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Biomolecules and Enzymes Test Review

Total questions: 47

Worksheet time: 59mins

Name
Class
Date
1.

Which organic molecule would a long-distance runner most likely choose to eat two hours before a race?

a)

A protein, because it builds muscle mass.

b)

A lipid because it provides long term energy storage.

c)

A carbohydrate because it releases energy quickly.

d)

A protein, because it transports oxygen into the blood stream.

2.

How are the functions of a carbohydrate and a lipid similar?

a)

Both are a source of energy.

b)

Both are replicated during meiosis.

c)

Both lower the activation energy of reactions.

d)

Both dissolve nutrients in the digestive system.

3.

Why is the “lock and key” analogy often used to describe enzyme function?

a)

Each enzyme is the same as its substrate.

b)

Each enzyme will fit with only one specific kind of substrate.

c)

Each enzyme can only be used once in a reaction and cannot be used again.

d)

Each enzyme has its own active site that will not fit with other active sites.

4.

Some individuals are unable to digest the lactose found in the milk of cows. The digestive systems of these individuals MOST likely lack which?

a)

a lipid that coats lactose molecules

b)

an ability to produce lactose internally

c)

an enzyme that catalyzes lactose breakdown

d)

a tolerance to lactose developed during childhood

5.

Why are proteins important to the survival of animals?

a)

Proteins provide the body with quick-energy.

b)

Proteins provide insulation.

c)

Proteins provide genetic information to cells.

d)

Proteins provide muscle fiber for the body

6.

What are the monomers of a lipid?

a)

fat cubes and glycogen

b)

glycerol and amino acids

c)

fatty acids and glycerol

d)

amino acids

7.

What are the monomers of a carbohydrate?

a)

carbs

b)

celluose

c)

amino acids

d)

monosaccharide

8.

Nucleotides are a monomer of which biomolecule?

a)

Nucleic acids

b)

Proteins

c)

Carbohydrates

d)

Lipids

9.

What are the two factors that would cause an enzyme to denature?

a)

Substrates and products

b)

Proteins and fats

c)

Extreme pH and temperatures

d)

Lemons and Kiwis

10.
What elements make up carbohydrates?
a)
Carbon, hydrogen, nitrogen, oxygen
b)
sulfur, carbon, hydrogen
c)
glucose and fructose
d)
carbon, hydrogen, oxygen
11.
The monomer of a protein is called...
a)
an amino acid
b)
a monosaccharide
c)
a fatty acid
d)
a nucleotide
12.
The monomer of a nucleic acid is called... 
a)
an amino acid
b)
a fatty acid
c)
a monosaccharide
d)
a nucleotide
13.
Enzymes are considered to be 
a)
Lipids
b)
Carbohydrate
c)
Protein
d)
Nucleic Acid
14.
What is the purpose  of an enzyme?
a)
give permission for the reaction
b)
raise activation energy
c)
speed up reactions
d)
control how many reactions occur
15.
Enzymes are capable of increasing the rate of a chemical reaction within a living cell.  Enzymes accomplish this through which of the following means?
a)
reducing the number of products   
b)
reducing the activation energy
c)
increasing the temperature of the cell
d)
increasing the concentration of reactants 
16.
What is structure A?
a)
Substrate
b)
Active site
c)
Enzyme
d)
Products
17.
Which of the following conclusions can be drawn from this graph?
a)
The optimum pH of the enzyme is 6.6.
b)
The optimum pH of the enzyme is 5.8
c)
The enzyme’s activity increases as pH increases 5.0 to 9.0
d)
The enzyme’s activity is greater around pH of 8.0 .
18.

Which enzyme would most likely function well in the stomach?

a)

Chymotrypsin

b)

Cholinesterase

c)

Pepsin

d)

Papain

19.
What 3 letters do enzymes typically end in?
a)
-ose
b)
-ase
c)
-ese
d)
-tic
20.

What is a biomolecule?

a)

The dissolved particle in a solution

b)

One of the by-products of respiration

c)

Large molecule that is present in living organisms

d)

None of the above

21.

Which of the following are biomolecules?

a)

RNA, DNA, proteins, lipids

b)

Proteins, lipids, carbohydrates, polymers

c)

Nucleic acid, lipids, carbohydrates, monomers

d)

Proteins, lipids, carbohydrates, nucleic acids

22.
What elements are common to all 4 biomolecules?
a)
Carbon, hydrogen, nitrogen
b)
Carbon, Nitrogen, Phosphorus
c)
Carbon, Hydrogen, Oxygen
d)
Carbon, Hydrogen, Phosphorus
23.
What does the word organic mean?
a)
has nitrogen
b)
has sulfur
c)
has carbon
d)
has oxygen
24.
A monomer is ...
a)
a single atom
b)
a building block for polymers
c)
a single element
d)
is an inorganic molecule
25.
What biomolecule do enzymes belong to? 
a)
Carbohydrate
b)
Lipid
c)
Nucleic Acid
d)
Protein
26.
Which biomolecule is found in pasta and bread?
a)
Lipid
b)
Protein
c)
Nucleic Acid
d)
Carbohydrate
27.
Which biomolecule is a main source of quick energy?
a)
Nucleic Acid
b)
Protein
c)
Lipid
d)
Carbohydrate
28.
Which biomolecule is found in fats, oils, and waxes and is a source of long-term energy? 
a)
Proteins
b)
Nucleic Acid
c)
Lipids
d)
Carbohydrate
29.
What is the function of a nucleic acid?
a)
Stores genetic information
b)
Stores energy
c)
Quick source of energy
d)
Builds structures
30.
Which biomolecule is made of nucleotides and contain you DNA?
a)
Carbohydrate
b)
Lipids
c)
Protein
d)
Nucleic Acid
31.

Which biomolecule helps form muscles?

a)

Nucleic Acid

b)

Carbohydrate

c)

Protein

d)

Lipids

32.
Which biomolecule is responsible for insulation and energy storage?
a)
Protein
b)
Nucleic Acid
c)
Lipid
d)
Carbohydrate
33.
Which biomolecule has sugars and starches?
a)
Lipids
b)
Proteins
c)
Carbohydrates
d)
Nucleic Acid
34.
What type of molecule is this?
a)
Nucleic acid
b)
Protein
c)
Carbohydrate
d)
Lipid
35.
Any substance that is acted upon by an enzyme is called a(n)?
a)
Coenzyme
b)
Substrate
c)
Vitamin
d)
Polypeptide
36.
Each enzyme only has 1 substrate that will fit its active site.  What is this called?
a)
reusable
b)
catalyst
c)
specific
d)
fragile
37.
Enzymes are capable of increasing the rate of a chemical reaction within a living cell.  Enzymes accomplish this through which of the following means?
a)
reducing the number of products   
b)
reducing the activation energy
c)
increasing the temperature of the cell
d)
increasing the concentration of reactants 
38.
After the enzyme and substrate bind together and perform the reaction, what does the substrate become?
a)
a substrate
b)
an enzyme
c)
a product
d)
an active site
39.
In the diagram, what is letter A? 
a)
product
b)
substrate
c)
enzyme-substrate complex
d)
active site
40.
Letter D...
a)
active site
b)
enzyme
c)
substrate
d)
products
41.
Letter B...
a)
active site
b)
enzyme
c)
substrate
d)
products
42.
Letter C...
a)
active site
b)
enzymes
c)
substrate
d)
products
43.
Letter E...
a)
active site
b)
enzyme
c)
substrate
d)
products
44.

In a chemical reaction, ________ are what you have at the end

a)

Products

b)

Molecules

c)

Reactants

d)

Substances

45.
In a chemical reaction, bonds are broken and new bonds are formed that create new substances. The bonds that are broken are called what?
a)
Reactants
b)
Products
c)
Atoms
d)
Catalysts
46.
Enzymes provide a site where reactants called substrates can be brought together in an enzyme-catalyzed reaction. The site is called the
a)
enzyme substrate complex.
b)
reaction site.
c)
active site.
d)
lock and key.
47.
An enzyme speeds up a reaction by
a)
lowering the activation energy.
b)
raising the activation energy.
c)
releasing energy.
d)
absorbing energy.

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