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Bio 1 > Ch 8: Metabolism > Flashcards

Ch 8: Metabolism Flashcards

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Biology 101 flashcards
1
Q

Kinetic

A

Energy in motion

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2
Q

Potential Energy

A

Stored energy

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3
Q

Thermodynamics

A

Study of E transformations

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4
Q

What is the first law of thermodynamics?

A

E cannot be created nor destroyed

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5
Q

What is the second law of thermodynamics?

A

Every E transfer increases entropy; E for work decreases with each reaction

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6
Q

Endergonic reaction

A

Require energy input (potential energy difference between reactants and products)

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7
Q

Exergonic reaction

A

Release E( potential E same in reactants and products)

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8
Q

What orocess releases E from ATP?

A

Hydrolysis

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9
Q

Where is most E located in ATP?

A

The covalent bond between 2nd and 3rd phosphate groups

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10
Q

ATP is not easily hydrolyzed

A

Wrong, it is

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11
Q

What does ATP split into when hydrolyzed?

A

ATP and Pi (phosphate group)

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12
Q

What does the phosphate group in ATP do?

A

Phosphorylates cell chemicals to energize reactiojsu

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13
Q

Endergonic reactions do what to ADP?

A

Phosphorylate it to produce ATP

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14
Q

ATP is a … resource

A

Renewable

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15
Q

E of activation

A

Energy needed to start a rxn

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16
Q

Enzymes can lower activation E and gibbs free energy

A

F, they cant lower gibbs free energy

17
Q

Enzymes are non specific

A

Wrong, they catalyze specific rxns

18
Q

What percent of the world is lactose intolerant?

A

70%

19
Q

Lactose intolerance is often

A

Hereditary

20
Q

Whats the one factor that can affect enzyme activity that weve never heard of before in life?

A

Presence of co factors

21
Q

What do inhibitors do?

A

Block enzyme action

22
Q

Competetive inhibbies

A

Bind to active site

23
Q

Non competitive inhibbies

A

Bind to secondary site on enzyme

24
Q

Negative feedback

A

Inhibition by product of rxn

25
Q

Inhibitors are short term

A

True

26
Q

Examples of inhibitors

A

Pesticides and antibiotics

Bio 1 (9 decks)

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