Topic 4 Respiration Flashcards

0
Q

What is anaerobic respiration

A

The release of a little bit of energy without oxygen

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1
Q

What is the equation for respiration

A

Glucose + oxygen —-> water + carbon dioxide+ energy

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2
Q

What chemical builds up in muscle and causes pain during exercise

A

Lactic acid

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3
Q

Why is lactic acid formed

A

Incomplete breakdown of glucose

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4
Q

Name the chemical reaction which releases energy

A

Respiration

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5
Q

Name an energy that is lost during respiration

A

Heat energy

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6
Q

Why is respiration important to all cells

A

They need energy to grow

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7
Q

Why is cotton wool used in an experiment of living seeds

A

Allows gas to diffuse in and out

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8
Q

Why is it important that a thermos flask is used in an experience testing living seeds

A

To keep the heat in

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9
Q

What is lactic acid

A

A poison which builds up during anaerobic respiration causing a stich

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10
Q

Define inspiration

A

The taking in of air

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11
Q

Define expiration

A

The breathing out of air

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12
Q

Where does gas exchange take place

A

Alveoli

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13
Q

Why are alveoli good at exchanging gases

A

They have a large surface area, they have a good blood supply, they are moist, they have a thin membrane (short diffusion pathway)

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14
Q

What happens during inspiration

A
The diaphragm moves down
The ribcage moves up
The volume in lung creases 
Causing the pressure in the lungs to decrease 
Air rushes in
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15
Q

What happens during expiration

A
The diaphragm moves up 
The ribcage moves down 
The volume in the lungs decrease 
Causing the pressure in the lungs to increase
Air rushes our
16
Q

What happens if you add disinfectant to live peas

A

It will kill the microbes, no respiration will occur and no temperature increase

17
Q

What is the thermos flask used for

A

Used at the control, the outside air temperature will not affect the result

18
Q

Name a chemical produced during respiration

A

Carbon dioxide

19
Q

What chemical builds up during exercise causing muscle pain

A

Lactic acid

20
Q

Explain how a good blood supply helps to prevent an oxygen debt

A

The blood carries the oxygen, meaning there is more oxygen available for the cells

21
Q

What process releases heat energy

A

Respiration

22
Q

What gas is produced in respiration

A

Carbon dioxide

23
Q

What do living organisms use respiration for?

A

Growth
Repair
Movement

24
Q

What control chemical reactions in respiration

A

Enzymes

25
Q

What diffuses into a muscle cell during respiration

A

Oxygen and glucose

26
Q

Name the process where oxygen and glue use move into the muscle cell

A

Diffusion

27
Q

Why is respiration important to all cells

A

Needs the energy to grow

28
Q

Name an advantage of anaerobic respiration

A

Muscles can relate energy for a short period of time when not enough oxygen is available

29
Q

Name a disadvantage of anaerobic respiration

A

Lactic acid is released into the muscle causing cramp

30
Q

What are the waste products of respiration

A

Water and carbon dioxide