Copy of Tuesday (08/26) Enzymes Quiz Review - 2025 (5/2/2026)

Last updated about 2 hours ago

18 Nsɛmmisa

CER Practice

Ɛhia

Enzymes Quiz Review

Ɛhia

Enzymes are proteins that have a three-dimensional shape that is specific to a particular substrate. Environmental conditions can denature the shape of the enzyme.
If the enzyme is denatured, what is most likely to happen?

The substrate will still be able to bind to the enzyme's active site.

The enzyme will change the shape of its active site in order to fit the substrate.

The substrate will change its shape to match the enzyme.

The substrate will no longer be able to bind to the enzyme's active site.

Ɛhia

When an enzyme is denatured...

It loses its shape and can no longer catalyze chemical reactions.

It increases the energy needed to catalyze a chemical reaction.

It changes its shape to bind to new substrates.

It can speed up chemical reactions.

Ɛhia

If Enzyme A was placed into an environment with a pH of 8, which of the following would most likely occur?

The enzyme would denature but would find a new substrate to act on.

The enzyme would have an activity level of 50%.

The enzyme would denature and could not be used again.

The enzyme would function optimally at 100%.

Ɛhia

The animation below shows a molecule called an inhibitor acting on an enzyme.
Which of the following best describes the effect of inhibitors on enzymes?

Inhibitors create signals that allow immune cells to target and attack enzymes.

Inhibitors allow enzymes to produce even more enzymes, decreasing the activation energy in a solution.

Inhibitors prevent substrates from binding to enzymes, which prevents the enzyme from catalyzing a chemical reaction.

Inhibitors increase the size of the enzyme so they can bind to twice as many substrates.

Ɛhia

If the environment is too extreme, enzymes can denature.
What conditions would cause an enzyme to denature?

Extreme change in temperature

Change in light

Change in pH

Change in humidity

Ɛhia

When people eat undercooked chicken, they are at risk for contracting salmonella poisoning, a disease caused by the Salmonella bacteria. Symptoms include diarrhea, fever, stomach cramps, nausea, vomiting, chills, headache, and blood in stool. The CDC advises cooking chicken to the proper internal temperature to kill the bacteria inside of the food and avoid getting sick.
Why does heating your chicken to the proper temperature kill the Salmonella bacteria?

Heating the chicken makes the Salmonella bacteria move slower, so they fall off and die.

Heating the chicken denatures the enzymes in Salmonella bacteria, causing them to die.

Heating the chicken changes the pH of the chicken, so the Salmonella are no longer able to replicate.

Heating the chicken makes the Salmonella bacteria uncomfortable, so they leave the chicken for a better environment.

Ɛhia

Catecholase is an enzyme found in fruits such as apples, bananas, and avocados. When exposed to oxygen in the air, catecholase breaks down catechol and results in brown spots forming on the surface of fruits.
In an experiment, avocado was added into a test tube by itself, with water, and with lemon juice. The results of the experiment are shown below.
Which statement best explains why test tube C did not show any brown spots?

The lemon juice broke down the avocado before the enzyme could make brown spots.

The lemon juice changed the pH of the avocado and denatured the enzyme.

The lemon juice used up all of the enzyme so it couldn't produce brown spots.

The lemon juice colored all the spots yellow so that they don't appear brown.

	True	False
Enzymes are a special type of protein.
Enzyme have active sites that are specific in shape.
Enzymes can be denatured by temperature or pH.
Enzymes that are denatured can work optimally.

	True	False
Enzymes are a special type of protein.
Enzyme have active sites that are specific in shape.
Enzymes can be denatured by temperature or pH.
Enzymes that are denatured can work optimally.

Copy of Tuesday (08/26) Enzymes Quiz Review - 2025 (5/2/2026)

Copy of Tuesday (08/26) Enzymes Quiz Review - 2025 (5/2/2026)

Identify each statement about enzymes below as being true or false.

In order for a substrate to bind with an enzyme, they need:

Identify the optimal temperature of the enzyme below.
Select your answer on the number line.

Enzymes are proteins that have a three-dimensional shape that is specific to a particular substrate. Environmental conditions can denature the shape of the enzyme.
If the enzyme is denatured, what is most likely to happen?

When an enzyme is denatured...

If Enzyme A was placed into an environment with a pH of 8, which of the following would most likely occur?

The animation below shows a molecule called an inhibitor acting on an enzyme.
Which of the following best describes the effect of inhibitors on enzymes?

If the environment is too extreme, enzymes can denature.
What conditions would cause an enzyme to denature?

Identify each statement about enzymes below as being true or false.

In order for a substrate to bind with an enzyme, they need:

Identify the optimal temperature of the enzyme below.
Select your answer on the number line.

Enzymes are proteins that have a three-dimensional shape that is specific to a particular substrate. Environmental conditions can denature the shape of the enzyme.
If the enzyme is denatured, what is most likely to happen?

When an enzyme is denatured...

If Enzyme A was placed into an environment with a pH of 8, which of the following would most likely occur?

The animation below shows a molecule called an inhibitor acting on an enzyme.
Which of the following best describes the effect of inhibitors on enzymes?

If the environment is too extreme, enzymes can denature.
What conditions would cause an enzyme to denature?

Copy of Tuesday (08/26) Enzymes Quiz Review - 2025 (5/2/2026)

Copy of Tuesday (08/26) Enzymes Quiz Review - 2025 (5/2/2026)

Identify each statement about enzymes below as being true or false.

In order for a substrate to bind with an enzyme, they need:

Identify the optimal temperature of the enzyme below.Select your answer on the number line.

Enzymes are proteins that have a three-dimensional shape that is specific to a particular substrate. Environmental conditions can denature the shape of the enzyme.If the enzyme is denatured, what is most likely to happen?

When an enzyme is denatured...

If Enzyme A was placed into an environment with a pH of 8, which of the following would most likely occur?

The animation below shows a molecule called an inhibitor acting on an enzyme.Which of the following best describes the effect of inhibitors on enzymes?

If the environment is too extreme, enzymes can denature.What conditions would cause an enzyme to denature?

Identify each statement about enzymes below as being true or false.

In order for a substrate to bind with an enzyme, they need:

Identify the optimal temperature of the enzyme below.Select your answer on the number line.

Enzymes are proteins that have a three-dimensional shape that is specific to a particular substrate. Environmental conditions can denature the shape of the enzyme.If the enzyme is denatured, what is most likely to happen?

When an enzyme is denatured...

If Enzyme A was placed into an environment with a pH of 8, which of the following would most likely occur?

The animation below shows a molecule called an inhibitor acting on an enzyme.Which of the following best describes the effect of inhibitors on enzymes?

If the environment is too extreme, enzymes can denature.What conditions would cause an enzyme to denature?

Identify the optimal temperature of the enzyme below.
Select your answer on the number line.

Enzymes are proteins that have a three-dimensional shape that is specific to a particular substrate. Environmental conditions can denature the shape of the enzyme.
If the enzyme is denatured, what is most likely to happen?

The animation below shows a molecule called an inhibitor acting on an enzyme.
Which of the following best describes the effect of inhibitors on enzymes?

If the environment is too extreme, enzymes can denature.
What conditions would cause an enzyme to denature?

Identify the optimal temperature of the enzyme below.
Select your answer on the number line.

Enzymes are proteins that have a three-dimensional shape that is specific to a particular substrate. Environmental conditions can denature the shape of the enzyme.
If the enzyme is denatured, what is most likely to happen?

The animation below shows a molecule called an inhibitor acting on an enzyme.
Which of the following best describes the effect of inhibitors on enzymes?

If the environment is too extreme, enzymes can denature.
What conditions would cause an enzyme to denature?