Respiration Flashcards

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1
Q

What is breathing?

A

The movement of air coming in and out of the lungs

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2
Q

What is respiration?

A

The chemical reaction that releases energy

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3
Q

What does anaerobic mean?

A

Without oxygen

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4
Q

Where does the reaction take place during respiration?

A

Mitochondria in the cells in our body

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5
Q

What are the waste products produced during respiration?

A

Carbon dioxide

Water

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6
Q

When does aerobic respiration happen?

A

All the time

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7
Q

What substrates are used for respiration?

A

Glucose

Sometimes fats and amino acids

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8
Q

What is a substrate?

A

The place on which and enzyme acts

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9
Q

What do we use energy from aerobic respiration for?

A

Movement

Maintaining body temperature

Building large molecules from smaller molecules

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10
Q

Is respiration endothermic or exothermic?

A

Exothermic

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11
Q

How do mitochondria provide an increased surface area for the enzymes involved in respiration?

A

They have a FOLDED MEMBRANE

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12
Q

Why is the word equation for aerobic respiration?

A

Glucose + oxygen ———> water + carbon dioxide ( + energy)

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13
Q

What is the symbol equation for aerobic respiration?

A

C6H12O6 + 6O2 ———> 6H2O + 6CO2

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14
Q

Why is aerobic respiration slower than anaerobic respiration?

A

It has more steps

Requires more enzymes

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15
Q

How can we test if carbon dioxide is produced during respiration?

A

Blow through straw into limewater

If present limewater goes cloudy

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16
Q

How can we test is water is produced during respiration?

A

1) blow on mirror so it gets condensation on it

2) breath on cobalt chloride paper so it goes from BLUE TO PINK

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17
Q

How can we test if heat is produced during respiration?

A

Put one dead and one alive bean in separate cans

Love one will respire

Can will heat up for live bean but not dead bean

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18
Q

When does anaerobic respiration take place in animals?

A

When their is not enough oxygen or none at all so oxidation of glucose is incomplete

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19
Q

What substrates are used in anaerobic respiration?

A

Only glucose

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20
Q

Where doe anaerobic respiration take place?

A

In cytoplasm

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21
Q

What is the word equation for anaerobic respiration?

A

Glucose ——> lactic acid (+energy)

22
Q

Why is anaerobic respiration faster than aerobic respiration?

A

Requires less enzymes so has less steps

23
Q

How much energy does anaerobic respiration release compared to aerobic respiration?

A

Less as it is INCOMPLETE OXIDATION

24
Q

What can build up of lactic acid cause?

A

Muscle fatigue

Cramps

25
Q

What does oxygen debt mean?

A

The amount of oxygen needed to break down the lactic acid

26
Q

How does the body deal with excess lactic acid produced from anaerobic respiration?

A

Blood takes it back to liver from muscles to convert it back to glucose

27
Q

Why does breathing remain high after exercise?

A

To supply extra oxygen

28
Q

Lactic acid + oxygen —>

A

Carbon dioxide + water

29
Q

When does anaerobic respiration take place in plants and yeast?

A

I’m when they are in water logged soil so can’t get enough oxygen

30
Q

What can anaerobic respiration be used for in plants and yeast?

A

Making bread

Brewing alcohol

Also called FERMENTATION

31
Q

Why is anaerobic respiration not sustainable on plants and yeast?

A

Ethanol levels build up and eventually kill the cell

32
Q

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

A

Glucose ——> ethanol + carbon dioxide (+energy)

33
Q

Why do muscles become fatigued during exercise?

A

Lactic acid produce during anaerobic respiration can stop muscles contracting efficiently

34
Q

What are muscles made from?

A

Protein fibres

35
Q

What is glycogen?

A

The carbohydrate store in animals

36
Q

How is glycogen used by muscles during exercise?

A

Converted to glucose to supply cells with fuel for increased cellular respiration to release more energy

37
Q

How to muscle contractions change during exercise?

A

Contract harder and faster

38
Q

How do glycogen Stores change during exercise?

A

They decrease

39
Q

How does heat rate change during exercise?

A

Increases

40
Q

How do the arteries supplying muscles with blood change during exercise?

A

Dilated or widen

41
Q

How does breathing rate change during exercise?

A

Increases

42
Q

How does depth of breathing change during exercise?

A

Breathe more deeply

43
Q

How does the volume of the heart change as a result of long term exercise?

A

Higher

44
Q

How does the volume of blood pumped by each heart beat change as a result of long term exercise?

A

More is pumped around

45
Q

How does the resting heart rate change as a result of long term exercise?

A

Lower

46
Q

How does the maximum lung volume change as a result of long term exercise?

A

Increases

47
Q

How does the testing breathing rate change as a result of long term exercise?

A

Lower

48
Q

What is metabolism?

A

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

49
Q

What do metabolic reactions do?

A

Build up or break down molecules

Bring about a change and movement when needed

50
Q

What is the liver?

A

A very active organ with many metabolic functions

51
Q

What are the functions of the liver (5)?

A

Making bile

Converting lactic acid to glucose

Storing iron from old cells to make more blood cells

Detoxifying poisonous substances

Passing breakdown products to blood to be excreted