Enzyme Test - '23

Last updated about 2 years ago

16 questions

Required

1

Required

1

Required

1

Required

1

Required

1

Required

1

Required

4

Required

1

Required

1

Required

1

Required

3

Required

6

Required

2

Required

4

Required

5

Required

5

Library

Enzyme Test - '23

Last updated about 2 years ago

16 questions

Required

1

The sum of all the chemical reactions in an organism is called_______ 

Required

1

All chemical reactions require_______ _______in order for the reaction to begin

Required

1

This energy graph shows a_______ reaction

Required

1

This energy graph shows a_______ reaction

Required

1

Required

1

Required

4

Required

1

Required

1

Required

1

Required

3

Draggable item		Corresponding Item

Required

6

Required

2

On the graph below, sketch the rate of reaction graph for an enzyme-catalyzed reaction, where the optimal pH is 8

Required

4

on the graph skeleton below, draw a LINE that shows an endothermic reaction WITHOUT an enzyme and then a SECOND LINE that shows the reactions WITH an enzyme. YOU NEED TO DRAW 2 LINES - USE 2 DIFFERENT COLORS OR MAKE ONE SOLID AND ONE DASHED and then LABEL one line "with enzyme" and the other line "without enzyme"

Required

5

Explain HOW enzymes catalyze chemical reactions and then explain WHY enzymes are needed to catalyze chemical reactions in order for an organism to be alive

Required

5

Explain WHAT would happen to the rate of reaction of lipase if it was put into an environment with a pH of 2 (like where pepsin works in the stomach? Then explain WHY that would happen?

The sum of all the chemical reactions in an organism is called_______ 

All chemical reactions require_______ _______in order for the reaction to begin

This energy graph shows a_______ reaction

This energy graph shows a_______ reaction

Once an ATP molecule is used to release energy (ATP --> ADP + P + ENERGY), that ATP molecule is used up and can never be used again

True

False

Why would sucrose not get broken down (hydrolysis) into glucose and fructose by the enzyme lactase?

sucrose would not be able to fit into the active site of lactase

sucrose is a monosaccharide so does not need to be broken down

false - lactase can break down any of the 3 disaccharides

lactase would become denatured by sucrose

Put the steps of this enzyme reaction in order from first to last ....

What point on the graph represents the activation energy?

Which has more stored energy in this energy graph of an exothermic reaction?

the reactants

the products

neither - they have the same amount of enrgy

In the lock and key model of of enzyme function shown above, what is happening in step 3?

The enzyme is causing new bonds to form between the substrate

The substrates are beginning to bind to the enzyme

The active sites are restructuring the enzyme.

The product (2 substrates with chemical bond connecting them) has left the active site

This diagram shows what happens to lactose in the small intestine with lactase present

Draggable item		Corresponding Item
glucose + galactose		substrate
lactase		products
lactose		enzyme

Drag one of the two reactions to each of the catergories

Item 1
Item 2

Catabolic/Breaking Rx
Anabolic/Making Rx
1 substrate broken into 2 products
2 substrates bonded into 1 product
Would happen inside the small intestine/digestion
Would happen in the mammary glands of female mammals as part of the making milk for their newborns

On the graph below, sketch the rate of reaction graph for an enzyme-catalyzed reaction, where the optimal pH is 8

on the graph skeleton below, draw a LINE that shows an endothermic reaction WITHOUT an enzyme and then a SECOND LINE that shows the reactions WITH an enzyme. YOU NEED TO DRAW 2 LINES - USE 2 DIFFERENT COLORS OR MAKE ONE SOLID AND ONE DASHED and then LABEL one line "with enzyme" and the other line "without enzyme"

Explain HOW enzymes catalyze chemical reactions and then explain WHY enzymes are needed to catalyze chemical reactions in order for an organism to be alive

Explain WHAT would happen to the rate of reaction of lipase if it was put into an environment with a pH of 2 (like where pepsin works in the stomach? Then explain WHY that would happen?

Once an ATP molecule is used to release energy (ATP --> ADP + P + ENERGY), that ATP molecule is used up and can never be used again

True

False

Why would sucrose not get broken down (hydrolysis) into glucose and fructose by the enzyme lactase?

sucrose would not be able to fit into the active site of lactase

sucrose is a monosaccharide so does not need to be broken down

false - lactase can break down any of the 3 disaccharides

lactase would become denatured by sucrose

Put the steps of this enzyme reaction in order from first to last ....

What point on the graph represents the activation energy? 

A

B

C

D

E

Which has more stored energy in this energy graph of an exothermic reaction?

the reactants

the products

neither - they have the same amount of enrgy

In the lock and key model of of enzyme function shown above, what is happening in step 3?

The enzyme is causing new bonds to form between the substrate

The substrates are beginning to bind to the enzyme

The active sites are restructuring the enzyme.

The product (2 substrates with chemical bond connecting them) has left the active site

This diagram shows what happens to lactose in the small intestine with lactase present

glucose + galactose

substrate

lactase

products

lactose

enzyme

Drag one of the two reactions to each of the catergories 

Item 1

Item 2

Catabolic/Breaking Rx

Anabolic/Making Rx

1 substrate broken into 2 products

2 substrates bonded into 1 product

Would happen inside the small intestine/digestion

Would happen in the mammary glands of female mammals as part of the making milk for their newborns