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Bioenergetics > Week two-Redox reactions > Flashcards

Week two-Redox reactions Flashcards

1
Q

What is a synthesis reaction? And give an example

A

-Anabolic
-Endergonic
(A+B—-> AB)
Condensation reaction

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2
Q

What is an anabolic reaction?

A

Require energy

Build new molecules and/or store energy

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3
Q

What does endergonic mean?

A

Standard change in free energy is positive and energy is absorbed.

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4
Q

What is a decomposition reaction?

A

-Catabolic
-Exergonic
(AB—-> A+B)
Hydrolysis
Oxidation and reduction reactions

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5
Q

What does catabolic mean?

A

The breakdown of molecules into smaller units

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6
Q

What does exergonic mean?

A

When energy is released

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7
Q

What is a condensation reaction?

A

A reaction in which two larger molecules combine to form a large molecule producing H2O as a by product.

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8
Q

What is a hydrolysis reaction?

A

A catabolic process in which a water molecule is added to a substance.

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9
Q

What is an oxidation and reduction reaction?

A

Break-down of ‘food fuels’ in the body

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10
Q

What is an exchange reaction?

A

-Anabolic and catabolic
-Endergonic and exergonic
AB+C—–>AC+B

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11
Q

What is a redox reaction?

A

Includes decomposition and exchange reactions

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12
Q

What is a decomposition reaction?

A

Catabolism of macro-nutrients

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13
Q

Are oxidation and reduction always coupled?

A

Yes

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14
Q

Name the enzymes in redox reactions

A

Dehydrogenases

Oxidases

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15
Q

What is dehydrogenases involved in?

A

The removal of H

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16
Q

What is oxidases involved in?

A

The removal of O

17
Q

What are the coenzymes in redox reactions?

A

NAD+

FAD

18
Q

What are the features of coenzymes in redox reactions?

A
  • Less specific than enzymes
  • Act as co-binders
  • Temporary carriers
  • Reversible electron and hydrogen acceptors
19
Q

Give a definition of the mass action effect

A

The effect of the concentration of chemicals in solution on the occurrence of a particular chemical reaction.

20
Q

What will happen if there is an increase in the concentration of reactants?

A

The rate of forward reaction will increase

21
Q

What will happen if there is an increase in the concentration of products?

A

The rate of backwards reaction will increase

Bioenergetics (11 decks)

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