Enzyme Test Gen Bio

Last updated over 2 years ago

19 questions

Required

1

Required

1

Required

1

Required

1

Required

3

Required

6

1

Required

5

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Enzyme Test Gen Bio

Last updated over 2 years ago

19 questions

Required

1

Required

1

Required

1

Required

1

Required

1

Required

1

Required

1

Required

1

Required

1

Required

1

Required

1

Required

1

Required

1

Required

1

Required

3

Required

3

Draggable item		Corresponding Item

Required

6

1

Required

5

Explain why enzymes must work correctly in order for life to exist!

Which type of molecule are enzymes?

Lipids

Carbohydrates

Nucleotides

Proteins

Enzymes only work with specific substrates because each enzyme:

Has an active site which only fits substrates with a particular shape.

Can only make ionic bonds.

Cannot change shape.

Becomes denatured when it is heated.

Changes in the shape of an enzyme can affect its ability to function correctly. This loss of shape (denaturation) can occur as a result of _______________.

Extreme temperature change

Change in pH

a rainy day

Both A and B are correct

Required

1

In the lock and key model of of enzyme function shown above, what is happening in step 2?

The enzyme is causing a new bonds to form between the 2 substrates.

The substrates are beginning to bind to the enzyme

The enzyme is breaking the bond between the 2 substrates

The catalyzed reaction is releasing a product.

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

Which of the following is NOT correct about enzymes?

Enzymes are destroyed after each reaction and therefore must be synthesized again

Enzymes are specific because of their shape and catalyze only certain reactions

Explain why enzymes must work correctly in order for life to exist!

This is the

substrate

enzyme

active site

This is the

substrate

enzyme

active site

This is the

substrate

enzyme

active site

product

Answer MCQ

A

B

C

D

Which type of molecule are enzymes?

Lipids

Carbohydrates

Nucleotides

Proteins

Enzymes only work with specific substrates because each enzyme:

Has an active site which only fits substrates with a particular shape.

Can only make ionic bonds.

Cannot change shape.

Becomes denatured when it is heated.

Changes in the shape of an enzyme can affect its ability to function correctly. This loss of shape (denaturation) can occur as a result of _______________.

Extreme temperature change

Change in pH

a rainy day

Both A and B are correct

At about what temperature do BOTH the human enzyme and thermophilic enzyme catalyze (help the reaction go) chemical reaction (at least a little)? Hint - look at where the 2 lines overlap!

Which enzyme from the graph would most likely be found in a bacterium living in hot springs (close to the boiling point of water)?

the thermophilic enzyme (red line)

the human enzyme (black line)

neither enzyme 

both enzymes

In the lock and key model of of enzyme function shown above, what is happening in step 2?

The enzyme is causing a new bonds to form between the 2 substrates.

The substrates are beginning to bind to the enzyme

The enzyme is breaking the bond between the 2 substrates

The catalyzed reaction is releasing a product.

At what temperature does this enzyme work the fastest (optimal temp.)?

0

20

40

60

Answer MCQ

A

B

C

D

Which enzyme works best (optimal pH) in an acidic environment (pH less than 7)

Which enzyme works best (optimal pH) in a neutral environment?

chymrotrypsin

pepsin

both enzymes

What happens to the enzyme when the pH increases/decreases above/below its optimal pH?

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

Which of the following is NOT correct about enzymes?

Enzymes are destroyed after each reaction and therefore must be synthesized again

Enzymes are specific because of their shape and catalyze only certain reactions

This is the

substrate

enzyme

active site

This is the 

substrate

enzyme

active site

This is the

substrate

enzyme

active site

product

Answer MCQ

A

B

C

D

At about what temperature do BOTH the human enzyme and thermophilic enzyme catalyze (help the reaction go) chemical reaction (at least a little)?   Hint - look at where the 2 lines overlap!

37

77

44

60

20

Which enzyme from the graph would most likely be found in a bacterium living in hot springs (close to the boiling point of water)?

the thermophilic enzyme (red line)

the human enzyme (black line)

neither enzyme 

both enzymes

At what temperature does this enzyme work the fastest (optimal temp.)?

0

20

40

60

Answer MCQ

A

B

C

D

Which enzyme works best (optimal pH) in a neutral environment?

chymrotrypsin

pepsin

both enzymes