Lesson 3.1.1b
3.1.1b Ventilation, lung function and fish and insect exchange Quiz: OCR Biology, Unit 2
20 questions
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Lesson 3.1.1b, Ventilation, lung function and fish and insect exchange: 20 multiple choice questions for the OCR Biology (H020), Unit 2: Exchange and transport, written with Revision Ninja.
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The 20 questions
-
What term describes the volume of air inhaled or exhaled in a normal breath at rest?
- Tidal volume
- Vital capacity
- Residual volume
- Total lung capacity
-
What is the maximum volume of air that can be exhaled after a maximum inhalation?
- Tidal volume
- Vital capacity
- Residual volume
- Inspiratory reserve volume
-
Which muscle contraction flattens the floor of the thorax during resting inspiration in humans?
- Abdominal muscles
- Internal intercostals
- External intercostals
- Diaphragm
-
What causes the decrease in thoracic volume during normal, quiet exhalation at rest?
- Internal intercostal contraction
- Elastic recoil
- Active contraction
- Diaphragm flattening
-
What is the protective bony flap that covers the gills in bony fish?
- Gill arch
- Primary lamella
- Operculum
- Spiracle
-
Insect respiratory openings are called:
- Spiracles
- Opercula
- Lamellae
- Alveoli
-
Which piece of apparatus is used to record changes in lung volume over time?
- Sphygmomanometer
- Spirometer
- Respirometer
- Potometer
-
A person breathes 15 times per minute with a tidal volume of 0.5 dm3. What is the ventilation rate?
- 30 dm3 per minute
- 0.03 dm3 per minute
- 7.5 dm3 per minute
- 15.5 dm3 per minute
-
Breathing rate is 12 breaths per minute and tidal volume is 0.4 dm3. What is ventilation rate?
- 0.033 dm3 per minute
- 48 dm3 per minute
- 12.4 dm3 per minute
- 4.8 dm3 per minute
-
Which gas in the blood primarily drives an increased rate of ventilation during exercise?
- Carbon dioxide
- Carbon monoxide
- Oxygen
- Nitrogen
-
Which lung volume measurement is calculated by adding inspiratory reserve, tidal, and expiratory reserve volumes?
- Residual volume
- Vital capacity
- Functional residual capacity
- Total lung capacity
-
In bony fish gills, countercurrent flow means water moves in which direction relative to blood?
- Random direction
- Opposite direction
- Perpendicular direction
- Same direction
-
What is the main effect of abdominal pumping movements in active insects?
- Pumps haemolymph
- Opens spiracles
- Ventilates tracheae
- Absorbs tracheal fluid
-
What happens to tracheal fluid in active insect tissues to speed up oxygen diffusion?
- It is withdrawn
- It enters spiracles
- It increases
- It blocks tracheoles
-
A breathing rate of 8 breaths in 30 seconds equals how many breaths per minute?
- 4
- 240
- 16
- 8
-
What term describes the volume of fresh air reaching the alveoli per minute?
- Alveolar ventilation
- Minute ventilation
- Vital capacity
- Tidal volume
-
Why is a countercurrent system necessary in fish gills but not in insect tracheae?
- Lower oxygen availability
- Faster diffusion rate
- Absence of capillaries
- Higher oxygen availability
-
Inhaled air contains 21% oxygen and exhaled air contains 16%. How much oxygen is removed from 100 cm3 of inhaled air?
- 2.5 cm3
- 21 cm3
- 5 cm3
- 16 cm3
-
What happens to thoracic pressure when the diaphragm contracts and flattens?
- It stays constant
- It doubles
- It decreases
- It increases
-
How does lung fibrosis affect a person's vital capacity?
- No change
- Decreases
- Fluctuates
- Increases
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