U2 Lesson 4 PRACTICE Enzymes

1.

Multiple Choice

1 min

1 pt

What is a substance called if it speeds up a chemical reaction?

reusable

catalyst

specific

fragile

2.

Multiple Choice

45 sec

1 pt

With what 3 letters do enzymes typically end?

-ose

-ase

-ese

-tic

3.

Multiple Choice

1 min

1 pt

Enzymes are an example of

Lipids

Carbohydrate

Protein

Nucleic Acid

4.

Multiple Choice

1 min

1 pt

Each enzyme only has 1 substrate that will fit its active site. What is this called?

reusable

catalyst

specific

fragile

5.

Multiple Choice

1 min

1 pt

In the diagram, what is letter A?

product

substrate

enzyme-substrate complex

active site

6.

Multiple Choice

1 min

1 pt

Letter D...

active site

enzyme

substrate

products

7.

Multiple Choice

1 min

1 pt

Letter B...

active site

enzyme

substrate

products

8.

Multiple Choice

1 min

1 pt

Letter C...

active site

enzymes

substrate

products

9.

Multiple Choice

1 min

1 pt

Letter E...

active site

enzyme

substrate

products

10.

Multiple Choice

45 sec

1 pt

An enzyme speeds up a reaction by

lowering the activation energy.

raising the activation energy.

releasing energy.

absorbing energy.

11.

Multiple Choice

1 min

1 pt

What is a substance called if it speeds up a chemical reaction?

reusable

catalyst

specific

fragile

12.

Multiple Choice

45 sec

1 pt

Enzymes speed up reaction rates by changing...

Activation Energy

pH

Hydrogen Bonds

Kinetic Energy

13.

Multiple Choice

1 min

1 pt

Any substance that is acted upon by an enzyme is called a(n)?

Coenzyme

Substrate

Vitamin

Polypeptide

14.

Multiple Choice

30 sec

1 pt

Enzymes will make a reaction go _______ and use ______ energy.

faster, less

faster, more

slower, less

slower, more

15.

Multiple Choice

45 sec

1 pt

Enzymes are composed of which of the following monomers?

amino acids

carbohydrates

nucleotides

monosaccharides

16.

Multiple Choice

30 sec

1 pt

What are the single sugars that are the building blocks of carbohydrates?

monosaccharides

disaccharides

polysaccharides

amino acid

17.

Multiple Choice

30 sec

1 pt

What are the building blocks of proteins?

amino acid

fatty acid

nucleotide

lipid

18.

Multiple Choice

30 sec

2 pts

The element _______is found in all of the organic compounds.

Iron

Nitrogen

Carbon

Oxygen

19.

Multiple Choice

30 sec

2 pts

Nucleotides are monomers of

Carbohydrates

Lipids

Proteins

Nucleic Acids

20.

Multiple Choice

30 sec

1 pt

Which of the following organic compounds is the main source of energy for living things?

carbohydrates

lipids

nucleic acids

proteins

21.

Multiple Choice

30 sec

2 pts

Which macromolecule stores energy, insulates us, and makes up the cell membrane?

lipids

proteins

carbohydrates

nucleic acids

22.

Multiple Choice

20 sec

1 pt

The primary function of protein is to

build and repair tissue

provide energy

build cells

Transport vitamins

23.

Multiple Choice

30 sec

2 pts

RNA and DNA are which type of macromolecules?

carbohydrate

lipid

nucleic acid

protein

24.

Multiple Choice

1 min

1 pt

What type of macromolecule are enzymes?

Protein

Carbohydrate

Lipid

Nucleic Acid

25.

Multiple Choice

30 sec

1 pt

What is the monomer of carbohydrates?

Monosaccharide

Nucleotide

Fatty Acid

Amino Acid

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