Breathing And Respiration

Question 1

The bell jar lung model demonstrates the breathing cycle in terms of volume and pressure changes but it does not show all the features and mechanisms of the human respiration system. List three things it does not show.

Answer 1

No little tubes like the bronchioles
Balloons are not folder like the alveoli
Doesn’t show gas exchange (capillaries)

Question 2

Name five process our bodies need energy for.

Answer 2

Heat
Movement
Growth
Reproduction
Active transport

Question 3

What is the formula for cell respiration?

Answer 3

Glucose + Oxygen -> Carbon Dioxide + Water + Energy

Question 4

What is the name given to respiration that is carried out in the presence of oxygen?

Answer 4

Aerobic

Question 5

Some organisms can carry out respiration without oxygen. What is this called?

Answer 5

Anaerobic

This release was only a fraction of the energy produced in aerobic respiration.

Question 6

When we exercise in short bursts, our muscles respire anaerobically, building up toxic lactic acid. After exercise we breathe heavily to take in oxygen to get rid of the lactic acid. What is this called?

Answer 6

Oxygen debt

Question 7

Describe two differences in the composition of inhaled and exhaled air.

Answer 7

Inhaled air has a higher concentration of oxygen then exhaled air.
Exhaled air has a higher concentration of CO2 than inhaled air.

Question 8

What is the function of the alveoli?

Answer 8

Gas exchange - diffusion

Question 9

What is respiratory fitness?

Answer 9

Respiratory fitness is the ability to exercise with a little change in breathing rate.

Question 10

In humans the respiratory system consists of a series of tubes that carry gases to and from the lungs. Name four of these.

Answer 10

The nasal passage
The trachea
The bronchi
The bronchioles