Topic 4 - Bioenergetics ( 7. aerobic respiration )

Question 1

Define respiration

Answer 1

the process of transferring energy from food molecules in every living cell

Question 2

Describe the process of aerobic respiration

Answer 2

• Glucose reacts with oxygen, producing carbon dioxide and water as waste products
• This takes place continuously in animals and plants

Question 3

What is the word equation for aerobic respiration?

Answer 3

glucose + oxygen => carbon dioxide + water + energy

Question 4

Respiration involves a series of what?

Answer 4

small reactions, each controlled by an enzyme

Question 5

Where do most of the reactions in respiration happen?

Answer 5

mitochondria

Question 6

What is the energy that is released during respiration used for?

Answer 6

• To build up larger molecules using smaller ones
• In animals, to enable muscles to contract
• In mammals and birds, to maintain a steady body temperature in colder surroundings
• In plants, to build up sugars, nitrates and other nutrients into amino acids which are then built up into proteins