The Respiratory System

The release of energy from food is known as
1. respiration
2. digestion
3. photosynthesis
4. conservation
Which one of the following gases is required for respiration?
1. Oxygen
2. Nitrogen
3. Carbon dioxide
4. Methane
Which one of the following equations best describes aerobic respiration?
1. glucose + oxygen ➜ carbon dioxide + water vapour + energy
2. glucose + carbon dioxide ➜ oxygen + water vapour + energy
3. carbon dioxide + oxygen ➜ water vapour + glucose + energy
4. energy + oxygen ➜ carbon dioxide + water vapour + glucose
The test for carbon dioxide gas is that
1. it turns limewater milky
2. it extinguishes a lighting match
3. it turns cobalt chloride paper red/pink
4. it relights a glowing splint
Which one of the following statements is NOT correct for anaerobic respiration?
1. Anaerobic respiration always involves the presence of oxygen
2. Anaerobic respiration occurs when yeast converts sugar to alcohol during fermentation
3. Anaerobic respiration occurs when milk is caused to go sour by the action of bacteria
4. Anaerobic respiration does not use oxygen to release energy from food
Which product of respiration causes cobalt chloride paper to change colour from blue to pink?
1. water vapour
2. carbon dioxide
3. oxygen
4. nitrogen
Another name for the breathing system is the
1. respiratory system
2. circulatory system
3. digestive system
4. nervous system
Name the parts labelled in the diagram
1. A = trachea, B = bronchiole
2. A = alveolus, B = bronchiole
3. A = trachea, B = bronchus
4. A = bronchiole, B = trachea
Which one of the following is NOT a function of the nose?
1. To exchange gases
2. To traps dust particles
3. To warms air entering the nose
4. To traps bacteria
Where in the respiratory system would you find rings of cartilage?
1. trachea
2. nose
3. alveoli
4. diaphragm
The name of the tiny air sacs in the lungs where gas exchange takes place is
1. alveoli
2. bronchi
3. bronchioles
4. intercostal muscles
The average percentage of oxygen in inhaled air is 21%. Which one of the following is the most likely percentage of oxygen in exhaled air?
1. 16%
2. 21%
3. 0%
4. 25%
The muscle labelled X in the diagram is known as the
1. diaphragm
2. intercostal muscle
3. biceps
4. triceps
Which one of the following labelled parts in the diagram is known as the intercostal muscle?
1. C
2. B
3. A
4. D
Which one of the following effects is NOT associated with smoking?
1. Decreased risk of acquiring pneumonia and bronchitis.
2. Increased risk of lung cancer.
3. Decreased ability of the blood to transport oxygen.
4. Increased risk of developing 'smokers cough'.
Gas exchange in the lungs of humans takes place between the walls of the
1. alveoli
2. bronchi
3. trachea
4. bronchioles
When humans exhale, air goes from the bronchus into the
1. trachea
2. bronchioles
3. alveoli
4. nostrils
The part of the respiratory system labelled Y in the diagram is the
1. bronchus
2. bronchiole
3. alveolus
4. wind-pipe
Air that was breathed out by a human was analysed for the gases present. Which of the following is most likely to be the result of the analysis?
1. 78% nitrogen, 16% oxygen, 4% carbon dioxide and 2% water vapour
2. 78% nitrogen, 21% oxygen, 0.5% carbon dioxide and 0.5% water vapour
3. 80% nitrogen, 60% oxygen, 4% carbon dioxide and 6% water vapour
4. 70% nitrogen, 20% oxygen, 0.5% carbon dioxide and 9.5% water vapour
What type of blood vessel surrounds the alveoli?
1. capillaries
2. veins
3. arteries
4. nerve endings
Air travels to the lungs through
1. the mouth and nose
2. the oesophagus and the arteries
3. the wind-pipe and skin
4. the nose and veins
The function of hair in the nose is
1. to help fight infection
2. to cause us to sneeze
3. to keep water out of the lungs
4. to help gas exchange in the lungs
Another name for the wind-pipe is the
1. trachea
2. larynx
3. oesophagus
4. lung
Which one of the following takes place in the lungs?
1. Gas exchange
2. Waste material is filtered from the blood
3. Food is digested
4. Food is stored
Air contains nitrogen. What happens to the nitrogen in inhaled air?
1. Its exhaled again without anything happening to it.
2. Its changed into nitrogen oxide.
3. It circulates through our bloodstream.
4. Its absorbed into the digestive system and aids digestion.
Which one of the following protects the lungs?
1. rib cage
2. diaphragm
3. alveoli
4. trachea
The bronchi are connected to the alveoli via
1. bronchioles
2. the trachea
3. air sacs
4. capillaries
Which of the following is the correct order for air passing through the lungs?
1. trachea ➞ bronchus ➞ bronchiole ➞ alveoli
2. bronchus ➞ trachea ➞ bronchioles ➞ alveoli
3. trachea ➞ alveoli ➞ bronchi ➞ bronchioles
4. bronchus ➞ alveoli ➞ trachea ➞ bronchioles
Which one of the following factors would you expect to control the breathing rate in a human?
1. The amount of red blood cells in the blood
2. The amount of carbon dioxide in the blood
3. The amount of white blood cells in the blood
4. The amount of food being carried in the blood
Which one of the following pairs of items are both necessary for respiration to take place?
1. glucose and oxygen
2. glucose and carbon dioxide
3. sunlight and carbon dioxide
4. glucose and sunlight
Inhaled air contains
1. less carbon dioxide than exhaled air
2. less oxygen than exhaled air
3. more nitrogen than exhaled air
4. less nitrogen than exhaled air
When the air passages leading to the lungs contract and become narrower in size, this condition is known as
1. asthma
2. the flu
3. lung cancer
4. bronchitis
What happens to your lungs when you breath in?
1. They expand
2. They push up the diaphragm
3. They absorb carbon dioxide
4. They manufacture glucose
Which one of the following is NOT a disease of the respiratory system?
1. chicken pox
2. pneumonia
3. cancer
4. asthma
This stops food from going down into the lungs
1. epiglottis
2. trachea
3. bronchiole
4. nose
When we breath in
1. the intercostal muscles move up and the diaphragm moves down
2. the intercostal muscles move down and the diaphragm moves up
3. the intercostal muscles move up and the diaphragm moves up
4. the intercostal muscles move down and the diaphragm moves down
At rest, the average breathing rate of an adult is
1. 12 to 15 breaths per minute
2. 3 to 5 breaths per minute
3. 60 to 65 breaths per minute
4. 100 + breaths per minute
Which one of the following is NOT part of the breathing system?
1. Pancreas
2. Trachea
3. Nose
4. Bronchus
When would a human body be most likely to respire anaerobically?
1. When running a marathon
2. When watching TV
3. When asleep
4. When eating
Name the parts labelled in the diagram
1. C = larynx, D = bronchus
2. C = alveolus, D = larynx
3. C = trachea, D = alveolus
4. C = larynx, D = trachea
The muscle labelled Z in the diagram is known as the
1. intercostal muscle
2. diaphragm
3. biceps
4. triceps
Which one of the following organisms breaths through their skin?
When we breath in, something happens to the composition of air in our lungs. Which one of the following statements about breathing air is incorrect?
1. We breath in more nitrogen than we breath out.
2. We breath out more water vapour than we breath in.
3. We breath out less oxygen than we breath in.
4. We breath out more carbon dioxide than we breath in.
What is the function of the trachea?
1. It passes air to the lungs.
2. It allows us to make sounds.
3. To keep the airways open.
4. It exchanges gases.
Tiny tubes taking air to the alveoli are called
1. bronchioles
2. bronchi
3. lungs
4. capillaries
What is the name of the sheet of muscle that moves down to draw air into the lungs, and up to expel air out of the lungs
1. Diaphragm
2. Alveolus
3. Bronchus
4. Laryn
Where are sounds made?
1. Voice box
2. Trachea
3. Windpipe
4. Bronchus
Alveoli have only very thin walls separating them from each other. This allows the gases to move into and out of the blood by
1. diffusion
2. respiration
3. circulation
4. circulation
Exercise causes our breathing rate to increase.
1. TRUE
2. FALSE
Which one of the following statements about smoking is incorrect?
1. Most smokers live 5-10 years longer than non-smokers.
2. 9 out of 10 people with lung cancer are smokers.
3. Smokers are three times more likely to get heart disease than non-smokers.
4. Smoking less than 5 cigarettes a day has no effect on our health.

The Respiratory System

Multiple Choice Quiz