Curriculum
Course: Alhussan Biology — Stage 8
Login

Curriculum

Alhussan Biology — Stage 8

Chapter 5: Respiration and the Respiratory System

0/32

Chapter 6: Nutrition, Health and Movement

0/32

Chapter 7: The Health of the Environment

0/21

Chapter 8: Weather and Climate

0/12
Quiz

5.6 Breathing — Quiz

Submit quiz
Once you submit, you will no longer be able to change your answers. Are you sure you want to submit the quiz?
Cancel Submit
  • Questions count: 20
  • Passing grade: B+
Start Quiz
1.
What happens when you breathe IN?
Diaphragm and intercostal muscles contract, chest volume increases, pressure falls
Chest volume decreases
Diaphragm relaxes and moves up
Pressure in the lungs rises
2.
Which is a limitation of the bell jar model?
It has no ribs or alveoli
It shows air entering
Balloons inflate
It has a diaphragm
3.
Why must air in the alveoli be changed constantly?
To keep the lungs cold
To keep the concentration gradients steep
To stop the heart
To make lactic acid
4.
True or false? The lungs have muscles of their own that move them.
True
False
5.
True or false? At rest, breathing out is mostly passive as the elastic lungs recoil.
True
False
6.
True or false? When chest volume increases, the pressure falls.
True
False
7.
In the bell jar model, the rubber sheet represents the ____.
lungs
ribs
trachea
diaphragm
8.
Inhaled air is about ____% oxygen.
4
79
16
21
9.
Exhaled air is about ____% oxygen.
21
50
16
1
10.
Which term matches this definition? “The volume of air in a normal breath, about 500 cm³.”
Vital capacity
Tidal volume
Oxygen debt
Lung volume
11.
Which term matches this definition? “Dome-shaped muscle below the lungs.”
Exothermic
Diaphragm
Bronchioles
Vital capacity
12.
Which is the correct definition of “Diaphragm”?
Dome-shaped muscle below the lungs.
A chemical that absorbs carbon dioxide.
The windpipe held open by rings of cartilage.
A membrane that lets small molecules through but not large ones.
13.
Composition of inhaled and exhaled air: oxygen. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 1
A
B
C
D
14.
Volume of air in the lungs during breathing. Which graph shows these results correctly?
Dr Dabour Hub Academy - figure 2
A
B
C
D
15.
The bar chart compares inhaled and exhaled air. Which conclusion is correct?
Dr Dabour Hub Academy - figure 3
The body uses nitrogen
Carbon dioxide is the same in both
Exhaled air has more oxygen
Exhaled air has less oxygen and more carbon dioxide; nitrogen is unchanged
16.
Composition of inhaled and exhaled air: oxygen. What is the value for Exhaled?
Dr Dabour Hub Academy - figure 4
16
26
21
11
17.
Composition of inhaled and exhaled air: oxygen. About how many times bigger is Inhaled than Exhaled?
Dr Dabour Hub Academy - figure 5
2.0
0.7
1.3
2.6
18.
Carbon dioxide rises from 0.04% in inhaled air to 4% in exhaled air. How many times greater is it?
1000 times
100 times
4 times
10 times
19.
A person breathes 12 times per minute with a tidal volume of 500 cm³. What volume of air is breathed per minute?
600 cm³
42 cm³
6000 cm³
512 cm³
20.
A person breathes 16 times a minute with a tidal volume of 500 cm³. What volume per minute?
31 cm³
8000 cm³
516 cm³
800 cm³
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
Part of Chapter 5: Respiration and the Respiratory System — see every lesson and quiz in this unit.
Accepted payment methods