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Biology > Respiration > Flashcards

Respiration Flashcards

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1
Q

Respiration is…

A

A chemical process in which energy is released from molecules in cells

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2
Q

The main food molecule used in cells is…

A

Glucose

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3
Q

What happens to glucose during respiration?

A

During respiration glucose is broken down in a series of enzyme controlled reactions

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4
Q

What is ATP

A

Adenosine triphosphate is an important substance found in all living cells
Used by the cell as an immediate source of chemical energy

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5
Q

Aerobic respiration is…

A

The process by which energy is released during the breakdown of glucose using oxygen

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6
Q

What are the two stages of aerobic respiration?

A

1: Glycolysis
2: break down of pyruvate

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7
Q

Glycolysis is…

A

The breakdown of glucose resulting in the formation of 2 molecules of pyruvate

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8
Q

Show a diagram of glycolysis

A

Glucose
/ \ enzyme controlled
/ \ Reactions
Pyruvate Pyruvate
(Contains (Contains
Chemical Chemical
Energy ) Energy)

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9
Q

When is the chemical energy from pyruvate released

A

Stage 2

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10
Q

Draw a diagram of stage 2

A 
Pyruvate 
                    \+
              Oxygen 
                     |          Enzyme controlled 
                     |                 Reactions
                    \/
         Carbon dioxide 
                     \+
                Water
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11
Q

In what stage is more ATP produced

A

Stage 2

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12
Q

How many ATP does stage 1 give

A

2 ATP

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13
Q

How much ATP is produced in stage 2

A

36 ATP

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14
Q

How much ATP is produced in aerobic respiration

A

38 ATP

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15
Q

What is fermentation

A

The breakdown of glucose in cells without oxygen

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16
Q

Diagram of fermentation

A 
Glucose 
                |     /
                |     \    ATP
        Pyruvate 
               |    (No oxygen)
               |
        Lactate     No ATP formed
17
Q

Where does glycolysis take place?

A

The cytoplasm

18
Q

Where is stage 2 of fermentation carried out

A

Cytoplasm

19
Q

In aerobic respiration stage 2 is carried out in….

A

Mitochondria

Biology (15 decks)

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