Unit 1.5: Respiration Flashcards

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1
Q

Name the form of energy stored in glucose.

A

Chemical energy

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2
Q

What is the name of the process used to release the chemical energy in glucose?

A

Respiration

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3
Q

Name the molecule the energy released from the breakdown of glucose is used to generate.

A

ATP

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4
Q

Name the protein which controls the series which releases energy from glucose.

A

enzymes

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5
Q

Describe the function of ATP.

A

To transfer energy to cellular activities that require energy.

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6
Q

State 5 cellular activities that require energy from ATP.

A
Active transport
Cell division
Muscle contraction
Protein synthesis
Nerve impulse transmission
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7
Q

Where does respiration happen in the first stage?

A

In the cytoplasm

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8
Q

How many molecules of pyruvate are made when 1 molecule is broken down?

A

2

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9
Q

State how many molecules of ATP is released when 1 molecule of glucose is broken down to pyruvate.

A

2

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10
Q

Under what conditions will aerobic respiration occur?

A

If oxygen is present

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11
Q

What is the word equation for aerobic respiration?

A

Glucose + Oxygen -> Water + Carbon Dioxide + lots of ATP

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12
Q

Where does stage 2 take place?

A

In the mitochondria

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13
Q

Describe the relationship between the energy required of a cell and the number of the mitochondria present.

A

As the number of mitochondria increases, the energy required of a cell also increases.

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14
Q

Name cells that require a lot of energy.

A

Muscle cells
Neuron cells
Sperm cells
Companion cells

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15
Q

Name the apparatus used to measure rate of respiration in small organisms and germinating peas.

A

Respirometer

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16
Q

What gas is taken up by respiring organisms during aerobic respiration?

A

Oxygen

17
Q

Which gas is produced during aerobic respiration?

A

Carbon dioxide

18
Q

How is the organism separated from the chemical?

A

Its placed on a platform

19
Q

Why is the organism separated from the chemical?

A

It would burn the organism

20
Q

Why does the coloured water rise in the tube?

A

The respiring organism absorbs the oxygen making it rise

21
Q

How is the volume of oxygen measured?

A

By measuring how high the coloured liquid has risen

22
Q

How is the rate of respiration calculated ?

A

Change of liquid then divide that by the number of mins

23
Q

State 3 key variables that will affect the rate of respiration.

A

Temperature
Glucose concentration
Oxygen level

24
Q

What gas is being taken up by the respiring organism?

A

Oxygen

25
Q

What gas is produced by the respiring organism?

A

carbon dioxide