Topic 4 Bioenergetics - Definitions

Question 1

Aerobic respiration

Answer 1

​A form of respiration that uses oxygen to release energy from molecules like glucose - represented by the following word equation
Glucose + Oxygen —> Carbon dioxide and Water

Question 2

Anaerobic respiration

Answer 2

​A form of respiration that releases energy from molecules like glucose without using oxygen - represented by the following word equation
Glucose —> Lactic Acid

Question 3

Cellular respiration

Answer 3

​An exothermic reaction which is continuously occurring in living cells.

Question 4

Inverse proportion

Answer 4

​A relationship between two values where as one value increases, the other value decreases at the same rate.

Question 5

Inverse square law

Answer 5

​As the distance from a light source increases, the light intensity is inversely proportional to the distance squared - given by the following equation
Light Intensity proportional to
1 / (Distance from light source) ^ 2

Question 6

Limiting factor

Answer 6

​A factor that limits the rate of a reaction when there is not enough of it.

Question 7

Metabolism

Answer 7

​The sum of all the reactions in a cell or the body.

Question 8

Oxygen debt

Answer 8

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

Question 9

Photosynthesis

Answer 9

​An endothermic reaction in which energy is transferred from the environment to the chloroplasts by light.