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BioMolecules Test review

Total questions: 92

Worksheet time: 1hrs 22mins

Name
Class
Date
1.

2. Which biomolecules contains your genetic information?

a)

Proteins

b)

Lipids

c)

Carbohydrates

d)

Nucleic Acids

2.

9. Amino Acids are the monomers of __________.

a)

Nucleic Acids

b)

Proteins

c)

Carbohydrates

d)

Lipids

3.

6. The monomer of carbohydrates is known as _______.

a)

Amino Acid

b)

Fatty Acid

c)

Nucleotide

d)

Saccharide

4.

What type of biomolecule contains carbon, hydrogen, oxygen, and nitrogen?

a)

carbohydrate

b)

lipid

c)

nucleic acid

d)

protein

5.

Which of the following is a monosaccharide?

a)

Chitin

b)

Sucrose

c)

Starch

d)

Glucose

6.

Cholesterol is a/an...

a)

carbohydrate

b)

lipid

c)

protein

d)

nucleic acid

7.

Enzyme is a/an...

a)

carbohydrate

b)

lipid

c)

protein

d)

nucleic acid

8.

Monosaccharides are the building blocks of which group of biomolecules?

a)

protein

b)

lipid

c)

carbohydrate

d)

nucleic acid

9.

What biomolecule serves as structural materials in hair, nails and connective tissues?

a)

protein

b)

lipid

c)

carbohydrate

d)

nucleic acid

10.

The sugar in RNA is _____________while the sugar in DNA is ________.

a)

deoxyribose, ribose

b)

ribose, deoxyribose

c)

c. ribose, phosphate

d)

ribose, uracil

11.

Which of the following sugars are the components of lactose?

a)

glucose & galactose

b)

fructose and galactose

c)

glucose and glucose

d)

glucose & fructose

12.

Which of the following elements is present in Nucleic acid but not in other biomolecules?

a)

Carbon

b)

Phosphorus

c)

Nitrogen

d)

Hydrogen

13.

7. Glycerol and fatty acids are the monomers of _________.

a)

Lipids

b)

Carbohydrates

c)

Proteins

d)

Nucleic Acids

14.

3. Which biomolecules act as energy storage for the cell and also cushions and insulates organs?

a)

Carbohyrdates

b)

Lipids

c)

Proteins

d)

Nucleic Acids

15.
If we think of DNA as a ladder, which parts are the steps of the ladder?
a)
the nitrogenous base pairs
b)
the phosphate-sugar backbone
c)
the genes
d)
the phospholipid bilayer
16.
Which of the following best describes a DNA molecule?
a)
double helix
b)
contains ribose
c)
made of amino acids
d)
contains Uracil
17.
DNA is a polymer made of:
a)
Nucleotides
b)
Ribosomes
c)
Purines
d)
Pyrimidines
18.
In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of
a)
cytosine
b)
guanine
c)
thymine
d)
uracil
19.
What are the three components of a nucleotide?
a)
sugar, hydrogen, nitrogen base
b)
sugar, oxygen, nitrogen base
c)
sugar, phosphate, nitrogen base
d)
sugar, phosphate, protein
20.

The backbone of a DNA molecule is made from a 5 carbon ______________ and a _______________ group.

a)

lipid, carbon

b)

sugar, phosphate

c)

nitrogen, oxygen

d)

nitrogen, sulfur

21.
The sugar in DNA is ?
a)
sucrose
b)
glucose
c)
deoxyribose
d)
fructose
22.

Label the diagram using vocab words. Number 1

a)

Substrate

b)

Enzyme

c)

Active Site

23.

Label Number 2

a)

Substrate

b)

Enzyme

c)

Active Site

24.

Label number 3

a)

Substrate

b)

Enzyme

c)

Active Site

25.

A substance that initiates or speeds up a chemical reaction and is not permanently changed in the process.

a)

Hydrolysis

b)

Coenzyme

c)

Catalyst

d)

activation energy

26.

Energy needed for a reaction to occur.

a)

Hydrolysis

b)

Coenzyme

c)

Catalyst

d)

Activation Energy

27.

Change the molecular conformation of a protein to destroy its function.

a)

Denature

b)

Coenzyme

c)

Catalyst

d)

Activation Energy

28.

Which of the following elements are found in all macromolecules? (Select all that apply).

a)
b)
c)
d)
29.

Match the following

a)
1.

carbohydrate

b)
2.

lipid

c)
3.

protein

30.
Any substance that is acted upon by an enzyme is called a(n)?
a)
Coenzyme
b)
Substrate
c)
Vitamin
d)
Polypeptide
31.
The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?
a)
Enzymes increase the energy of the reactants.
b)
Enzymes decrease the energy level of the products.
c)
Enzyme decrease the activation energy of the reaction.
d)
Enzymes reverse the direction of the reaction.
32.
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 .
33.
What do monomers do?
a)
Bond to make a polymer
b)
Create essential proteins
c)
Stores energy
d)
Splits to make more cells
34.

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.

35.

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.

36.

Nucleotides are a monomer of which biomolecule?

a)

Nucleic acids

b)

Proteins

c)

Carbohydrates

d)

Lipids

37.
What elements are common to all 4 biomolecules?
a)
Carbon, hydrogen, nitrogen
b)
Carbon, Nitrogen, Phosphorus
c)
Carbon, Hydrogen, Oxygen
d)
Carbon, Hydrogen, Phosphorus
38.
Which biomolecule helps form muscles?
a)
Nucleic Acid
b)
Carbohydrate
c)
Protein
d)
Lipids
39.
Carbon, Hydrogen, Oxygen and Nitrogen are elements in what biomolecule?
a)
Carbohydrate
b)
Lipid
c)
Protein
d)
Nucleic acid
40.

Which biomolecule makes up cell membranes?

a)

Protein

b)

Carbohydrate

c)

Lipid

d)

Nucleic acid

41.
Enzymes catalyze reactions by ___________ Activation Energy.
a)
Increasing
b)
Decreasing
42.
What do disaccharides, such as sucrose, and polysaccharides, such as starch, have in common?
a)
They are lipids made of fatty acids.
b)
They are proteins made of amino acids.
c)
They are nucleic acids made of nucleotides.
d)
They are carbohydrates made of simple sugars.
43.

The complex carbohydrates pictured below are made by linking molecules of glucose.


In all three complex carbohydrates, the subunits of glucose are bonded together differently. Because they have different structures, they most likely —

a)

contain different chemical elements

b)

form different proteins

c)

carry different nucleotides

d)

perform different functions

44.

An advertisement for a health supplement for dogs claims to build lean muscle and strengthen tendons and ligaments, as well as provide energy. Which two biomolecules must the supplement contain to provide these benefits?

a)

Carbohydrates and lipids

b)

Proteins and carbohydrates

c)

Nucleic acids and carbohydrates

d)

Lipids and nucleic acids

45.

Beeswax is a waxy substance that is produced by bees and then harvested by humans for a variety of uses. Ancient Romans used beeswax as a waterproofing agent because it is not water-permeable. Beeswax is which of the following types of organic molecule?

a)

carbohydrate

b)

lipid

c)

nucleic acid

d)

protein

46.

Many land plants store energy in starch. When energy is needed, the starch molecules can be broken down quickly. This chemical reaction produces which of the following?

a)

amino acids

b)

lipids

c)

monosaccharides

d)

RNA chains

47.

Your friend is really irritable while sitting in class. He feels lightheaded and dizzy. He is also feeling a bit of confusion and brain fog.


What inferences are most realistic to make about the biomolecules in your friend's body?

a)

He is running low on fast sources of energy

b)

Proteins are being broken down or reshaped

c)

The coding information in the cell is incorrect or incomplete

d)

There is not enough insulation or energy storage

48.
The process of breaking the bonds within a starch molecule in order to release glucose molecules is called......
a)
Dehydration Synthesis
b)
Hydrolysis
49.

Salivary amylase is an enzyme in humans that breaks down starches. What substance would humans have difficulty digesting without this enzyme?

a)

lipids

b)

nucleic acids

c)

proteins

d)

carbohydrates

50.

Which best explains why the rate of a biochemical reaction decreases at high temperatures?

a)

The activation energy increases.

b)

The shape of the enzyme changes.

c)

The enzyme-substrate complex forms.

d)

The bonds between substrates are broken.

51.

Estella spilled tomato sauce on her shirt. When she washed her shirt, she noticed that the detergent she used contained enzymes. Enzymes are added to detergents to break down proteins from food and other substances that may stain clothing. Which would MOST likely inhibit the ability of the enzymes to remove the stain on her shirt?

a)

the amount of dissolved minerals in the water

b)

the type of fibers from which her shirt was made

c)

the temperature of the water

d)

the fragrances in the detergent

52.

Helena investigates how enzymes are important to body processes. How is the role of enzymes in biochemical activity BEST explained?

a)

Enzymes work at all pH levels.

b)

Enzymes decrease the rate of metabolism.

c)

Enzymes enable reactions to occur at lower temperatures.

d)

Enzymes raise the activation energy needed for a reaction.

53.
Which major macromolecule is being represented in this image? 
a)
carbohydrate
b)
lipid
c)
protein
d)
nucleic acid
54.
Which biomolecule is this a picture of?
a)
Protein
b)
Nucleic Acid
c)
Lipid
d)
Carbohydrate
55.

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.

56.
Letter D in the picture is...
a)
active site
b)
enzyme
c)
substrate
d)
products
57.
The enzyme known as ‘catalase’ is involved in the breakdown of hydrogen peroxide molecules into separate water and oxygen molecules. During this reaction, what happens to the ‘catalase’?
a)
The enzyme would become products: O2 and H20
b)
The enzyme would be fully used up and discarded.
c)
The enzyme would remain unchanged in any way.
d)
The enzyme would become a new type of enzyme.
58.
What is being represented by the letter A in the image?
a)
Substrate
b)
Enzyme
c)
Product
d)
Complex
59.
What is being represented by the letter B in the image?
a)
Active Site
b)
Enzyme
c)
Substrate
d)
Product
60.
The part of the enzyme that the substrate bonds to is called the _____.
a)
active site
b)
activation energy
c)
bond site
d)
dehydration synthesis
61.
Carbon, Hydrogen, Oxygen and Nitrogen are elements in what biomolecule?
a)
Carbohydrate
b)
Lipid
c)
Protein
d)
Nucleic acid
62.

Which of the following represents a lipid?

a)
b)
c)
d)
63.

Which of the following represents a nucleic acid?

a)
b)
c)
d)
64.

Which of the following represents a protein?

a)
b)
c)
d)
65.

Which of the following represents a carbohydrate?

a)
b)
c)
d)
66.

Which organic molecules is paired with its function?

a)

nucleic acid- to store energy

b)

lipids – to regulate metabolic function.

c)

protein- to provide insulation.

d)

carbohydrates – to provide quick-release energy.

67.
DNA is a polymer made of:
a)
Nucleotides
b)
Ribosomes
c)
Purines
d)
Pyrimidines
68.
Name this structure
a)
double helix
b)
nucelotide
c)
twisted ladder
d)
hydrogen bond
69.
Guanine bonds with ______________.
a)
Adenine
b)
Guanine
c)
Cytosine
d)
Thymine
70.

What base pairs with cytosine?

a)

guanine

b)

adenine

c)

thymine

d)

magazine

71.

Study the following graph carefully & answer the questions given below it. Imports of 3 companies over the years (in Rs. Crores). In which of the following years, the imports made by company 'A' were exactly equal to the average import made by it over the given years?

a)

1995

b)

1996

c)

1997

d)

None of the above

72.

What was the difference in the consumption of Copper and steel in 2001?

a)

5000 Tons

b)

500 Tons

c)

50 Tons

d)

5 Tons

73.
This part of the experiment serves as a basis of comparison; the one variable being tested has been omitted. 
a)
experimental group
b)
control group
c)
data
d)
variables
74.
A possible explanation to a problem that has not yet been tested. 
a)
data
b)
theory
c)
hypothesis
d)
fact
75.
This variable in an experiment is the one being deliberately changed by the scientist. 
a)
dependent variable
b)
independent variable
c)
data
d)
control group
76.
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, the independent variable is ...
a)
The type of plant
b)
The amount of sunlight
c)
The type of music
d)
The type of liquid
77.
The summary at the end of an experiment that explains the results. 
a)
conclusion
b)
procedures
c)
materials
d)
responding variable
78.
A student wants to test the effects of type of exercise on heart rate.  What is the dependent variable?
a)
heart rate
b)
type of exercise
c)
amount of exercise
d)
time of day exercise occurs
79.
Observations made during an experiment are called:
a)
data
b)
problems
c)
conclusions
d)
questions
80.
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 are the controlled variables?
a)
Type of plant, amount of music, and sunlight
b)
Water, apple juice, milk
c)
Plant growth
81.

Which is true about hypothesis?

a)

A. It may reject or accepts your prediction.

b)

B. It is an educated guess or possible answer to the question.

c)

C. It summarizes the result on the experiment.

d)

D. It is the final answer to the question.

82.
A scientist performs an experiment to see if acids have an effect on the health of a particular type of plant. Three sets of plants were treated with acidic solutions of known pH while the control set was treated with a solution of neutral pH 7.Which is the best conclusion for this experiment?
a)
Acid has no effect on the health of this type of plant.
b)
B. High acidity is helpful to this type of plant.
c)
C. Low acidity is harmful to this type of plant.
d)
High acidity is harmful to this type of plant.
83.
The graph below shows atmospheric carbon dioxide levels since the year 1880.Which of the following conclusions can be drawn from this graph
a)
 Atmospheric carbon dioxide levels are responsible for global temperature change.
b)
 Atmospheric carbon dioxide levels have been rising at about the same rate for the past century.
c)
Atmospheric carbon dioxide levels have remained the same over the past century.
d)
 Atmospheric carbon dioxide levels have been rising at an increasingly higher rate as the past century has progressed.
84.
In order to be accepted, a scientific theory must be
a)
 widely tested and supported by extensive data
b)
 based on the results of a single experiment
c)
 controversial and cause debate
d)
 in line with all previous historical ideas
85.
An experiment was carried out to determine whether drinking caffeinated soda increases pulse rate. The pulse rates of two groups of people at rest were measured. Group A was then given caffeinated soda and group B was given caffeine-free soda. One hour after drinking the soda, the pulse rates were measured. The participants in the experiment were all the same age, and they were all given the same amount of soda. The dependent variable in this experiment is the
a)
type of soda given to each group
b)
amount of soda given to each group
c)
 pulse rate of each group
d)
age of participants in each group
86.

Christopher set up six tanks with equal volumes of 20 ℃ water. Three of the tanks contained water with a high salt content of 30 parts per thousand and three contained water with no salt. Christopher added an equal amount of green algae to each tank. He allowed the algae to grow in the tanks for two weeks. Then, he measured the amount of algae in each tank. Identify the question that Christopher’s experiment can best answer.

a)

Is the growth of algae affected by the temperature?

b)

Do algae grown in water with a high salt content release more oxygen than an equal amount of algae grown in water without salt?

c)

Do algae grow more in water with high salt content than in water without salt?

87.
Which type of data involves numbers that are obtained by counting or measuring?
a)
quantitative
b)
qualitative
88.
Which type of data involves descriptions that cannot be counted or measured?
a)
qualitative
b)
quantitative
89.
"The plant is pretty"
This observation is...
a)
Subjective
b)
Objective
90.
"The coin weighs 2 grams"
This observation is...
a)
Subjective
b)
Objective
91.
When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. The fact that we kept the light, plant, and water the same in each experiment are examples of ____________.
a)
an dependent variable
b)
an independent variable
c)
a control
d)
constants
92.

Mr. Wells is probably not in school today because his is sick. Is this a Qualitative Observation, Quantitative Observation, or an Inference

a)

Qualitative Observation

b)

Quantitative Observation

c)

Inference

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