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Biology GCSE > Aerobic & Anaerobic respiration > Flashcards

Aerobic & Anaerobic respiration Flashcards

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1
Q

What is respiration

A
  • The process of transferring energy from glucose to the cells
  • All cells in a living organism respire
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2
Q

Where does respiration take place

A
  • In the mitochondria
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3
Q

What type of reaction is respiration

A
  • Exothermic
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4
Q

What are the 3 main uses of respiration

A
  • Make larger molecules from smaller ones (proteins from amino acids)
  • Use to contract muscles (so that animals can move)
  • Enables mammals and birds to mantaon their body temperature
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5
Q

Descripe a lipid molecule

A
  • 1 molecule of glycerol
  • 3 molecules of fatty acids
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6
Q

What is the word equation for aerobic respiration

A
  • Glucose + Oxygen —-> Carbon Dioxide + Water
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7
Q

What is the symbol equation for aerobic respiration

A
  • C6H12O6 + 6O2 —-> 6CO2 + 6H2O
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8
Q

What is aerobic respiration

A
  • Occurs when there is a plentiful supply of oxygen
  • Involves the complete breakdown of glucose
  • Most efficient way of transferring energy
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9
Q

What is anaerobic respiration

A
  • Occurs when there is not enough oxygen to oxidise the glucose
  • Inly occurs in an emergency (doing exercise)
  • Does not release a lot of energy
  • Involces the incomplete breakdown of glucose
  • Releases lactic acid
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10
Q

What is the equation for anaerobic respiration in animals

A

Glucose —-> Lactic Acid

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11
Q

What is the equation for anaerobic respiration in plants and yeast

A

Glucose —-> Ethanol + Carbon Dioxide

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12
Q

How do organism get the required reactants for respiration

A
  • Plants - get glucose through photosynthesis
  • Plants - oxygen diffuses into the leaf via the stomata
  • Animals - oxygen is obtained through the environment
  • Animals - get glucose through food
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13
Q

What is the use of the products of fermentation

A
  • Ethanol - alcoholic drinks
  • Carbon Dioxide - used to make bread rise
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14
Q

What is metabolism

A
  • The sum of all of the chemical reactions that take place in a living organism
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15
Q

Name a molecule made from glucose in plants and one in animals

A
  • Plants - cellulose (used to strenghthen cell walls)
  • Animals - glycogen (storage molecule in animal cells)
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16
Q

What is excess proteins broken into

A
  • Urea excreted through urine

Biology GCSE (85 decks)

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