Topic 12

Question 1

Anaerobic respiration meaning

Answer 1

Release of a little energy from each molecule of glucose in the absence of oxygen

Question 2

Anaerobic respiration equation

Answer 2

Glucose -> lactic acid + energy releazed

Question 3

Importance of las tic acid

Answer 3

Lactic acid can slowly poison muscles can cause cramps so it must be removed from the body. The build up of lactic acid in the muscles and blood

Question 4

Aerobic respiration equation

Answer 4

Glucose + oxygen -> carbon dioxide + water + energy released

Question 5

How is energy used in humans

Answer 5

Muscle contraction
Cell division
Absorption of nutrients by active transport
Sending impulses along nerves
Protein synthesis for making enzymes
Making new cell membranes and cell structures
Keeping the body temperature constant

Question 6

What is aerobic respiration

Answer 6

Oxygen is used in the breakdown of glucose

Question 7

Respiration meaning

Answer 7

Involves a number of chemical reactions that break down nutrient molecules such as glucose in living cells to release energy

Question 8

What causes oxygen debt

Answer 8

The build up of lactic acid in muscles.