Enzyme Review - Assessment

1.

Multiple Choice

30 sec

1 pt

What type of enzyme is shown in the picture?

Anabolic

Catabolic

There's no way to tell

2.

Multiple Choice

30 sec

1 pt

When an enzyme tightens around a substrate, this is called:

An awkward hug

Induced fit

Competitive Inhibition

Non competitive Inhibition

3.

Multiple Choice

30 sec

1 pt

As temperature increases, the rate of reaction for enzymes will generally ______.

increase

decrease

not be affected

4.

Multiple Choice

30 sec

1 pt

Fill in the blank: Enzymes act as __________ which speed up chemical reactions.

Competitors

Co enzymes

Catalysts

Tiny sumo wrestlers

5.

Multiple Choice

30 sec

1 pt

What's going on in this picture?

The enzyme is taking the red substrate and turning it blue

The enzyme's active site is blocked by a competitive inhibitor

The enzyme can't function if too many substrates are trying to bind

This is an example of an anabolic enzyme reaction

6.

Multiple Choice

30 sec

1 pt

In non-competitive inhibition, a molecule will ______.

bind in the enzyme's active site

bind in a separate site on the enzyme besides the active site

will not bind to the enzyme

7.

Multiple Select

30 sec

1 pt

If a non-competitive inhibitor binds to an enzyme, what happens to the active site? Choose all that apply.

The active site changes shape and no longer accepts substrates

The active site may become blocked and no longer accepts substrates

The active site accepts substrates at a faster rate

The active site will then accept a competitive inhibitor and shut down

8.

Multiple Select

30 sec

1 pt

How do enzymes speed up chemical reactions. Select all that apply.

They heat up molecules in their vicinity which makes them react faster

They lower activation energy (energy required to start a reaction)

They do a sort of molecular hug and weaken chemical bonds

They sing love songs to lure substrates into their active site

9.

Multiple Choice

30 sec

1 pt

Which of the following would increase an enzyme's reaction rate the MOST?

Putting an enzyme and substrate solution in ice

Putting an enzyme and substrate solution in VERY hot water

Stirring an enzyme and substrate solution

10.

Multiple Choice

30 sec

1 pt

If an enzyme is placed in a strong acid (low pH), which of the following is likely to happen?

It will increase the rate of reaction of the enzyme

It will cause the enzyme to denature and drastically decrease the rate of reaction

pH doesn't effect enzyme rate of reaction. It would continue working at its normal pace

11.

Multiple Choice

30 sec

1 pt

Which of the following is likely the name of an enzyme?

Lactose

Fructose

Sucrase

Galactose

12.

Multiple Choice

30 sec

1 pt

Enzymes are a type of ________ protein, which means they are __________.

fibrous; hydrophobic

fibrous; hydrophilic

globular; hydrophobic

globular; hydrophilic

13.

Multiple Choice

30 sec

1 pt

An electron carrier molecule (like NADH) is called a(n) ________, because it assists the enzyme in turning substrates into products

Co-enzyme

Cofactor

Inhibitor

14.

Multiple Choice

30 sec

1 pt

An inorganic molecule that is needed to complete an enzyme's structure and therefore its function is called a(n) ______

Cofactor

Co-enzyme

Inhibitor

15.

Multiple Choice

30 sec

1 pt

When an enzyme loses it's 3 dimensional shape, it becomes _____.

denatured

free at last

a super enzyme

16.

Multiple Choice

30 sec

1 pt

Which enzyme would likely break down milk sugar?

Sucrase

Lactase

Lactose

Fructose

17.

Multiple Choice

30 sec

1 pt

A catabolic enzyme would rely on using a _________ reaction in order to _________ substrate

Dehydration; build a larger

Hydrolysis; build a larger

Dehydration; break down the

Hydrolysis; break down the

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