B9 respiration Flashcards

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1
Q

aerobic respiration equation

A

glucose + oxygen -> CO2 + water

C6 H12 O6 + 6 O2 -> 6 CO2 + 6 H2 O

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2
Q

need for respiration

A

synthesis reactions
muscle contractions in animals
maintain body temp
used in active transport (root hair cells)

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3
Q

responses to exercise

A

increased heart rate, breathing rate and volume
glycogen stores converted to glucose for cellular respiration
flow of oxygenated blood to muscles increases
increased rate of removal of waste products from muscles ( CO2)

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4
Q

anaerobic respiration in animals

A

glucose -> lactic acid

not as efficient as aerobic -> glucose not broken down completely

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5
Q

cause of muscle fatigue

A

build up of lactic acid in muscle cells

creates oxygen debt

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6
Q

what is oxygen debt

A

amount of oxygen needed to convert lactic acid back into glucose (in the liver)

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7
Q

anaerobic respiration in plants

A

glucose -> ethanol + carbon dioxide

energy transferred to environment

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8
Q

metabolism

A

sum of all the reactions in the body

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9
Q

metabolic reactions

A
glucose -> starch,cellulose + glycogen
formation of lipid molecules
respiration reaction
photosynthesis reaction
glucose + nitrate ions -> amino acids -> proteins
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10
Q

role of liver

A

detoxifying poisonous substances
passing breakdown products into blood
breaking down old, worn out blood cells and storing iron until needed to make new blood cells
removing lactic acid

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11
Q

use of amino acids

A

synthesise proteins

breakdown excess proteins to form urea

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