Twa kɔ nsɛm atitiriw so

Sign up for FREE

Copy of MOD Enzymes Quiz 2025 (8/11/2025) (5/2/2026)

Last updated about 3 hours ago

9 Nsɛmmisa

Ɛhia

1

BIO.11.B

Ɛhia

1

BIO.11.B

Ɛhia

1

BIO.11.B

1

BIO.11.B

Ɛhia

1

BIO.11.B

Ɛhia

1

BIO.11.B

Ɛhia

1

BIO.11.B

Ɛhia

1

BIO.11.B

Ɛhia

1

BIO.11.B

Asemmisa {{asɛmmisaAhyɛnsode}}

1.

Individuals with lactose intolerance cannot properly digest lactose (protein found in dairy) on their own. An advertisement for Lactaid, a Lactase Enzyme Supplement, is shown below. It claims to let people "enjoy dairy again".
Which of the following represents evidence that could be used to support the claims about this product? Which answer gives a reason that shows us that this product works?

The Lactaid changes milk into a neutral water solution, which makes it a good source of fiber, vitamins, antioxidants, and minerals.

The lactase supplement adds beneficial bacteria to a person's diet. These bacteria populate the stomach and prevent dairy digestion.

Consuming lactase, the enzyme specific for lactose digestion, helps the body break down lactose more quickly in the stomach and small intestines.

Asemmisa {{asɛmmisaAhyɛnsode}}

2.

The graphs below 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?

Temperature of 40^oC and a pH of 8

Temperature of 27^oC and a pH of 4

Temperature of 37^oC and a pH of 6

Asemmisa {{asɛmmisaAhyɛnsode}}

3.

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

The enzyme will be unable to produce more enzymes.

A substrate will be unable to attach to the enzyme.

A substrate will be able to bond with the enzyme.

Asemmisa {{asɛmmisaAhyɛnsode}}

4.

Structural changes in an enzyme can affect its ability to function correctly. What changes can result in denaturation?
Select TWO correct answers.

Extreme temperature change

Change in pH

Addition of substrates

Asemmisa {{asɛmmisaAhyɛnsode}}

5.

Liver contains the enzyme catalase, which breaks down hydrogen peroxide into water and oxygen gas. Samples of liver from various treatments were added to three different vials with 10 drops of hydrogen peroxide. Each vial was then observed for the next 30 seconds. The data collected during the experiment is shown below.
Which statement best explains the results of test tubes 1 & 3?

The enzymes were in optimal conditions and the enzymes broke down their substrates

The enzymes were removed from its optimal environment and its activity was lowered

The results in tubes 1 & 3 can best be attributed to experimental error.

Asemmisa {{asɛmmisaAhyɛnsode}}

6.

During hurricane season, it is important to stock up on canned foods. Canned foods do not spoil and can be left in a pantry for years at a time. These preserved foods are safe to eat because during the canning process the foods are heated to extremely high temperatures to kill the bacteria inside of the food.
Why does heating during the canning process kill bacteria, extending the shelf life of these foods?

The bacteria grow uncomfortable and leave the food for better environments.

The bacterial enzymes are denatured by the high heat causing the bacteria to die.

The bacterial enzymes are denatured by the change in pH causing the bacteria to die.

Asemmisa {{asɛmmisaAhyɛnsode}}

7.

Enzymes are biological catalysts. Which statement about the enzymes is NOT correct?

Enzymes are destroyed when they are used

Enzymes can be reused

Enzymes always have a specific shape

Asemmisa {{asɛmmisaAhyɛnsode}}

8.

A certain enzyme will separate egg whites into multiple compounds using water but will not separate starch. Which statement best explains why?

Enzymes are specific in their actions

Starch is composed of amino acids

Starch molecules are too large to be separated.

Asemmisa {{asɛmmisaAhyɛnsode}}

9.

A substrate is a substance that is affected by an enzyme. In order for an enzyme to be effective, it must -

bind to a substrate, transform itself and the substrate into products, and cause these products to dissolve

bind to a substrate, transform the substrate into products, and release the products.

bind to a substrate, transform itself into products, and release these products into the substrate