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Biology GCSE 2020 > Foundation: B4 - Bioenergetics > Flashcards

Foundation: B4 - Bioenergetics Flashcards

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1
Q

What is the word equation for photosynthesis?

A

Carbon dioxide + water –> glucose + oxygen

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2
Q

What is the word equation for aerobic respiration?

A

Oxygen + glucose –> carbon dioxide + water

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3
Q

Is photosynthesis an endothermic or exothermic reaction?

A

Endothermic

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4
Q

Is respiration an endothermic or exothermic reaction?

A

Exothermic

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5
Q

What factors affect the rate of photosynthesis?

A

Temperature, light intensity and carbon dioxide concentration

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6
Q

How can the rate of photosynthesis be measured?

A

Count the bubbles of oxygen given off by pondweed in a given amount of time

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7
Q

What is glucose used for in plants?

A

Respiration
Converted to insoluble starch for storage
Used to produce fat or oil for storage
Used to produce cellulose, used in cell walls
Used to produce amino acids for protein synthesis

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8
Q

What is the word equation for anaerobic respiration in animals?

A

glucose –> lactic acid

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9
Q

What is the word equation for anaerobic respiration in plants and yeast cells?

A

glucose –> ethanol + carbon dioxide

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10
Q

What type of respiration releases the most energy?

A

Aerobic respiration

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11
Q

What is another name for anaerobic respiration in yeast?

A

Fermentation

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12
Q

What is anaerobic respiration in yeast used for?

A

Producing bread and alcohol

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13
Q

What changes happen to the body during exercise?

A

Increased heart rate, increased breathing rate, increased breath volume

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14
Q

Why does heart rate increase during exercise?

A

To supply the muslces with more oxygen and glucose for respiration, and to remove carbon dioxide produced in respiration

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15
Q

What is oxygen debt?

A

The amount of oxygen needed to remove lactic acid from anaerobic respiration

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16
Q

What is metabolism?

A

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

17
Q

What reactions does metabolism include?

A

Conversion of glucose into starch, glycogen and cellulose
Formation of lipids from glycerol and fatty acids
Production of amino acids from nitrate ions and glucose
Respiration
Breakdown of excess proteins to form urea

Biology GCSE 2020 (13 decks)

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