1.
The by-products of respiration are
carbon dioxide and heat
carbon dioxide and water
oxygen and heat
oxygen and water
2.
Which of the following pairs of structures are parts of the respiratory system of humans?
Fallopian tube and alveoli
Pharynx and esophagus
Trachea and alveoli
Trachea and duodenum
3.
The primary purpose of respiration in man is to
I. take in oxygen.
II. release carbon dioxide.
III. regulate body temperature.
I, II and III
I and II only
II and III only
I and II only
4.
Which of the following statements about aerobic and anaerobic respiration is not correct?
Water is produced as a by-product in anaerobic respiration.
Alcohol or lactic acid is produced in anaerobic respiration.
No oxygen is required in anaerobic respiration
Very little energy is released in anaerobic respiration.
5.
The portion of air which is used in burning is
nitrogen
water vapour
oxygen
carbon dioxide
6.
Which of the following is used by green plants for respiration?
Carbon dioxide
Oxygen
Light
Water
7.
A patient who coughs and spits out blood may be suffering from
asthma
pneumonia
measles
tuberculosis
8.
What do human beings obtain from food to enable them work?
Blood
Energy
Vitamins
Proteins
9.
Which of the following gases enable burning to take place?
Oxygen
Carbon dioxide
Hydrogen
Ammonia
10.
Which of the following is the function of the hair in the nose? It
keeps the nose warm
makes breathing easier
keeps the nose moist
prevents carbon dioxide from entering the body
11.
Which of the following is the percentage composition of oxygen in the air?
0.03
1
21
78
12.
Which of the following food substances is not oxidized during respiration?
Fatty acids
Amino acids
Glucose
Cellulose
13.
Which of the following are products of respiration?
Glucose and oxygen
Waste food, energy and carbon dioxide
Energy, carbon dioxide and water
Energy, oxygen and water
Carbon dioxide and oxygen
14.
The part of air which supports burning is
nitrogen
inert gas
water vapour
oxygen
15.
Which of the following diseases affects the lungs?
Cholera
Measles
Tetanus
Tuberculosis
16.
17.
Which of the following gases support combustion?
Carbon dioxide
Carbon monoxide
Hydrogen
Nitrogen
18.
The process of respiration could be represented by the following equation:
Glucose + oxygen → water + carbon dioxide + X.
What does X represent?
Alcohol
Hydrogen
Heat
Mineral salts
Protein
19.
The plant structures used for gaseous exchange are the
leaves.
tendrils.
thorns.
roots.
20.
The part of the body of an animal that is usually affected by tuberculosis is the
heart.
lung.
liver.
intestine.
21.
The waste products of respiration are
glucose and oxygen.
carbon dioxide and water.
carbon dioxide and heat.
oxygen and water.
22.
It is not advisable to sleep in a closed dark room with green plants because the plants
produce heat.
compete with human beings for oxygen.
absorb water vapour.
produce carbon dioxide.
23.
Which of the following life processes is represented by the equation below?
Glucose + Oxygen → Water + Carbon dioxide + Energy
Digestion
Excretion
Photosynthesis
Respiration
24.
Which of the following life processes leads to the release of energy?
Absorption of food
Digestion of food
Photosynthesis
Respiration
25.
Exchange of gases takes place in the respiratory system through the
bronchi.
lungs.
nostrils.
trachea.
26.
Which of the following food substances is not involved in respiration?
Amino acids
Fatty acids
Glucose
Vitamins
27.
The structure in the respiratory system of humans where gaseous exchange occurs is
alveolus.
bronchus.
nostril.
trachea.
28.
The gas produced when glucose is oxidized during internal respiration is
carbon (II) oxide.
Carbon (IV) oxide.
hydrogen.
nitrogen.
29.
Which of the following life processes is represented by the equation glucose + oxygen → carbon dioxide + water + energy?
Digestion
Excretion
Photosynthesis
Respiration
30.
External respiration in living organisms is also known as
aerobic respiration.
anaerobic respiration.
gaseous respiration.
tissue respiration.
31.
The by-products of respiration are
carbon dioxide and heat
carbon dioxide and water
oxygen and heat
oxygen and water
32.
Which of the following pairs of structures are parts of the respiratory system of humans?
Fallopian tube and alveoli
Pharynx and esophagus
Trachea and alveoli
Trachea and duodenum
33.
The gas produced when glucose is oxidized during aerobic respiration is
Hydrogen
Nitrogen
Oxygen
Carbon dioxide
34.
The function of the hair in the nose of humans is to
make breathing easier.
keep nose moist.
filter dust from the air breathed in.
keep the nose warm.
35.
Which of the following statements about aerobic respiration is correct?
The by-product are carbon dioxide and water.
Little amount of energy is produced.
Oxygen is not required.
The by-products are alcohol and carbon dioxide.
36.
Movements of the ribs is brought about by the
pleural cavity.
intercostal muscle.
larynx.
trachea.
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