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APBio Unit 1 Review

Total questions: 164

Worksheet time: 2hrs 37mins

Name
Class
Date
1.

Why does ice float?

a)

As water freezes, the molecules spread out decreasing its density.

b)

As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy.

c)

As water freezes, air gets trapped making it more dense

d)

As water freezes, it takes up more oxygen from the atmosphere, causing it to be more dense

2.

Water is a universal solvent because it...

a)

It can be found anywhere

b)

It freezes when it gets cold

c)

Floats when frozen

d)

Dissolves more substances than anything else

3.

Which of the following is LEAST likely to dissolve in water?

a)

nonpolar fats and oils

b)

polar sugar molecules

c)

salt made of a positive sodium ion and a negative chloride ion

d)

all of the substances will dissolve easily in water

4.

Why does water move from the roots to the leaves of plants?

a)

Water is pushed by solutes

b)

Capillary action pulls the water molecules up like a chain

c)

Water is pulled by gravity

d)

Water cannot move up roots to leaves

5.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
6.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
7.
What is the only substance with a neutral pH of 7?
a)
Milk
b)
Orange Juice
c)
Water
d)
Blood
8.
Water is essential for life. Its special properties make water the single most important molecule in plant life. Which of the following properties of water enables it to move from the roots to the leaves of plants?
a)
Water expands as it freezes.
b)
Water is an excellent solvent.
c)
Water exhibits cohesive behavior.
d)
Water is able to moderate temperature.
9.
Why does ice stay at the top of oceans instead of sinking to the bottom?
a)
 Ice is colder than liquid water.
b)
Ice is less dense than liquid water.
c)
Ice is more dense than liquid water.
d)
Ice is warmer than liquid water.
10.
A florist places a bouquet of white carnations in water containing blue dye. After a time, the flowers turn blue. What process helped the carnations to change color?
a)
Specific heat 
b)
Surface tension
c)
Cohesion and adhesion of water molecules 
d)
Formation of covalent bonds between hydrogen and oxygen molecules
11.
 Many fish and aquatic plants can survive a cold winter because the layer of ice that forms at the top of the lake insulates the water below and prevents the lake from freezing solid. What unique property of water contributes to this effect? 
a)
Water absorbs heat when it evaporates and forms a gas 
b)
 Water expands and becomes less dense when it freezes.
c)
Water molecules completely separate into ions in solutions.
d)
 Water forms hydrogen bonds with ions and other polar substances. 
12.

Which term refers to water having a slightly positive and a slighty negative charge on its ends?

a)

cohesion

b)

surface tension

c)

polar

d)

adhesion

13.
Surface tension is caused by ...
a)
strong cohesion between water molecules
b)
strong adhesion between the water molecules
c)
condensation
d)
water cycle
14.

The hydrogen atoms in a water molecule are ________________ charged.

a)

not

b)

negatively

c)

neutrally

d)

positively

15.

A insect like a water strider can skate along the top of a pond because:

a)

covalent bonds result in water cohesion

b)

hydrogen bonds result in water cohesion (surface tension)

c)

low surface tension of water

16.
Which term refers to water having partial positive and a partial negative charge?
a)
cohesion
b)
surface tension
c)
polarity
d)
adhesion
17.

As you add drops of water to the surface of a coin, each drop sticks to the other water droplet because of ________________, and sticks to the penny because of ______________.

a)

adhesion, cohesion

b)

cohesion, adhesion

c)

capillary action, specific heat

d)

specific heat, capillary action

18.
Large bodies of water, such as lakes and oceans, do not quickly fluctuate in temperature. What is the reason for this phenomenon?
a)
Water is an acid.
b)
Water is a versatile solvent.
c)
Water has a high heat capacity.
d)
 Water acts as a buffer.
19.
A hydrogen atom in a water molecule will be attracted to the _____________ atom of another water molecule. 
a)
oxygen
b)
hydrogen
c)
nitrogen
d)
positive 
20.

Why do elements bond?

a)

To be friends

b)

To create a new element

c)

To become stable

d)

To get bigger

21.
What is a valence electron?
a)
The sum of neutrons and protons.
b)
The # of electrons in the last shell.
c)
A type of bond.
d)
A popular compound.
22.
What is the name for an ion with a positive charge?
a)
cation
b)
anion
c)
onion
d)
union
23.
What is the name for an ion with a negative charge?
a)
cation
b)
anion
c)
onion
d)
union
24.
What kind of bond forms when atoms exchange electrons?
a)
ionic
b)
covalent
c)
artificial
d)
univalent
25.
If an atom loses two electrons what charge will it have?
a)
-2
b)
-1
c)
+1
d)
+2
26.

Which of the following describes covalent bonds?

a)

Bonds form because of opposite charges

b)

electrons are shared to fill outer electron shells

c)

Electrons are transferred between atoms

d)

Covalent bonds are magical

27.

Measure of the tendency of an atom to attract a bonding pair of electrons is known as...

a)

electronegativity

b)

bond polarity

c)

angular momentum

d)

valence electrons

28.
What elements have zero electronegativity?
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
29.

The difference in electronegativity affects the type of bond will be formed. What type of bond would be formed with a difference of 0.3?

a)

Covalent

b)

Polar Covalent

c)

Ionic

30.

The difference in electronegativity affects the type of bond will be formed. What type of bond would be formed with a difference of 2.0?

a)

Covalent

b)

Polar Covalent

c)

Ionic

31.

The difference in electronegativity affects the type of bond will be formed. What type of bond would be formed with a difference of 0.6?

a)

Covalent

b)

Polar Covalent

c)

Ionic

32.

As you look from left to right across a period, electronegativity

a)

increases

b)

decreases

33.

As you look down a group, electronegativity

a)

increases

b)

decreases

34.

What type of bond is depicted in the image?

a)

Covalent

b)

Polar Covalent

c)

Ionic

35.

Which bond shares electrons evenly?

a)

non polar Covalent

b)

Polar Covalent

c)

Ionic

36.

Which bond involves "stealing" electrons?

a)

Covalent

b)

Polar Covalent

c)

Ionic

37.

What does the word "polar" refer to?

a)

together, mutually, in common

b)

valence electrons

c)

an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.

d)

To have a positive and negative end like a magnet

38.

What type of bond would be formed between two H?

a)

Covalent

b)

Polar Covalent

c)

Ionic

39.

Polar Covalent Bonds share the bonded electrons

a)

equally

b)

unequally

40.

Non-polar bonds...

a)

have a small EN difference between atoms

b)

have a large EN difference between atoms

41.

What is a functional group?

a)

Group of atoms that give specific characteristics to a molecule

b)

Group of molecules that give specific characteristics to an atom

c)

Group of molecules that make up a group of atoms

d)

Group of atoms that give specific characteristics to an element

42.

What functional group is shown?

a)

amino

b)

hydroxyl

c)

carboxyl

d)

sulfhydryl

43.

What functional group is shown?

a)

hydroxyl

b)

carboxyl

c)

methyl

d)

carbonyl

44.

What functional group is shown?

a)

carboxyl

b)

carbonyl

c)

hydroxyl

d)

amino

45.

What functional group is shown?

a)

carbonyl

b)

hydroxyl

c)

carboxyl

d)

amino

46.
a)

sulfhydryl

b)

hydroxyl

c)

amino

d)

phosphate

47.

What functional group is shown?

a)

carboxyl

b)

phosphate

c)

hydroxyl

d)

amino

48.

What functional group is shown?

a)

hydroxyl

b)

amino

c)

carboxyl

d)

sulfhydryl

49.

What functional group(s) is/are present on the molecule? (check all that apply)

a)

Hydroxyl

b)

Carboxyl

c)

Methyl

d)

Carbonyl Aldehyde

50.

What type of bond is found in water molecules?

a)

Covalent

b)

Hydrogen

c)

Ionic

d)

Van der Waals

51.

Water property responsible for water movement up the stem

a)

Adhesion and cohesion

b)

Less dense as solid

c)

Specific heat

d)

Surface tension

52.

Water property responsible for evaporative cooling

a)

Adhesion and cohesion

b)

Less dense as solid

c)

Specific heat

d)

Surface tension

53.

Water property responsible for lake life surviving winter

a)

Adhesion and cohesion

b)

Less dense as solid

c)

Specific heat

d)

Surface tension

54.

What type of bond is found between water molecules?

a)

Covalent

b)

Hydrogen

c)

Ionic

d)

Van der Waals

55.

What is a hydrogen bond?

a)
A hydrogen bond is a strong covalent bond between two hydrogen atoms.
b)
A hydrogen bond is a type of ionic bond between hydrogen and oxygen.
c)
A hydrogen bond is a weak attraction between a hydrogen atom and an electronegative atom.
d)
A hydrogen bond is a permanent bond that holds molecules together.
56.

What property of water is responsible for skipping rocks on a pond?

a)

Adhesion

b)

Cohesion

c)

Evaporative Cooling

d)

Less Dense as Solid

57.

What property of water is responsible for aquatic life surviving winter?

a)

Adhesion

b)

Cohesion

c)

Evaporative Cooling

d)

Less Dense as Solid

58.

What property of water is used by organism during sweating?

a)

Adhesion

b)

Cohesion

c)

Evaporative Cooling

d)

Less Dense as Solid

59.

What property of water is responsible for water reaching the leaves from the soil?

a)
Osmosis
b)
Evaporation
c)
Condensation
d)
Capillary action
60.

Where are hydrogen bonds in proteins?

Note: There is more than one answer to this. Focus on the place where ONLY hydrogen bonds exist.

a)

Between amino acids

b)

Between backbone

c)

Between the R groups

d)

Between polypeptides

61.

Where are hydrogen bonds in nucleic acids?

a)

Between carbons in sugar ring

b)

Between nitrogenous bases

c)

Between nucleotides

d)

Between phosphates

62.

How do polar substances dissolve in water?

a)
Polar substances dissolve in water because of the attraction between their polar molecules and water molecules.
b)
Polar substances do not dissolve in water at all.
c)
Polar substances dissolve in water due to their non-polar nature.
d)
Polar substances dissolve in water because they repel water molecules.
63.

A macromolecule is found to have C, H, O, N, and S. Identify?

a)

Carbohydrate

b)

Lipid

c)

Nucleic Acid

d)

Protein

64.

A macromolecule is found to have C, H, O, N, and P. Identify?

a)

Carbohydrate

b)

Lipid

c)

Nucleic Acid

d)

Protein

65.

Label the functional groups present in an Amino acid?

66.

Label the parts of a nucleotide

67.

How many valence electrons does Carbon have?

a)

2

b)

3

c)

4

d)

5

68.

What type of bond does Carbon make other atoms?

a)

Covalent

b)

Hydrogen

c)

Ionic

d)

Van der Waals

69.

Why is the carbon/carbon bond non-polar but with carbon/oxygen polar?

a)

The carbon/oxygen bond is non-polar due to equal electronegativity between Carbon and Oxygen atoms

b)

The carbon/carbon bond is non-polar due to equal electronegativity between both Carbon atoms

c)
The carbon/carbon bond is polar because of the difference in atomic size.
d)
Both bonds are polar due to the presence of lone pairs on carbon.
e)

The carbon/oxygen bond is polar due to the difference in electronegativity between carbon and oxygen.

70.

Which of the following macromolecules include nitrogen?

a)

Carbohydrates & Lipids

b)

Lipids & Nucleic Acids

c)

Nucleic Acids & Proteins

d)

Proteins & Carbohydrates

71.

Select the biomolecules containing Nitrogen

a)

Carbohydrate

b)

Nucleic acids

c)

Proteins

d)

Lipids

e)

All of them

72.

Which of the following macromolecules has phosphate?

a)

Carbohydrate

b)

Fat

c)

Nucleic Acid

d)

Protein

73.

Which of the following macromolecules has sulfur?

a)

Carbohydrate

b)

Fat

c)

Nucleic Acid

d)

Protein

74.

Which macromolecule has a ratio of 1:2:1 ratio with C:H:O?

a)

Carbohydrates

b)

Lipids

c)

Nucleic Acids

d)

Proteins

75.

Phospholipids are a type of lipid that include…

a)

Nitrogen

b)

Phosphorus

c)

Sulfur

76.

Describe the difference between the dehydration and hydrolysis

a)
Dehydration and hydrolysis both involve the addition of water to create energy.
b)
Dehydration adds water to form larger molecules; hydrolysis removes water to break down molecules.
c)
Dehydration removes water to form larger molecules; hydrolysis adds water to break down molecules.
d)
Dehydration is a process that occurs only in plants, while hydrolysis occurs only in animals.
77.

Categorize the parts that make up the molecules

Nucleotide components: sugar, phosphate, and nitrogenous base

Categorize the following

Side chain (R group)

Monosaccharides such as glucose and fructose

Disaccharides like sucrose and lactose

Polysaccharides including starch and glycogen

Fatty acids that can be saturated or unsaturated

Triglycerides composed of glycerol and three fatty acids

Carboxyl group (COOH)

Amine group (NH2)

Ribose sugar

Deoxyribose

Phosphate

A, T, U, G, C

Protein
Nucleic acid
Carbohydrate
Lipid
78.

What elements are found in all lipids?

a)

CHO

b)

CHON

c)

CHOS

d)

CHOP

79.
Which 4 elements make up most of all living matter?
a)
Carbon, Hydrogen, Nitrogen, Oxygen
b)
Carbon, Oxygen, Sodium, Potassium
c)
Carbon, Hydrogen, Calcium, Nitrogen
d)
Carbon, Oxygen, Nitrogen, Sulfur
80.
When atoms share electrons unequally...
a)
a nonpolar covalent bond is formed.
b)
an ionic bond is formed.
c)
a polar covalent bond is formed.
d)
a hydrogen bond is formed.
81.

A substance that cannot be decomposed into simpler substances by chemical means - made up of the same atoms

a)

atom

b)

element

c)

molecule

d)

organism

82.

A group of two or more atoms that are bonded together

a)

elements

b)

isotopes

c)

molecules

d)

essential elements of life

83.

An atom that has a different number of neutrons than the standard for that element.

a)

element

b)

isotope

c)

molecule

d)

organism

84.
What is the difference between carbon-12 and carbon-14? (Hint: 12 and 14 are mass #)
a)
The number of protons in the nucleus.
b)
The number of protons and neutrons in the nucleus.
c)
The number of neutrons in the nucleus.
d)
The number of electrons in the orbitals.
85.
Electrons have what charge?
a)
Negative
b)
Positive
c)
Neutral
 (No Charge)
86.
The nucleus of an atom is made up of...
a)
Protons and Neutrons
b)
Neutrons and Electrons
c)
Protons and Electrons
87.
The image shows the periodic grid for POTASSIUM. What is Potassium's atomic number?
a)
19
b)
39
c)
20
d)
Impossible to tell
88.
The image shows the periodic grid for POTASSIUM. How many ELECTRONS are found in a potassium atom?
a)
19
b)
39
c)
20
d)
Impossible to tell
89.
How many elements are represented in the compound?
Na2CO3
a)
1
b)
2
c)
3
d)
4
90.
Energy of motion is which type of energy?
a)
Potential
b)
Kinetic
c)
Sound
d)
Gravitational
91.
What kind of energy is represented in the picture?
a)
Thermal
b)
Chemical
c)
Sound
d)
Nuclear
92.
Stored energy is called ______ energy.
a)
Kinetic
b)
Potential
c)
Pacific
d)
Safe
93.
Atoms gain lose, gain, or ______electrons to get a stable outer energy level.
a)
share
b)
split
c)
create
d)
destroy
94.
An ionic compound is held together by the _______--the force of attraction between opposite charges of the atoms.
a)
Covalent Bond
b)
Ionic Bond
c)
Synthetic Bond
d)
Molecular Bond
95.

Which of the following describes covalent bonds?

a)

Bonds form because of opposite charges

b)

electrons are shared to fill outer electron shells

c)

Electrons are transferred between atoms

d)

Covalent bonds are magical

96.
Valence electrons are the...
a)
Innermost electrons
b)
Middle electrons
c)
Outermost electrons
d)
Any electrons
97.

What is the greatest number of valence electrons an atom can have?

a)

2

b)

3

c)

8

d)

12

98.

TRUE OR FALSE:

Hydrogen bonds are very strong interactions between two atoms.

a)

True

b)

False

99.

The process of breaking bonds by splitting water

a)

Dehydration

b)

Hydrolysis 

100.

What is formed from hydrolysis of proteins?

a)

Amino acids

b)

Glycerol & fatty acids

c)

Monosaccharides

d)

Nucleotides

101.

Process of forming bonds by removing water molecules

a)

Dehydration

b)

Hydrolysis

102.

Dehydration with nucleotides form what?

a)

Carbohydrate

b)

Nucleic Acid

c)

Protein

d)

Triglyceride

103.

Dehydration with glycerol and fatty acids forms what?

a)

Carbohydrate

b)

Nucleic Acid

c)

Protein

d)

Triglyceride

104.

Reaction to synthesize polymers from monomers

a)

Dehydration

b)

Hydrolysis

105.

Reaction to remove monomers from polymers

a)

Dehydration

b)

Hydrolysis

106.

Type of bond broken when amino acids released

a)

Ester Linkage

b)

Peptide Bond

c)

Phosphodiester linkage

107.

What is at the 5' end of a nucleic acid?

a)

Carbon

b)

Hydroxyl

c)

Nitrogenous Base 

d)

Phosphate 

108.

What is at the 3' end of a nucleic acid?

a)

Carbon

b)

Hydroxyl

c)

Nitrogenous Base 

d)

Phosphate 

109.

What is the direction of DNA synthesis?

a)

3' to 5’

b)

5' to 3’

c)

It's anti-parallel so either direction is correct

110.

What type of bond is between nitrogenous bases?

a)

Covalent

b)

Hydrogen

c)

Ionic

d)

Van der Waals

111.

Where are new bonds formed in a growing polypeptide?

a)

Amine group

b)

Carboxyl group

c)

Hydrogen

d)

R-group

112.

What is the bond between amino acids called?

a)

Ester linkage

b)

Glycosidic linkage

c)

Peptide bond

d)

Phosphodiester linkage

113.

What level of protein structure of is described as hydrogen bonds between backbone?

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

114.

What level of protein structure of is described as peptide bonds between amino acids?

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

115.

What level of protein structure of is described as bonding between two polypeptide chains?

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

116.

What level of protein structure of is described as alpha helix/beta-pleated sheet?

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

117.

What level of protein structure of is described as bonding between R-groups or the final three-dimensional shape?

a)

Primary

b)

Secondary

c)

Tertiary

d)

Quaternary

118.

What pairs with adenine in DNA?

a)

Cytosine

b)

Guanine

c)

Thymine

d)

Uracil

119.

What is at the 5’ end of the DNA?

a)

Hydroxyl

b)

Nitrogenous Base

c)

Phosphate

d)

Sugar

120.

What is at the 3’ end of the DNA?

a)

Hydroxyl

b)

Nitrogenous Base

c)

Phosphate

d)

Sugar

121.

How many hydrogen bonds are between C & G?

a)

1

b)

2

c)

3

d)

4

122.

How many hydrogen bonds are between A & T?

a)

1

b)

2

c)

3

d)

4

123.

What is the type of bond in the secondary structure of proteins?

a)

Covalent

b)

Hydrogen

c)

Ionic

d)

Peptide

124.

The tertiary structure involves interactions of the

a)

Amino group

b)

Carboxyl group

c)

Hydrogen

d)

R group

125.

What is the type of bond found in the primary structure of proteins?

a)

Covalent

b)

Hydrogen

c)

Ionic

d)

Peptide

126.

Which describes the orientation for the new peptide bond?

First functional group is on the pre-peptide bond structure and the second functional group is on the post-peptide bond structure.

a)

Amino to Amino

b)

Amino to Carboxyl

c)

Carboxyl to Amino

d)

Carboxyl to Carboxyl

127.

How does the structure of fat differ from the structure of a phospholipid?

a)

Fat has an extra fatty acid

b)

Fat has a phosphate group instead of a fatty acid

c)

Phospholipid has an extra fatty acid

d)

Phospholipids have a phosphate instead of a fatty acid

128.

How does the pentose sugar differ between DNA and RNA?

a)

DNA= deoxyribose,

RNA= ribose

b)

DNA= dextrose, RNA= ribose

c)

DNA= deoxyribose,

RNA= ribozyme

d)

DNA= dextrose, RNA= ribozyme

129.

How does the nitrogenous base differ between DNA and RNA?

a)

DNA - cytosine, RNA - guanine

b)

DNA - uracil,

RNA - thymine

c)

DNA - guanine, RNA - cytosine

d)

DNA - thymine, RNA - uracil

130.

How does the phosphate differ between DNA and RNA?

a)

DNA- 1 phosphate,

RNA- 2 phosphate

b)

DNA- phosphate acts as acid,

RNA- phosphate acts as base

c)

There is no difference

131.

Traditionally, how is the strands different?

a)

DNA - single,

RNA - double

b)

DNA - single,

RNA - triple

c)

DNA - double,

RNA - single

d)

DNA - triple,

RNA - single

132.

What is the pentose sugar found in DNA?

a)

Deoxyribose

b)

Dextrose

c)

Ribose

d)

Rubisco

133.

What is the pentose sugar found in RNA?

a)

Deoxyribose

b)

Dextrose

c)

Ribose

d)

Rubisco

134.

Which nitrogenous base is not found in RNA?

a)

Adenine

b)

Cytosine

c)

Thymine

d)

Uracil

135.

What is the directionality of a DNA strand?

a)

DNA is 3’ to 5’ and antiparallel

b)

DNA is 5’ to 3’ and antiparallel

c)

DNA is 3’ to 5’ and parallel

d)

DNA is 5’ to 3’ and parallel

136.

DNA is usually ___ and RNA is usually ___

a)

Double stranded; double stranded

b)

Double stranded; single stranded

c)

Single stranded; double stranded

d)

Single stranded; single stranded

137.

Which of the following is responsible for the cohesive property of water?

a)

Hydrogen bonds between the oxygen atoms of two adjacent water molecules

b)

Covalent bonds between the hydrogen atoms of two adjacent water molecules

c)

Hydrogen bonds between the oxygen atom of one water molecule and a hydrogen atom of another water molecule

d)

Covalent bonds between the oxygen atom of one water molecule and a hydrogen atom of another water molecule

138.

In which scenario is cohesion most evident?

a)

Water droplets spreading out on a glass surface

b)

Water droplets forming on a spider web

c)

Oil mixing with water

d)

Salt dissolving in water

139.

(Page 47) Match the following

a)

attraction between molecules of the same substance

1.

Cohesion definition

b)

attraction between molecules of a different substance

2.

Adhesion definition

c)
3.

Cohesion picture

d)
4.

Adhesion picture

140.

Match the following

a)

Cohesion

1.

When water is attracted to water

b)

Adhesion

2.

When water is attracted to other things

c)

Universal Solvent

3.

Water

141.

Which of the following does not result from hydrogen bonding in water molecules?

a)

Cohesion

b)

Adhesion

c)

Surface Tension

d)

Dissolving fats

142.

Why is water considered polar?

a)

Nonpolar covalent bonds in structure

b)

Ionic bonds in structure

c)

Polar covalent bonds in structure

d)

Hydrophobic interaction in structure

143.

Which macromolecule(s) have nitrogen?

a)

Carbohydrates

b)

Proteins

c)

Nucleic Acids

d)

Nucleic Acids & Proteins

144.

Which macromolecule(s) have phosphorus?

a)

Carbohydrates

b)

Proteins

c)

Nucleic Acids

d)

Fats

145.

Which macromolecule(s) have sulfur?

a)

Carbohydrates

b)

Proteins

c)

Nucleic Acids

d)

Fats

146.

Describes the forming of a bond between monomers with the removal of a water molecule.

a)

Hydrolysis

b)

Dehydration

147.

Describes the breaking of a bond within a polymer using water.

a)

Hydrolysis

b)

Dehydration

148.

Which of the following is NOT in the monomer of a nucleic acid?

a)

pentose sugar

b)

nitrogenous base

c)

phosphate

d)

amino acid

149.

Which of the following is NOT in the monomer of a protein?

a)

Amine Group

b)

R Group

c)

Carboxyl Group

d)

Nitrogenous Base

150.

Describe the orientation of the phospholipids in the membrane.

a)

Phospholipids orient in bilayer with hydrophilic heads on exterior

b)

Phospholipids orient in monolayer with hydrophilic head on extracellular

c)

Phospholipids orient in bilayer with hydrophobic tails on exterior

d)

Phospholipids orient in monolayer with hydrophobic tails on extracellular

151.

How is DNA/RNA synthesis directionally oriented?

a)

new nucleotides are added to 5' phosphate

b)

new nucleotides are added to 3' phosphate

c)

new nucleotides are added to 5' hydroxyl

d)

new nucleotides are added to 3' hydroxyl

152.

Identify the pairing and number of bonds in DNA double helix

a)

A pairs with T (2 bonds) & G pairs with C (3 bonds)

b)

A pairs with G (2 bonds) & T pairs with C (3 bonds)

c)

A pairs with T (3 bonds) & G pairs with C (2 bonds)

d)

A pairs with G (3 bonds) & T pairs with C (2 bonds)

153.

What component of the polypeptide is the next amino acid added forming the peptide bond?

a)

amino group

b)

hydrogen

c)

carboxyl group

d)

R groups

154.

Which protein involves R group bonding to form the final three dimensional structure?

a)

primary

b)

secondary

c)

tertiary

d)

quaternary

155.

Which protein structure involves the peptide bonds between amino acids?

a)

primary

b)

secondary

c)

tertiary

d)

quaternary

156.

DNA and RNA differ on many qualities, which of the following is NOT a difference?

a)

Sugar

b)

Nitrogenous Base

c)

Phosphate Group

d)

Strandedness

157.

Match the following elements to their correct biomolecules:

a)

Carbohydrates/Lipids

1.

C H O

b)

Proteins

2.

C H O N

c)

Nucleic acids

3.

C H O N P

158.

Match the following

a)

Glucose

1.

Energy source for cells

b)

Chitin

2.

Structural component in arthropod exoskeletons

c)

Cellulose

3.

Main component of plant cell walls

159.

Match the following macromolecules to their functions:

a)

Carbohydrates

1.

Provide quick energy

b)

Lipids

2.

Store energy long term

c)

Proteins

3.

Structural components/Pro's of the cell

d)

Nucleic acids

4.

Genetic information storage

160.

Match the following macromolecules to their monomers:

a)

Carbohydrates

1.

Monosaccharides

b)

Lipids

2.

Fatty acids

c)

Proteins

3.

Amino acids

d)

Nucleic acids

4.

Nucleotides

161.
The following figure is illustrating
a)
Dehydration Synthesis
b)
Hydrolysis
162.
The following figure is illustrating
a)
Dehydration Synthesis
b)
Hydrolysis
163.
Identify the reaction process shown.
164.

Label the atoms and Identify the type of bond between the molecules.