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biology > Unit 2: Proteins and Enzymes > Flashcards

Unit 2: Proteins and Enzymes Flashcards

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AP® Biology flashcards
1
Q

What is the first step of organization in proteins?

A

Primary Structure

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2
Q

What is Primary Structure?

A

specific sequence of amino acids in a chain

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3
Q

What is the second step in protein?

A

Secondary Structure

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4
Q

What is the Secondary Structure?

A

folding or twisting of amino acids (alpha-helix or beta pleated sheets)

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5
Q

What is the third step in proteins?

A

Tertiary Structure

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6
Q

What is the Tertiary structure?

A

whole polypeptide chain folded, all proteins reach this level

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7
Q

What is the fourth step in proteins?

A

Quaternary Sturcture

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8
Q

What is the Quaternary Structure?

A

contains more than one polypeptide chain, not all proteins reach this

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9
Q

What is the causes to denatured proteins?

A

ph level or temperature change

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10
Q

What is Denatured Proteins?

A

proteins who lose their shape

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11
Q

What are enzymes?

A

proteins who control the chemical reactions in our cells

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12
Q

How do you start a chemical reaction?

A

chemical bonds need to be weakened in an “activation
process” where the molecules need to absorb energy

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13
Q

What is activation energy?

A

start up energy, activates the reactants and triggers the chemical reaction to start

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14
Q

How do enzymes work?

A

SPECIFIC and only catalyze (speed up) ONE chemical reaction, only allow for particalar reactant called substrates

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14
Q

What are catalysts?

A

speed up the rate at which
reactions occur so that life can be sustained

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15
Q

What is substrates?

A

One particular reactant that enzyme shape binds with

16
Q

What is active site?

A

The region where an enzyme’s specific substrate can bind

17
Q

What is the enzyme-substrate complex?

A

Once a substrate binds we call it an enzyme-substrate complex, which lowers the activation energy needed for a chemical reaction to take place

18
Q

does enzymes allow any more after enzyme-substrate complex is complete?

A

YESS
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biology (24 decks)

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