sweating
B Constricting the skin arteries and shivering
C Dilating the skin veins and sweating
D Constricting the skin veins and shivering
E Dilating of arteries and shivering
2. Match the responses in List B with the phrases in List A by writing the letter of the correct response
from List B beside the item number of List A in your answer booklet.
LIST A LIST B
(i) Receives impulses and gives appropriate response to stimuli.
(ii) A gap through which impulses pas when traveling from one
neuron to another.
(iii) Receives impulse from the external stimuli and transmits it to
the spinal cord.
(iv) Controls and coordinates body balancing organs, thus making
accurate movement possible.
(v) The nervous pathway taken by an impulse in a reflex action.
(vi) Transmits impulse away from the spinal cord.
(vii) Controls involuntary actions such as heart beats, breathing,
sneezing and swallowing.
(viii) Transmits impulses within the spinal cord.
(ix) Concerned with reasoning, intelligence and judgment.
(x) Controls the pituitary gland.
A. Synapse
B. Effectors
C. Hypothalamus
D. Biceps Muscles
E. Motor neuron
F. Peripheral nervous
system
G. Central nervous
system
H. Medulla oblongata
I. Reflex arc
J. Reflex neuron
K. Cerebellum
L. White matter
M. Cerebrum
N. Sensory neuron
O. Affector
