Bioenergetics

A plant deficient in nitrates will

• Have black spots

• Be yellow in colour

• Be have small growths on their stems

• Attract pests

Aerobic respiration

• required oxygen, is endothermic and releases large amounts of energy in cells

• required oxygen, is exothermic and releases large amounts of energy in cells

• required oxygen, is endothermic and releases small amounts of energy in cells

• required oxygen, is exdothermic and releases large amounts of energy in cells

Cells respire

• during exercise

• all the time

• when we are cold

• when we have just eaten

In anaerobic respiration

• glucose is not completely broken down

• glucose is oxidised completely

• a small amount of oxygen is required

• glucose is completely broken down but no oxygen is required

What are the two products of fermentation?

Glycogen (multiple answers)

• is stored as a carbohydrate in the muscles

• is converted to glucose slowly

• is stored as a carbohydrate in the liver

• can be converted to glucose quickly

Where is lactic acid taken to be removed after anaerobic respiration?

• The muscles

• The bladder

• The liver

• The lungs

What does metabolism mean?

The oxygen debt

• is the amount of oxygen required to remove excess carbon dioxide

• is repaid rapidly

• is the amount of oxygen required to remove lactic acid

• is needed to oxidise carbon dioxide

Photosynthesis

• produces energy

• requires oxygen

• produces chlorophyll

• produces food