Aerobic/anaerobic Respiration

Question 1

3 things humans need energy for

Answer 1

1.keep warm
2.movement
3.chemical reactions to build larger molecules

Question 2

What is respiration

Answer 2

Exothermic reaction (release energy) where all living cells release energy from glucose

Question 4

What is aerobic respiration

Answer 4

Process where glucose reacts with oxygen. This produces carbon dioxide and water and releases energy

Question 5

Why does aerobic respiration release a great deal of energy

Answer 5

Because the glucose is fully oxidised this means that oxygen and glucose is completely broken down into co2 and water allowing maximum amount of energy to be released

Question 6

Aerobic respiration balanced chemical equation

Answer 6

C6H12O6 + 6O2 —> 6Co2 + 6H2O

Question 7

When/where is anaerobic respiration needed

Answer 7

Under certain conditions (muscle cells need a lot of energy for contraction) where the amount of oxygen is limited (muscle cells) respire anaerobically

Question 8

What is Anaerobic respiration is muscles and relatively how much energy released

Answer 8

Glucose is converted into lactic acid (anaerobic doesn’t require oxygen)
Releases much less energy than aerobic respiration because the oxidation is incomplete with oxygen

Question 9

What is anaerobic respiration in plant cells and yeast

Answer 9

The glucose is converted to ethanol and carbon dioxide (no oxygen)
Anaerobic respiration in yeast is called fermentation (beer), in bread the CO2 is useful (dough rises)