Respiration

Question 1

What is respiration?

Answer 1

Glucose +oxygen –> carbon dioxide + water (+energy)

• Exothermic reaction (gives out heat)

Question 2

Where does respiration take place?

Answer 2

-takes place in mitochondria but other parts of cells play a virtual role (cell membrane,nucleus etc)

Question 3

Why is respiration important?

Answer 3

• it maintains body temperature
• builds up/breaks down molecules
• plant minerals
• muscle contractions

Question 4

what is anaerobic respiration?

Answer 4

Anaerobic respiration is a chemical reaction that releases energy from glucose without using oxygen.

Question 5

when does anaerobic respiration happen?

Answer 5

It happens when oxygen cannot be delivered to the muscle fast enough (eg hard exercise)

Question 6

what is the equation for anaerobic respiration?

Answer 6

Glucose > lactic acid

Question 7

how is anaerobic respiration in yeast different to animals?

Answer 7

Almost all animals and humans are obligate aerobes that require oxygen for respiration, whereas anaerobic yeast is an example of facilitative anaerobe bacteria.