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Biology > Lab 5 > Flashcards

Lab 5 Flashcards

1
Q

Input of energy required for a chemical reaction to occur

A

Activation energy

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2
Q

Activation energy is greater than the energy produced by the reaction

A

Endergonic

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3
Q

Activation energy is less than the energy produced by the reaction

A

Exergonic

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4
Q

Catalysts produced by cells to catalyze the chemical reactions that occur within the cells

A

Enzymes

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5
Q

Proteins composed of amino acids linked together by peptide bonds to form polypeptide chains

A

Enzymes

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6
Q

Amino acids linked together by peptide bonds to form

A

Polypeptide chains

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7
Q

A specific substance (reactant) on which an enzyme acts

A

Substrate

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8
Q

Where the substrate binds with the enzyme

A

Active site

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9
Q

Enzyme obtained from potato

A

Catalase

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10
Q

Catalase catalyze the breakdown of hydrogen peroxide into

A

Water and oxygen

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11
Q

Enzyme that digests starch vía hydrolysis into glucose and maltose

A

Amylase

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12
Q

Which of the four types of organic molecules are enzymes?

A

Proteins

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13
Q

speed up the rate of chemical reactions by lowering the activation energy

A

catalysts

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14
Q

examples of catalysts

A

catalase (from potato cells) amylase (digests starch)

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15
Q

Explain how a substrate/reactant enters the active site of an enzyme and exits as the product.

A

substrate binds with enzyme at its active site and is catalyzed then released as products

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16
Q

as long as there is a substrate…

A

product will be made

17
Q

catalyzes the breakdown of hydrogen peroxide into water and oxygen

A

catalase

18
Q

digests starch via hydrolysis into glucose and maltose (a disaccharide composed of two glucose molecules)

A

amylase

19
Q

2h202->2h20+02 What is the substrate (reactant), enzyme, and product for each of the chemical reactions?

A

substrate: 2h202
enzyme: catalase
product: 2h20+02

20
Q

What is catalase’s substrate? How could you tell? What did you measure to determine activity?

A

hydrogen peroxide. only content that produced bubbles. tested by bubble height

21
Q

Explain how increasing or decreasing the amount of enzyme affects reaction speed.

A

more enzyme = faster reaction

22
Q

Explain how increasing or decreasing the amount of substrate affects product production.

A

more substrate = more product

23
Q

reaction amylase catalyzes

A

starch -> reducing sugars

24
Q

Describe what will happen if when salivary amylase mixes with starch.

A

iodine: turns purple, starch is present
benedicts: turns orange reducing sugar is present
A POSITIVE REACTION WILL OCCUR

Biology (24 decks)

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