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Introductory Biochemistry > Respiration Pathways > Flashcards

Respiration Pathways Flashcards

1
Q

What is catabolism?

A

The breakdown of macromolecules, usually linked to energy production

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2
Q

ADP + Pi = ?

A

ADP + Pi = ATP + H2O

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3
Q

What is anabolism?

A

The building up of macromolecules from smaller molecules, usually requires energy

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4
Q

Is oxidation a catabolic or anabolic reaction?

A

Catabolic

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5
Q

Is biosynthesis a catabolic or anabolic reaction?

A

Anabolic

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6
Q

What is an exergonic reaction?

A

A chemical reaction where the change in the free energy is negative

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7
Q

What is an endergonic reaction?

A

Requires energy input to take simple reactants and build them up into complex products

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8
Q

What is meant by a ‘steady-state’ reaction?

A

The concentration of every component of the pathway will remain the same throughout if they are considered to be in a steady state - in equilibrium

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9
Q

What are the four stages of glucose catabolism?

A
  1. Glycolysis
  2. Link reaction
  3. TCA cycle
  4. Electron transport chain
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10
Q

How much ATP is generated per one glucose molecule?

A

36 ATP

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11
Q

What is the end product of glycolysis?

A

Two pyruvate molecules (3C)

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12
Q

How much ATP is generated from glycolysis per glucose molecule?

A

2 net ATP and 2 FADH, with a total of 4 ATP

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13
Q

Where does glycolysis occur?

A

In the cytoplasm

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14
Q

How much ATP is produced in the ETC from one FADH?

A

2 ATP

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15
Q

How much ATP is produced in the ETC from one NADH?

A

3 ATP

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16
Q

How much, if any, ATP is generated from the Link reaction per glucose molecule?

A

0 ATP but 2 NADH, which results in 6 ATP

17
Q

How much ATP is generated from one glucose molecule during the TCA cycle?

A

2 ATP, 6 NADH, and 2 FADH, so a total of 24 ATP

18
Q

How many CO2 molecules are produced by the TCA cycle?

A

4 CO2

19
Q

How much ATP is produced per glucose molecule by the end of the ETC?

A

32 from ETC, 2 from glycolysis, and 2 from the TCA cycle = 36 ATP

Introductory Biochemistry (16 decks)

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