Respiration and Gas Exchange

Question 1

Equation for aerobic respiration

Answer 1

glucose + oxygen → carbon dioxide + water

Question 2

Equation for anaerobic respiration

Answer 2

glucose → lactic acid

Question 3

What is lactic acid broken down into?

Answer 3

carbon dioxide and water

Question 4

What are the rings around your trachea made from?

Answer 4

Cartlidge

Question 5

What does the trachea directly split into?

Answer 5

Bronchi

Question 6

Describe the process of ventilation

Answer 6

Inhaling in breathing in and exhaling is breathing out.

When inhaling, the diaphragm muscle contacts and moves downwards.

The intercostal muscles contract and move the ribs upwards and outwards.

This increases the volume of the lungs, which reduces the pressure and so air moves into the lungs to equalise it.

When exhaling, the diaphragm muscle relaxes and moves upwards.

The intercostal muscles relax and move downwards and inwards.

This reduces the volume of the lungs, which forces air outwards.

Question 7

What does aerobic exercise increase?

Answer 7

Strength of diaphragm and intercostal muscles and Vital Lung Capacity