Respiration And Breathing

Question 1

Ingredients for energy

Answer 1

• We’ve learned in digestion that food is absorbed into our bloodstream and carried around to all the cells in our body!
• The process that releases energy from this is RESPIRATION.

Question 2

Respiration is the release of energy from food

Answer 2

• The equation for respiration in word is:
• Glucose + Oxygen —> Carbon dioxide + Water + Energy

Question 3

Aerobic respiration

Answer 3

Needs oxygen to release energy from food

Question 4

Anaerobic respiration

Answer 4

Does not use oxygen to release energy from food.

Question 5

How does oxygen get to our cells???

Answer 5

Oxygen is carried by the haemoglobin in red blood cells to all other cells of the body

Question 6

Examples of anaerobic respiration (Fermentation)

Answer 6

Yeast converts sugar to alcohol in “Fermentation” for drinks such as beers and wine

Question 7

Excretion is the getting rid of the waste products of reactions from the body

Answer 7

Carbon dioxide and water vapour are excreted by the breathing system. The breathing system is also called the respiratory system.

Question 8

Nose

Answer 8

We are supposed to inhale through our nose. The reasons for doing this are:

• Hairs and mucus trap dirt particles and bacteria in the nose
• Air is warmed and moistened as it passes through the nose. Warm and moist air helps oxygen to pass from lungs into the bloodstream more easily.

Question 9

Trachea

Answer 9

The trachea, or windpipe, carries air to and from the lungs.

It is made of C-shaped rings of rigid cartilage (to prevent it from collapsing).

Question 10

Bronchus and bronchioles

Answer 10

We have two bronchi. Each bronchus carries air between the trachea and a lung. The two bronchi subdivide many times to form tiny tubes called bronchioles. Bronchioles carry air to and from the air-sacs, or alveoli.