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Macromolecules

Total questions: 178

Worksheet time: 3hrs 48mins

Name
Class
Date
1.

True or False?

Macromolecules are tiny molecules that cells need.

a)

True

b)

False

2.

A carbohydrate is a macromolecule that is used to...

a)

give cells/systems energy.

b)

build cell parts.

c)

give cells/systems long term energy storage.

d)

help cells with chemical processes.

3.

When reading the ingredients on a nutrition facts label carbohydrates are written as a type of

a)

food additive

b)

enzyme

c)

sugar

d)

protein

4.

Starch is...

a)

a protein

b)

a carbohydrate

c)

a lipid

5.

Example(s) of Lipids are...

a)

Sugar

b)

Olive Oil

c)

Butter

d)

Bread

6.

When reading the nutrition facts on food packaging total fats is a measure of...

a)

Carbohydrate

b)

Lipids

c)

Water

d)

Protein

7.

A lipid is a macromolecule that is used to...

a)

give cells/systems energy.

b)

build cell parts.

c)

give cells/systems long term energy storage.

d)

help cells with chemical processes.

8.

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

a)
b)
c)
d)
9.

Which macromolecule is used as our main source of energy?

a)

Lipids/Fats

b)

Nucleic Acids

c)

Proteins

d)

Carbohydrates

10.

Which macromolecule stores energy?

a)

Carbohydrates

b)

Proteins

c)

Lipids/Fats

d)

Nucleic Acids

11.

This is one job proteins do not have in the body.

a)

structure for tissues and organs

b)

transport things through cell membranes

c)

speed up chemical reactions

d)

insulation

12.

This macromolecule breaks down into sugars such as glucose.

a)

Lipids/Fats

b)

Nucleic Acids

c)

Protein

d)

Carbohydrates

13.

Salmon is an example of what 2 macromolecules?

a)

Carbohydrates

b)

Lipids/Fats

c)

Protein

d)

Nucleic Acids

14.

Match the following

a)
1.

carbohydrate

b)
2.

lipid

c)
3.

protein

15.

Match the MACROMOLECULES and their MONOMERS.

Hint: Monomer = a single unit

a)

carbohydrate

1.

monosaccharide

b)

lipid

2.

fatty acid & glycerol

c)

protein

3.

amino acid

d)

nucleic acid

4.

nucleotide

16.

An enzyme is a ______________.

a)

carbohydrate

b)

lipid

c)

nucleic acid

d)

protein

17.

This macromolecule provides structural support and act as enzymes to catalyze metabolic reactions

a)

carbohydrate

b)

lipids

c)

protein

d)

nucleic acid

18.

Which statement is true?

a)

Simple sugars are made of polysaccharides.

b)

Glycerol is made of fatty acids.

c)

RNA molecules are made of nucleotides.

d)

Amino acids are made of proteins.

19.
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
20.
Lipids are made of... 
a)
C H O
b)
C H O N
c)
C H O N P
d)
C H O N S
21.
Proteins are made of... 
a)
C H O
b)
C H O N
c)
C H O N P
d)
C H O N S
22.

What macromolecule is shown?

a)

Protein

b)

Nucleic Acid

c)

Carbohydrate

d)

Lipid

23.

What macromolecule is shown?

a)

Nucleic Acids

b)

Lipids

c)

Proteins

d)

Carbohydrates

24.

What macromolecule is shown?

a)

Carbohydrate

b)

Nucleic Acid

c)

Protein

d)

Lipid

25.

What macromolecule is shown?

a)

Carbohydrates

b)

Lipids

c)

Nucleic Acids

d)

Proteins

26.

What macromolecule is shown?

a)

Lipids

b)

Proteins

c)

Carbohydrates

d)

Nucleic Acids

27.

What macromolecule is shown?

a)

Proteins

b)

Nucleic Acids

c)

Lipids

d)

Carbohydrates

28.
Which is an example of a lipid
a)
fat
b)
starch
c)
glucose
d)
hemoglobin
29.
Glycerol and fatty acids combine to form...?
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
30.
Glucose (sugar) is an example of a
a)
Carbohydrate
b)
Lipid
c)
Protein
d)
Nucleic Acid
31.
Which subunits make up the structure of all proteins?
a)
glucose
b)
amino acids
c)
carbohydrates
d)
fatty acids
32.
Which is a Carbohydrate's monomer?
a)
Sugar
b)
Amino acids
c)
Monosacharide
d)
Nucleotide
33.
Carbon, Hydrogen, Oxygen and Nitrogen are elements in what biomolecule?
a)
Carbohydrate
b)
Lipid
c)
Protein
d)
Nucleic acid
34.
I am responsible for long term energy storage in mammals.
a)
Protein
b)
Lipid
c)
Carbohydrate
d)
Nucleic Acid
35.
The word saccharide means:
a)
sugar
b)
glucose
c)
sweetener
d)
carbohydrate
36.
The best definition of "organic" in Biology would be:
a)
 to be "fresh"
b)
to be alive
c)
to be chemical-free
d)
to contain Carbon and Hydrogen
37.
Which is NOT a monomer?
a)
sucrose
b)
glucose
c)
amino acid
d)
fatty acid
38.
Important to the structural integrity of plant cells, this is the single most popular polysaccharide in the world.
a)
Starch
b)
Glycogen
c)
Cellulose
d)
Chitin
39.
Enzymes will make a reaction go _______ and use ______ energy.
a)
faster, less
b)
faster, more
c)
slower, less
d)
slower, more
40.
This is the area on an enzyme that the substrate attaches.
a)
active site
b)
product
c)
catalytic region
d)
reactant site
41.
Which factor denatures a enzyme?
a)
Excessive heat
b)
Nothing can
c)
Exposure to light
d)
Exposure to bacteria
42.
The "lock and key hypothesis" attempts to explain the mechanism of?
a)
Vacuole formation
b)
Pinocytosis
c)
Sharing of electrons
d)
Enzyme are specific to a substrate
43.
Any substance that is acted upon by an enzyme is called a(n)?
a)
Coenzyme
b)
Substrate
c)
Vitamin
d)
Polypeptide
44.
Which line represents an enzyme-catalyzed reaction? 
a)
Line 1
b)
Line 2
45.
In a chemical reaction, a reactant binds to an enzyme at a region known as the
a)
catalyst.
b)
product.
c)
substrate.
d)
active site. 
46.
Which of the following is an INCORRECT match of the carbohydrate with its function?
a)
sugar transport in plants--disaccharides
b)
energy storage in plants--starches
c)
energy storage in plants--lactose
d)
sugar transport in humans--glucose
47.
The diagram shows the structure of an amino acid. Which type of molecule is formed from amino acids?
a)
lipids
b)
proteins
c)
carbohydrates
d)
nucleic acids
48.
The diagram shows the general structure of an amino acid. Which type of molecule is formed from amino acids?
a)
lipids
b)
proteins
c)
carbohydrates
d)
nucleic acids
49.
You are analyzing a compound in the laboratory. You find that it is made up of carbon, hydrogen, and oxygen in a ratio of two hydrogen atoms for each carbon atom. How will you classify the compound?
a)
lipid
b)
protein
c)
carbohydrate
d)
nucleic acid
50.
Fats, oils and cholesterol are all types of what?
a)
cell membranes
b)
hormones
hormones
c)
lipids
d)
fatty acids
51.
RNA and DNA are which type of macromolecules?
a)
carbohydrate
b)
lipid
c)
nucleic acid
d)
protein
52.
Many plants have waxy coatings on some surfaces. This coating reduces water loss because it is not water-permeable. This waxy coating is which of the following types of organic molecule?
a)
protein
b)
carbohydrate
c)
nucleic acid
d)
 lipid
53.
A sugar, a phosphate group, and a nitrogen base form the building blocks of which organic compound?
a)
carbohydrates
b)
lipids
c)
nucleic acids
d)
proteins
54.
The human body maintains a temperature of around 98.6 degrees at all times. Enzymes are involved in almost every chemical reaction in the body. Which of the following describes the connection between these two statements? 
a)
Enzymes function best at a specific temperature.
b)
The body needs to be warm to prevent hypothermia.
c)
The body is kept relatively warm to prevent too much enzyme action. 
d)
There is no connection between the two statements. 
55.
Like complex carbohydrates, proteins are macromolecules that serve many functions and can be chemically broken down and restructured. Both proteins and complex carbohydrates are which of the following?
a)
 polymers of smaller subunits
b)
sequence of sugars
c)
lipids of large molecules
d)
nucleotides of DNA
56.
 In living organisms, lipids function mainly as:
a)
Sources of stored energy and transmitters of genetic information
b)
Sources of stored energy and components of cellular membranes
c)
Transmitters of genetic information and catalysts of chemical reactions
d)
Catalysts of chemical reactions and components of cellular membranes
57.
What is the function of macromolecule subunit below?
a)
energy
b)
catalyst
c)
stores genetic information
d)
composes the majority of the cell membrane
58.
What atoms make up all carbohydrates?
a)
Carbon, Sulfur, Hydrogen
b)
Carbon, Oxygen, Phosphorus
c)
Carbon, Oxygen, Nitrogen
d)
Carbon, Oxygen, Hydrogen
59.
How many sugar units make up monosaccharides?
a)
one
b)
two
c)
three
d)
zero
60.
How many sugar units make up disaccharides?
a)
one
b)
two
c)
three
d)
zero
61.
How many sugar units make up polysaccharides?
a)
one
b)
two
c)
more than two
d)
zero
62.
Which do all carbohydrates do for us?
a)
provide energy
b)
make muscle
c)
make brains
d)
make hair
63.
What molecule is this
a)
sucrose
b)
protein
c)
glucose
d)
cellulose
64.
What type of carbohydrate is this?
a)
polysaccharide
b)
disaccharide
c)
monosaccharide
d)
it isn't a carbohydrate
65.
All carbohydrate names end with which ending:
a)
ise
b)
ase
c)
ese
d)
ose
66.
These are all properties of a disaccharide EXCEPT:
a)
made up of two sugars
b)
sucrose
c)
2 monosaccharides joined by dehydration synthesis
d)
ratio of 1:2:1
67.
Which of these are examples of carbohydrates?
a)
DNA, RNA
b)
Fats, hormones
c)
amino acids
d)
starches, glucose, chitin
68.

What is the monomer of carbohydrates

a)

disaccharides

b)

monosaccharides

c)

amino acids

d)

fatty acids

69.

Which of the following is NOT a monosaccharide?

a)

starch

b)

fructose

c)

glucose

d)

galactose

70.

Which polysaccharide is used by plants to store glucose?

a)

glycogen

b)

cellulose

c)

starch

d)

chitin

71.

Lactose is composed of

a)

glucose + fructose

b)

glucose + glucose

c)

glucose + sucrose

d)

glucose + galactose

72.

What is the polysaccharide used by animals to store glucose?

a)

glycogen

b)

fructose

c)

starch

d)

cellulose

73.

Which polysaccharide is used by plants to make their cell wall?

a)

starch

b)

glycogen

c)

cellulose

d)

chitin

74.

What makes up the disaccharide sucrose?

a)

glucose + glucose

b)

glucose + fructose

c)

glucose + galactose

d)

glucose + maltose

75.
Carbohydrates are comprised of Carbon, Hydrogen, Oxygen, and Nitrogen
a)
True
b)
False
76.
Sugars all end with what three letter ending?
a)
-ote
b)
-ate
c)
-ase
d)
-ose
77.
What type of carbohydrate is this?
a)
polysaccharide
b)
disaccharide
c)
monosaccharide
d)
it isn't a carbohydrate
78.
The scientific name for table sugar is ___
a)
lactose
b)
sucrose
c)
galactose
d)
glucose
79.
What type of carbohydrate is this?
a)
polysaccharide
b)
disaccharide
c)
monosaccharide
d)
it isn't a carbohydrate
80.
Carbohydrates are the first source of _______ for the body?
a)
repair
b)
hygiene
c)
fuel
81.
The simple sugar from fruit is called_____.
a)
sucrose
b)
lactose
c)
fructose
d)
maltose
82.
The simple sugar in milk is ________.
a)
lactose
b)
maltose
c)
sucrose
d)
fructose
83.
______________ carbohydrates supply longer lasting energy.
a)
simple
b)
complex
c)
generic
84.
What might happen if you didn't get enough carbohydrates?
a)
Your body wouldn't be able to build muscle mass
b)
Your body wouldn't have enough energy to function
c)
You would develop serious vitamin deficiencies
d)
Your bones and teeth would become weaker
85.
Your body breaks down most complex carbohydrates into:
a)
fructose
b)
sucrose
c)
glucose
d)
starch
86.
What atoms make up all carbohydrates?
a)
Carbon, Sulfur, Hydrogen
b)
Carbon, Oxygen, Phosphorus
c)
Carbon, Oxygen, Nitrogen
d)
Carbon, Oxygen, Hydrogen
87.
How many sugar units make up monosaccharides?
a)
one
b)
two
c)
three
d)
zero
88.

What is the role of mRNA

a)

Carry an amino acid to the ribosome

b)

Copy the instructions from DNA and carry it out of the nucleus

c)

Make up the ribosomes

89.

What is the mRNA for the following DNA strand?

TAC GTA

a)

GCT AGC

b)

ATG CAT

c)

AUG CAU

90.

What is the end product of translation?

a)

mRNA that can leave the nucleus

b)

Amino acid chain

c)

monosaccharide chain

d)

Anticodon

91.
The information about an organism’s heredity is stored in its DNA. DNA is located in the cell’s _____________________. 
a)
mitochondria
b)
lysosomes
c)
nucleus
92.
·  Copying and carrying the genetic code is the responsibility of which molecule?
a)
RNA
b)
Glucose
c)
Oxygen
93.
The base Uracil is only found in which molecule?
a)
DNA
b)
RNA
c)
Carbohydrates
94.
DNA never leaves the nucleus
a)
True
b)
False
95.
Proteins are made of which molecule?
a)
Amino Acids
b)
Lipids
c)
Carbohydrates
96.
What does transcription mean?
a)
To make a copy
b)
To erase
c)
To run away
97.
DNA is a double helix.
a)
True
b)
False
98.
RNA is a double helix
a)
True
b)
False
99.
Muscles are made of proteins.
a)
True
b)
False
100.
An organism's DNA is a code to make proteins.
a)
True
b)
False
101.

Match the following

a)
1.

Carbohydrate structure

b)
2.

Lipid structure

c)

Monosaccharide

3.

Carbohydrate monomer

d)

Fatty acids

4.

Lipid monomer

102.

Match the following

a)
1.

Monosaccharide

b)
2.

Disaccharide

c)
3.

Polysaccharide

103.

It is the main source of energy which made up of carbon, hydrogen, and oxygen.

a)

Lipids

b)

Biomolecules

c)

Carbohydrates

d)

Sugar

104.

Also known as simple sugar.

a)

Disaccharides

b)

Monosaccharides

c)

Polysaccharides

d)

Carbohydrates

105.

They consist of two monosaccharides bonded together.

a)

Monosaccharides

b)

Polysaccharides

c)

Disaccharides

d)

Sugar

106.

They consist of multiple sugars.

a)

Carbohydrates

b)

Monosaccharides

c)

Polysaccharides

d)

Disaccharides

107.

Among the following, what is NOT lipids?

a)

Butter

b)

Rice

c)

Cheese

d)

Olive Oil

108.

Carbohydrates are?

a)

Fats

b)

Sugars

109.

Many carbohydrates end with?

a)

-ose

b)

-ace

c)

-oak

d)

-tic

110.

This molecule is for long-term energy.

a)

Carbohydrates

b)

Lipids

111.

Food examples of this molecule include pastas, sugars, and rice.

a)

Carbohydrate

b)

Lipid

c)

Water

112.

The main job of carbohydrates is

a)

Weight gain

b)

Main energy source

c)

Genetic material

d)

Muscle development

113.

The main job of lipids is

a)

Short term energy storage

b)

Long term energy storage

c)

Genetic material

d)

DNA

114.
Which biomolecule is responsible for insulation and energy storage?
a)
Protein
b)
Nucleic Acid
c)
Lipid
d)
Carbohydrate
115.

What is the function of carbohydrates?

a)

provides quick energy

b)

stores energy

c)

helps with growth and repair of tissues

d)

stores genetic information

116.

Fats and oils: a major source of food providing long term energy and other functions.

a)

Sugars

b)

Carbohydrates

c)

Lipids

d)

Proteins

117.
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
118.

What is the function of lipids?

(a)  

119.

What elements are lipids composed of?

a)

nitrogen

b)

hydrogen

c)

oxygen

d)

carbon

120.

Outline the structure of a lipid subunit.

a)

Fat subunits are long and skinny.

b)

Fat subunits are composed of glycerol and a fatty acid.

c)

Fat is the subunit of a lipid.

d)

Fat subunits are composed of hydrogen and carbon.

121.

What is the result of dehydration synthesis between three fatty acids and a glycerol?

a)

Palmitic Acid

b)

Trans Fats

c)

Triglyceride

d)

Water

122.

Fats are

a)

Non-polar

b)

Polar

c)

Hydrophilic

d)

Hydrophobic

123.

Which of the following bonds can NOT be found in saturated fats?

a)

C-C

b)

H-C

c)

C=C

d)

C-O

124.

Which of the following bonds can be found in unsaturated fats?

a)

N-O

b)

C=C

c)

H-H

d)

N-N

125.

Are phospholipids hydrophobic or hydrophilic?

a)

Hydrophobic

b)

Both

c)

Hydrophilic

d)

Neither

126.

Which of the following statements regarding lipids is most accurate?

a)

Lipids are synthesized by ribosomes.

b)

The empirical formula for lipids is typically C1H2O1.

c)

Saturated fats tend to be liquid at room temperature due to hydrogen bonding.

d)

Polyunsaturated fats tend to be liquid at room temperature due to numerous double bonds in the hydrocarbon chains.

127.

Explain why phospholipids are important to the function of cells.

4 lines
128.

Which elements can be found in proteins?

a)

C

b)

H

c)

N

d)

P

e)

O

129.

What is the monomer or building block of proteins?

a)

glucose

b)

nucleotides

c)

amino acids

d)

lipids

130.

How are proteins built?

a)

remove water

b)

add water

c)

make a bond

d)

hydrolysis

131.

What is another name for a protein?

a)

fat

b)

sugar

c)

amino acid

d)

polypeptide

132.

What holds amino acids together?

a)

hydrogen bonds

b)

peptide bonds

c)

ionic bonds

d)

james boonds

133.

Enzymes

a)

fats

b)

proteins

c)

catalysts

d)

dogalysts

e)

lower activation energy

134.

What can make an enzyme not work?

a)

changing the pH

b)

change the shape

c)

changing the temperature

d)

change the size

135.

Pick the protein:

a)

sucrose

b)

keratin

c)

glucose

d)

starch

e)

cheese

136.

Pick the protein:

a)

bread

b)

hair

c)

oil

d)

orange juice

e)

butter

137.

Insulin is produced by the _________ in the ____________.

a)

alpha cells, pancreas

b)

beta cells, pancreas

c)

alpha cells, liver

d)

beta cells, liver

138.

Insulin moves blood glucose primarily into _____________ cells to be used as energy.

a)

islet (of Langerhans)

b)

fat

c)

muscle

d)

liver

139.

Insulin moves excess blood glucose into ___________ cells for storage.

a)

islet (of Langerhans)

b)

fat

c)

muscle

d)

liver

140.

Insulin signals _________ cells to store glucose as glycogen.

a)

islet (of Langerhans)

b)

fat

c)

muscle

d)

liver

141.

Which organ produces insulin?

(a)  

142.

Insulin causes which organ to remove glucose from the blood?

a)

liver

b)

pancreas

c)

brain

d)

kidneys

143.

What happens to the amount of insulin released if the blood glucose levels get low?

a)

lots more is produced

b)

nothing - low blood glucose has no effect on insulin levels

c)

less / no insulin is produced

144.
What happens if glucose levels fall?
a)
Insulin levels rise
b)
glucagon levels rise
c)
glucagon levels drop
d)
glycogen levels rise
145.

According to the feedback loop, what does high blood sugar promote?

a)

Insulin Release

b)

Glucagon Release

c)

Insulin Uptake

d)

Glycogen Uptake

146.

What is the difference between what will happen if their is too much Glucose or too little Glucose? SELECT ALL THAT APPLY

a)

With too much Glucose, Insulin is released. With too little Glucose, Glucagon is released.

b)

With too much Glucose, the pancreas produces insulin. With too little Glucose, the pancreas produces glucagon.

c)

With too much Glucose, Glucagon is released. With too little Glucose, Insulin is released.

d)

There is no difference.

147.
Name the levels of organization in the human body in order from smallest to largest:
a)
Tissue, organ, organ system
b)
Organ system, tissue, organs, cells
c)
Cells, tissue, organs, organ system
d)
Cells , organs, tissue, organ system
148.

When your glucose levels are too high, what is the appropriate response?

a)

urinate

b)

release glucagon

c)

eat sugar

d)

release insulin

149.

Which of the following correctly pairs the hormone and the response that it causes

a)

Glucagon - makes body cells take in glucose

b)

Insulin - makes body cells take in glucose

c)

Pancreas - makes liver release stored glucagon

d)

Liver - makes pancreas take in stored insulin

150.

Glucagon causes muscles and the liver to release _____ back into the bloodstream

a)

glucose

b)

glucagon

c)

glycogen

d)

insulin

151.

Which hormone is released when blood sugar gets too low?

a)

glucose

b)

glucagon

c)

glycogen

d)

insulin

152.

Which hormone is released when blood sugar gets too high?

a)

glucose

b)

glucagon

c)

glycogen

d)

insulin

153.

which organ will balance the glucose level in the blood by releasing hormones like insulin or glucagon?

a)

Stomach

b)

Small intensine

c)

large intestine

d)

Pancreas

154.

What is the point of a feedback loop?

a)

To provide the body with more energy

b)

To provide the body with more food

c)

To make sure the conditions in the body are always changing

d)

To make sure the conditions in the body remain stable

155.

Match the following

a)

Glucose

1.

Monosccharide

b)

Starch

2.

Polysaccharide

c)

Lactose

3.

Disaccharide

156.

Glucose is changed into​ (a)   and stored in the​ ​ (b)  

Choose from the below words
glycogen
liver
glucagon
pancreas
insulin
157.

All carbs are converted to ________

a)

sucrose

b)

glucose

c)

galactose

d)

glycogen

158.

What sugar does DNA have in its backbone?

a)

Ribose

b)

Deoxyribose

c)

Glucose

d)

Fructose

159.

What sugar does RNA have in its backbone?

a)

Ribose

b)

Deoxyribose

c)

Glucose

d)

Fructose

160.

Which nucleic acid is double-stranded?

a)

DNA

b)

RNA

161.

Which nucleic acid is single-stranded?

a)

DNA

b)

RNA

162.

Which combination of nucleotides does RNA have?

a)

A, C, U, and T

b)

G, U, A, T

c)

A, C, G, T

d)

A, C, G, U

163.

What combination of nucleotides does DNA have?

a)

A, C, U, and T

b)

G, U, A, T

c)

A, C, G, and T

d)

A, C, G, and U

164.

What make the backbone of DNA? Check all that apply.

a)

Deoxyribose

b)

Ribose

c)

Phosphate Groups

d)

Nitrogenous Base

165.

What makes the backbone of RNA?

a)

Deoxyribose

b)

Ribose

c)

Phosphate Groups

d)

Nitrogenous Base

166.

Which molecule can only ever be found in the nucleus?

a)

RNA

b)

DNA

c)

Protein

d)

Water

167.

Which molecule exits the nucleus after being made?

a)

RNA

b)

DNA

c)

Water

d)

Energy

168.

The images Rosalind Franklin captured help determine that DNA was a double helix. What method did she use?

a)

X-ray crystallography

b)

Karyotyping

c)

Electricity

d)

DNA fingerprinting

169.

A nucleotide consists of what 3 components?

a)

Sugar

b)

Phosphate Group

c)

Nitrogenous Base

d)

Hydrochloric Acid

170.

What is the purpose of DNA?

a)

To insulate against the cold

b)

To make reactions happen quickly

c)

To store and transmit genes

d)

Structural Support

171.

What shape is DNA?

a)

A single helix

b)

A crstyal

c)

A double helix

d)

Primary Structure

172.

Which molecules help to replicate DNA and build RNA?

a)

Acids & Bases

b)

Enzymes

c)

Carbohydrates

d)

Lipids

173.

Which nitrogenous base does Thymine always pair with?

a)

Cytosine

b)

Guanine

c)

Adenine

d)

Uracil

174.

What nitrogenous base does Uracil always pair with?

a)

Cytosine

b)

Guanine

c)

Adenine

d)

Thymine

175.

A scientist analyzes a DNA molecule and discovers that 25% of its nitrogenous bases are Cytosine. How many bases must be Guanine?

a)

0% Guanine

b)

25% Guanine

c)

50% Guanine

d)

75% Guanine

176.

DNA Polymerase, Helicase, and Ligase are all examples of which type of molecule?

a)

Carbohydrates

b)

Nucleic Acids

c)

Lipids

d)

Enzymes

177.

After replication, what is a DNA molecule made out of?

(The Semi-Conservative Model.)

a)

Two new strands

b)

Two old strands

c)

One old strand and one new strand.

178.

Your body is using your DNA to make a piece of RNA (transcription). If the DNA code is TAAAG, then what will the matching RNA code be?

a)

TAAAG

b)

ATTTC

c)

AUUUC

d)

UTTTC

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