Day 1: Enzymes

1

Label the diagram components below.

Andre svarmuligheder:

Substrate

RNA

DNA

Active Site

Enzyme

Product

1

For an enzyme to be able to catalyze a reaction, the active site must -
(2021)

be occupied by an inhibitor.

increase the activation energy level.

have a complementary (goes together) shape to the substrate.

cause the enzyme to be destroyed in the reaction.

B.C.9C

1

Select TWO true statements from the list below describing enzymes:

Enzymes have specific structures for specific functions

Enzymes that denature can no longer function

Enzymes function optimally in all temperatures and pH levels

Enzymes are a specific type of carbohydrate

1

The diagram represents one way an enzyme can be inhibited.
Which statement explains the effect of an inhibitor on an enzyme?

A substrate will be able to bond with the enzyme.

The enzyme will likely be attacked by immune cells.

The enzyme will be unable to produce more enzymes.

A substrate will be unable to attach to the enzyme.

B.C.9C

1

The graphs show the reaction rate for an enzyme across a range of temperatures and pH.
Based on these data, this enzyme functions best at what temperature and pH?
(2018)

Temperature of 27^oC and a pH of 4

Temperature of 37^oC and a pH of 6

Temperature of 40^oC and a pH of 8

Temperature of 50^oC and a pH of 10

B.C.9C

1

Taq polymerase is an enzyme used in the polymerase chain recation (PCR) to replicate fragments of DNA. A study published in 1976 examined the peroperties of Taq polymerase after the enzyme was isolated from Thermus aquaticus, a thermophilic bacterium that lives in the hot springs of Yellowstone National Park. The graph shows one of the results of the study.
Which statement about enzyme activity is best supported by this graph?
(2017)

An enzyme must be composed of mulitple polypeptides, or subusnits, to be active.

An enzyme's rate of activity increases with time until it becomes inactive.

An enzyme functions best under specific temperature conditions.

An enzyme works equally well in bacteria that are acapted to high temperatures and in eukaryotic.

B.C.9C

1

Structural changes in an enzyme can affect its ability to function correctly. This denaturation can occur as a result of _______________.

Extreme temperature change

Change in pH

Addition of substrates

Both A and B are correct

1

Enzymes are a diverse group of biological catalysts. Enzymes act as catalysts, because they...

Speed up chemical reactions in our body by lowering activation energy.

Increase the amount of energy needed to break down substrates.

Give us immediate, quick energy.

Can act on any substrate molecule at any time.

Day 1: Enzymes

For an enzyme to be able to catalyze a reaction, the active site must -(2021)

Select TWO true statements from the list below describing enzymes:

The diagram represents one way an enzyme can be inhibited. Which statement explains the effect of an inhibitor on an enzyme?

The graphs show the reaction rate for an enzyme across a range of temperatures and pH. Based on these data, this enzyme functions best at what temperature and pH?(2018)

Structural changes in an enzyme can affect its ability to function correctly. This denaturation can occur as a result of _______________.

Enzymes are a diverse group of biological catalysts. Enzymes act as catalysts, because they...

For an enzyme to be able to catalyze a reaction, the active site must -(2021)

Select TWO true statements from the list below describing enzymes:

The diagram represents one way an enzyme can be inhibited. Which statement explains the effect of an inhibitor on an enzyme?

The graphs show the reaction rate for an enzyme across a range of temperatures and pH. Based on these data, this enzyme functions best at what temperature and pH?(2018)

Structural changes in an enzyme can affect its ability to function correctly. This denaturation can occur as a result of _______________.

Enzymes are a diverse group of biological catalysts. Enzymes act as catalysts, because they...

For an enzyme to be able to catalyze a reaction, the active site must -
(2021)

The diagram represents one way an enzyme can be inhibited.
Which statement explains the effect of an inhibitor on an enzyme?

The graphs show the reaction rate for an enzyme across a range of temperatures and pH.
Based on these data, this enzyme functions best at what temperature and pH?
(2018)

For an enzyme to be able to catalyze a reaction, the active site must -
(2021)

The diagram represents one way an enzyme can be inhibited.
Which statement explains the effect of an inhibitor on an enzyme?

The graphs show the reaction rate for an enzyme across a range of temperatures and pH.
Based on these data, this enzyme functions best at what temperature and pH?
(2018)