Biology - paper 1 (Bioenergetics)

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  • Created by: rosieraby
  • Created on: 12-05-18 16:11
What is the balanced symbol equation fro photosynthesis?
6CO2+6H2O-->C6H12O6+6O2
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Is photosynthesis an exothermic or endothermic reaction?
Endothermic
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What can affect the rate of photosynthesis?
Temperature, light intensity, carbon dioxide concentration and amount of chlorophyll
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In what type of building are limiting factors economically important?
Greenhouses
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Name three ways in which plants use glucose from photosynthesis
Respiration, storage as starch, produce fat/oil for storage, produce cellulose for the cell wall, produce amino acids for protein synthesis
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Along with glucose, what do plants need to make proteins?
Nitrate ions absorbed from soil
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Is respiration an endothermic or exothermic reaction?
Exothermic
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What does aerobic respiration use?
Oxygen
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What does anaerobic respiration not use?
Oxygen
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What is produced in anaerobic respiration (in animals)?
Lactic acid
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What is produced in aerobic respiration?
Carbon dioxide and water
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What do organisms need energy for?
Chemical reactions to build larger molecules, movement, keeping warm
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What is the balanced symbol equation for aerobic respiration?
C6H12O6+6O2-->6CO2+6H2O
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Which type of respiration releases the least amount of energy?
Anaerobic
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What is the word equation for anaerobic respiration in animals?
Glucose --> lactic acid (+ little energy)
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What is the word equation fro anaerobic respiration in plants and yeast?
Glucose --> carbon dioxide + ethanol
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What is anaerobic respiration in yeast cells called?
Fermentation
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Give two uses of anaerobic respiration.
Manufacture of bread and alcohol drinks
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What three changes occur to the heart and lungs when exercising?
Heart rate increases, breath rate increases and breath volume increases
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What does incomplete oxidation of glucose lead to?
Build up of lactic acid and oxygen debt
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Where is lactic acid converted back into glucose?
Liver
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What is oxygen debt?
The amount of extra oxygen the body needs after exercise to react with the accumulated lactic acid and remove it from the cells
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What is the sum of all reactions in a cell or the body called?
Metabolism
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Other cards in this set

Card 2

Front

Is photosynthesis an exothermic or endothermic reaction?

Back

Endothermic

Card 3

Front

What can affect the rate of photosynthesis?

Back

Preview of the front of card 3

Card 4

Front

In what type of building are limiting factors economically important?

Back

Preview of the front of card 4

Card 5

Front

Name three ways in which plants use glucose from photosynthesis

Back

Preview of the front of card 5
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