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Honors Unit 2 Biochemistry Review

Total questions: 68

Worksheet time: 2hrs 31mins

Name
Class
Date
1.
Which biomolecule is this a picture of?
a)
Protein
b)
Nucleic Acid
c)
Lipid
d)
Carbohydrate
2.
Which biomolecule is this a picture of? (Hint: it is made of amino acids)
a)
Proteins
b)
Nucleic Acids
c)
Lipids
d)
Carbohydrates
3.
Which biomolecule is responsible for insulation and LONG term energy storage?
a)
Proteins
b)
Nucleic Acids
c)
Lipids
d)
Carbohydrates
4.
Which biomolecule includes sugars and starches? (Hint: simple or complex)
a)
Lipids
b)
Proteins
c)
Carbohydrates
d)
Nucleic Acids
5.
Which biomolecule group includes fats, oils, and waxes?
a)
Proteins
b)
Nucleic Acid
c)
Lipids
d)
Carbohydrate
6.
The monomer (building block) of a nucleic acid is
a)
Monosaccharide
b)
Amino Acid
c)
Nucleotide
d)
Polysaccharide
7.
Monomers combine to form ________ through the process of ________.
a)
polymers; hydrolysis
b)
polymers; dehydration synthesis
c)
monomers; hydrolysis
d)
monomers; dehydration synthesis
8.
ALL polymers (large molecules) are made up of...
a)
monosaccharides
b)
monomers
c)
proteins
d)
None of these
9.

Polymer's split apart to form ________, by __________.

a)

monomers, hydrolysis

b)

monomers, dehydration synthesis

c)

amino acids, hydrolysis

d)

amino acids, dehydration synthesis

10.
Which 2 molecules contains the elements C-H-O and function pertains to energy?
a)
Lipids and Protein
b)
Carbohydrates and Nucleic Acids
c)
Protein and Carbohydrates
d)
Carbohydrates and Lipids
11.
Carbohydrates are made of... 
a)
C H O
b)
C H O N
c)
C H O N P
d)
C H O N S
12.
Proteins are composed of what smaller building blocks?
a)
amino acids
b)
nucleic acids
c)
fatty acids
d)
nucleotides
13.
Which group of organic molecules serve as long-term energy storage and make the cell membrane is?
a)
proteins
b)
carbohydrates
c)
lipids
d)
nucleic acids
14.
True of False. Glycogen is a starch that is found in animals. 
a)
True
b)
False
15.

In the graph, the energy level needs to increase before it goes back down. The increase is called the:

a)

enzyme energy

b)

substrate

c)

activation energy

d)

active site

16.

What is shown?

a)

Increasing the temperature does not affect the rate of the reaction.

b)

Increasing the temperature increases the rate of reaction until too high a temperature is reached.

c)

Increasing the reaction rate will cause a change in the temperature.

17.

In the figure, why doesn't the reaction rate continue to increase as the temperature increases?

a)

It does.

b)

It reaches the saturation point where no active site is bonded to the activation energy.

c)

At too high of a temperature, the protein changes shape and can no longer function.

18.

A substrate in an enzyme catalyzed reaction is also called

a)

an active site.

b)

activation energy.

c)

the reactant.

d)

the product.

19.

Letter D...

a)

active site

b)

enzyme

c)

substrate

d)

products

20.
What is the name of this molecule?
a)
amino acid
b)
nucleotide
c)
monosaccharide
d)
triglyceride
21.

Letter C...

a)

active site

b)

enzyme

c)

substrate

d)

products

22.
Which biomolecule is also known as enzymes?
a)
Carbohydrate
b)
Lipid
c)
Nucleic Acid
d)
Protein
23.
Which biomolecule contain your genetics?
a)
Carbohydrate
b)
Lipid
c)
Nucleic Acid
d)
Protein
24.
The conditions for an enzyme to work need to be ____________
a)
specific
b)
normal
c)
variable
d)
don't matter
25.
If you want a reaction to speed up you need an _________.
a)
nucleic acid
b)
enzyme
c)
nerve cell
d)
carbohydrate
26.
What is the function of a nucleic acid?
a)
Stores genetic information
b)
Stores energy
c)
Quick source of energy
d)
Builds structures
27.
The process that builds molecules by removing water to bind them together is
a)
Hydrolysis
b)
Protein Synthesis
c)
Dehydration Synthesis
d)
Lysis
28.
Identify the biomolecule
a)
monosaccharide
b)
disaccharide
c)
polysaccharide
d)
glycogen
29.
The chemical reaction that breaks down a molecule by adding water is
a)
Dehydration Synthesis
b)
Hydrophobia
c)
Hydrolysis
d)
Dehydration
30.
Identify this biomolecule.
a)
Carbohydrate
b)
Lipid
c)
Protein
d)
Nucleic acid
31.

The prefix "mono" means...

a)

Two

b)

One

c)

Many

d)

Few

32.

The prefix "poly" means...

a)

One

b)

Two

c)

Many

d)

Want a cracker

33.
If an enzyme becomes over heated what effect, if any, will the heat have on the enzymatic activity? 
a)
The enzyme will not store much chemical energy.
b)
The enzyme will be denatured and cannot catalyze reactions.
c)
The enzyme will lose its net electrical charge.
d)
The enzyme will lose stored genetic information.
34.
Which organic macromolecules are composed of chains of amino acids that join to form the structural components of organisms.
a)
Carbohydrates
b)
Proteins
c)
Amino Acids
d)
Lipids
35.
This molecule is a
a)
carbohydrate
b)
nucleic acid
c)
protein
d)
lipid
36.
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, what is the dependent variable?
a)
Type of plant
b)
Water, apple juice, milk
c)
Plant growth
37.
A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. The dependent variable is the _____.
a)
Diameter of the ball
b)
Force acting on the ball
c)
Height that the ball bounces
d)
Height from which the ball is dropped
38.
Saturated fats have this type of structure:
a)
kinky with double bonds between carbons
b)
4-fused carbon rings
c)
straight with single carbon bonds
d)
rectangular with triple carbon bonds
39.
Why are lipids efficient for energy storage?
a)
they are short chains of nitrogen and oxygen.
b)
they are medium chains of hydrogen and oxygen.
c)
They are long chains of carbon and hydrogen.
40.
How many sugar units make up monosaccharides?
a)
one
b)
two
c)
three
d)
zero
41.
How many sugar units make up disaccharides?
a)
one
b)
two
c)
three
d)
zero
42.
How many sugar units make up polysaccharides?
a)
one
b)
two
c)
more than two
d)
zero
43.

Which of these are examples of polysaccharides?

a)

DNA, RNA

b)

Fats, hormones

c)

polypeptides

d)

starches, cellulose, glycogen

44.
The equations below represent two biochemical processes, A and B. 
Equations
(A) glucose + glucose --> maltose + water
(B) amino acid + amino acid --> dipeptide + water

Which statement about processes A and B is correct?
a)
Processes A and B are examples of dehydration synthesis.
b)
Process A is an example of hydrolysis,  but process B is an example of dehydration synthesis.
c)
Process B requires enzymes, but process A does not.
d)
Processes A and B are examples of hydrolysis.
45.
The following equation represents the digestion of a protein.
Peptide + Water  --->  Amino acid + Amino Acid 
What type of reaction does this demonstrate?
a)
dehydration synthesis
b)
combustion
c)
hydrolysis
d)
single replacement
46.
Which of the following best describes the diagram?
a)
protein synthesis
b)
dehydration synthesis
c)
aerobic respiration
d)
hydrolysis
47.
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 .
48.
Based on the graph, what is the optimal temperature for this enzyme? 
a)
15oC
b)
40oC
c)
30oC
d)
35oC
49.
Which question were the scientists trying to answer with this experiment?
a)
Where do cells come from?
b)
What came first the chicken or the egg?
c)
How are biomolecules formed?
d)
What gave rise to the Eukaryotic cell?
50.
This experiment was conducted by the scientists:
a)
Stanley Miller and Harold Urey
b)
Harold Urey and Albert Einstine
c)
Harrison Ford and Denzel Washington
d)
James Watson and Francis Crick
51.
The apparatus in the experiment was used to mimic what?
a)
proteins
b)
Earth's present conditions
c)
early Earth's conditions
d)
they didn't mean to mimic anything in particular
52.
The gas in the apparatus mimicked? 
a)
space
b)
time
c)
stars
d)
atmosphere
53.
The electrical sparks mimicked?
a)
heat waves
b)
lightening
c)
volcano
d)
hurricane
54.
What was the result of the Miller-Urey Experiment?
a)
amino acids
b)
nucleotides
c)
lipids
d)
glucose
55.
This picture shows what type of lipid?
a)
unsaturated fat
b)
wax
c)
saturated fat
d)
steroid
56.
A "kinky structure" due to the double bonds between carbon atoms creates a lipid known as what?
a)
saturated fat
b)
wax
c)
steroid
d)
unsaturated fat
57.
Which type of molecule is shown?
a)
Saturated Fat acid
b)
Monounsaturated Fatty acid
c)
Polyunsaturated Fatty acid
d)
Cholesterol
58.

A hydrocarbon chain that is sometimes considered to be a monomer of lipids.

a)

Fatty Acids

b)

Nucleic Acids

c)

Proteins

d)

Lipids

59.

Single bond between Carbon and Hydrogen chains.

Tends to be solid at room temperature like butter.

a)

Saturated Fats

b)

Unsaturated Fats

c)

Carbohydrates

d)

Proteins

60.

Double bond between Carbon and Hydrogen chains.

Tends to be liquid at room temperature like oils.

a)

Polysaccharides

b)

Lipids

c)

Saturated Fats

d)

Unsaturated Fats

61.
What is a triglyceride?
a)
a glycerol joined to 3 fatty acids
b)
a glycogen joined to 2 fatty acids
c)
4-fused carbon rings
d)
long chains of hydrocarbons and an alcohol.
62.
Lipids are found in every cell on Earth. Which part of the cell do lipids make up?
a)
cell nucleus
b)
cell vacuole
c)
cell membrane
d)
cell golgi body
63.

The indicator for glucose, simple sugar

a)

iodine

b)

biuret's

c)

benedict's + heat

d)

indophenol

e)

silver nitrate

64.

The indicator for starch, complex sugars

a)

iodine

b)

biuret's

c)

benedict's + heat

d)

indophenol

e)

silver nitrate

65.

The indicator for protein

a)

iodine

b)

biuret's

c)

benedict's + heat

d)

indophenol

e)

silver nitrate

66.

The result of a positive test for glucose, simple sugar

a)

light purple

b)

black/purple

c)

orange when heated

d)

clear

e)

white precipitate

67.

The result of a positive test for protein

a)

light purple

b)

black/dark purple

c)

orange when heated

d)

clear

e)

white precipitate

68.

The result of a positive test for starch, complex sugar

a)

light purple

b)

black/dark purple

c)

orange when heated

d)

clear

e)

white precipitate

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