1 Bioenergetics 4

Question 1

What type of reaction is respiration?

Answer 1

Cellular respiration is an exothermic reaction which is continuously occurring in living cells
(The energy transferred supplies all the energy needed for living processes)

Question 2

What 2 types of respiration are there?

Answer 2

Aerobically (using oxygen)
Anaerobic (without oxygen)
Respiration trades place to transfer energy

Question 3

What’s the equation for anaerobic respiration in plants & yeast?

Answer 3

Glucose ——-> ethanol + carbon dioxide

Question 4

What’s the anaerobic respiration on yeast called?

Answer 4

Fermentation

Question 5

What’s the economic value of fermentation?

Answer 5

It’s used to make bread and alcoholic drinks

• in bread-making the CO2 from fermentation makes the bread rise
• in beer & wine making fermentation produces alcohol,

Question 6

Which produces more energy aerobic respiration or anaerobic?

Answer 6

Aerobic

Because in anaerobic the oxydation of glucose is incomplete so less energy is transferred

Question 7

How does your body get rid of lactic acid after anaerobic respiration?

Answer 7

Blood flowing through the muscles transports lactic acid to the liver where it’s converted back into glucose

Question 8

What’s oxygen debt?

Answer 8

Oxygen debt is the amount of extra oxygen the body needs after exercise to react with the accumulated lactic acid and remove it from the cells