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science gcse > B9 > Flashcards

B9 Flashcards

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1
Q

what type of reaction is aerobic respiration

A

exothermic

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2
Q

what is an exothermic reaction

A

a reaction that transfers energy to the environment

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3
Q

what is the word equation for aerobic respiration

A

glucose + oxygen –> Carbon dioxide + water + energy

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4
Q

what is the symbol equation for aerobic respiration

A

C6H12O6 + 6O2 –> 6CO2 + 6H2O + ATP

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5
Q

where does aerobic respiration take place

A

mitochondria

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6
Q

where are enzymes made

A

cytoplasm

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7
Q

Why do mitochondria have a folded inner membrane

A

to provide a large surface area for the enzymes

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8
Q

what is energy produced in respiration used for

A

to carry out the basic functions of life including muscles contracting and maintaining constant body temperature

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9
Q

does aerobic respiration occur in plants and animals

A

yes

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10
Q

what is glucose stored as

A

glycogen

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11
Q

what changes in your body when you exersice

A

heart rate increases and arteries dilate increasing flow of oxygenated blood to muscles; breathing rate increases allowing more oxygen to enter your body; glycogen converted back to glucose to provide cells with fuel needed for cellular respiration.

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12
Q

why is anaerobic respiration not as effective as aerobic respiration

A

the breakdown of glucose is incomplete

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13
Q

what is the word equation for anaerobic respiration

A

glucose –> lactic acid

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14
Q

what does the build up of lactic acid cause

A

an oxygen debt

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15
Q

what can cause your muscles to stop contracting correctly

A

muscle fatigue

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16
Q

what is the oxygen debt

A

the amount of oxygen needed to convert lactic acid back to glucose.

17
Q

what can impact the amount of time you are out of breath for

A

the amount of lactic acid that needs to be converted back into glucose

18
Q

what is the equation for oxygen debt repayment

A

lactic acid + oxygen –> Carbon Dioxide + water

19
Q

what is anaerobic respiration in yeast cells called

A

fermentation

20
Q

what is the word equation for anaerobic respiration in plants

A

glucose –> ethanol + Carbon Dioxide

21
Q

where does anaerobic respiration take place

A

plants and animals

22
Q

what is the metabolism of an organism

A

the sum of all the reactions that take place in a cell or body

23
Q

what are some common metabolic reactions

A

conversion of glucose to starch and glycogen
respiration
photosynthesis
formation of lipids

24
Q

what are the liver’s functions

A

detoxifying poisonous substances
passing breakdown products through blood to be excreted in urine via kidneys
breaking down old blood cells

25
Q

where is lactic acid converted back into glucose

A

the liver

science gcse (44 decks)

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