Respiration

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Cards (14)

How is energy supplied ?
by cellular respiration ?
What is cellular respiration?
an exothermic reaction which takes place in all continually living cells
What is aerobic respiration ?
A chemical process in which oxygen is used to make energy from sugars
What is the word equation for aerobic respiration ?
glucose +oxygen --|--->carbon dioxide +water
>energy
How does aerobic respiration occur ?
glucose is reacted with oxygen which produces carbon dioxide and water and releases energy
Key facts about aerobic respiration
releases a lot of energy because the glucose molecule has been fully oxidised
What is anaerobic respiration ?
respiration without oxygen
What is the word equation for anaerobic respiration in animals ?
glucose --|--> lactic acid
>energy
How does anaerobic respiration occur ?
in muscles the glucose is converted to lactic acid
Why does anaerobic respiration occur in muscles ?
in some conditions oxygen is limited for the contraction of mucles
Why is less energy released in anaerobic respiration than aerobic respiration?
in anaerobic respiration the oxidation of glucose is incomplete
How does anaerobic respiration occur in plants/yeast cells ?
glucose is converted to ethanol and carbon dioxide
What is the word equation for anaerobic respiration for plants/yeast?
glucose --|-->ethanol + carbon dioxide
> energy
What is anaerobic respiration used for in yeast ?
Fermentation e.g. for alcoholic drinks like beer and for bread bubbles cause the bread to rise (produced by the carbon dioxide from the fermentation )