WorksheetsFINAL EXAM
Total questions: 66
Worksheet time: 33mins
which of the following is a polysaccharide?
sucrose
starch
maltose
glucose
which of the following is a disaccharide?
Glucose
Sucrose
Mannose
Which of the following is a monosaccharide
Maltose
Mannose
How many monosaccharides are connected to each other in a disaccharide?
1
2
3
4
How many monosaccharides are connected to each other in an oligosaccharide?
3-9
more than 9
2
The general formula for a carbohydrate is:
Cn(H2O)n
CnH2n+2
CnH2n
Which of the following functional groups is just a carbon double bonded to an oxygen atom?
Carbonyl
Ester
Alcohol
Which of the following functional groups comprises a carbon atom bonded to a hydroxyl group?
Thiol
Alcohol
A carbohydrate with an aldehyde functional group is called:
hexose
aldose
ketose
A carbohydrate with a ketone functional group is called:
ketose
aldose
disaccharide
A carbohydrate with 5 carbons is called a:
hexose
pentose
A carbohydrate with 4 carbons is called a:
tetrose
hexose
triose
A carbohydrate with 6 carbons and a ketone functional group is called a(n):
ketohexose
aldohexose
The most abundant monosaccharide in nature is:
galactose
glucose
mannose
Galactose is called a(n):
aldopentose
aldohexose
ketohexose
Fructose is called a(n):
ketohexose
aldohexose
ketopentose
An aldohexose contains ________ carbon atoms and a/an ________ group.
five, aldehyde
six, aldehyde
six, ketone
A ketotetrose contains ________ carbon atoms and a/an ________ group.
four, ketone
four, aldehyde
three, ketone
Ribose is a(n):
aldopentose
ketopentose
ketohexose
What types of alcohols are found in carbohydrates?
Primary only
Both primary and secondary
In the Fischer projection of a carbohydrate, the wedges are represented by ________ lines and the dashes are represented by ________ lines.
horizontal, vertical
horizontal, horizontal
vertical, horizontal
The configuration at which carbon atom determines if a monosaccharide is D or L?
the highest numbered chiral carbon
the lowest numbered chiral carbon
When an organic molecule loses one or more hydrogen atoms it is said to be:
reduced
oxidized
When an organic molecule gains one or more hydrogen atoms it is said to be:
reduced
oxidized
both
When a substance is oxidized, it is called a(n):
reducing agent
neither
oxidizing agent
When a substance is reduced, it is called a(n):
oxidizing agent
reducing agent
both
In the Benedict's test:
an aldehyde is oxidized
the copper (II) ion is oxidized
all of the above occur in the Benedict's test
The substance that precipitates in a positive Benedict test is:
Ag
CuO
CU2O
Lactose is made from D-glucose and:
galactose
ribose
glucose
Which of the following is a non-reducing sugar?
sucrose
mannose
Which of these polysaccharides is not made exclusively from α-glucose units?
Cellulose
Amylopectin
Glycogen
Which of the following is the storage form of glucose in the liver and muscle tissue?
Glycogen
Amylopectin
Amylose
Which one of these polysaccharides is not used in energy storage?
Cellulose
Amylopectin
Which one of these polysaccharides contains β-N-acetylglucosamine units forming β(1→4) bonds?
Chitin
Amylose
Which of the following is the structural polysaccharide in plants?
Cellulose
Glycogen
Amylopectin
The polysaccharide the makes up the exoskeleton of insects is:
chitin
glycogen
cellulose
The variables kept constant in Boyle's law are:
amount of gas and volume
amound of gas and temperature
The variables kept constant in Charles' law are:
amound of gas and pressure
amount of gas and volume
Gay-Lussac's law relates the variables of:
pressure and temperature
pressure and volume
Which of these statements is not compatible with the kinetic molecular theory?
Gas particles move more quickly at higher temperature.
Gas particles have strong attractive forces between them.
Gas particles are far apart from each other.
The predominant intermolecular force between molecules of (CH3)2NH is:
hydrogen bonding
dipole-dipole attractions
ion-dipole attractions
The predominant intermolecular force between molecules of (CH3)3N is:
london-dispersion forces
hydrogen bonding
dipole-dipole attractions
The weakest attractive force among these is:
London-dispersion force
Hydrogen bonding
London dispersion force attractions between molecules depends on what two factors?
Molar mass and shape
Molar mass and volatility
Volatility and shape
Which of the following statements about intermolecular forces is true?
They occur within molecules rather than between the molecules.
Dipole-dipole interactions occurs between two polar molecules.
Hydrogen bonding occurs between any two molecules that contain hydrogen atoms.
When NaCl dissolves in water, the force of attraction that exists between Na+ and H2O is called:
ion-dipole
dipole-dipole
________ attractions are the only ones that all molecules have regardless of composition or polarity.
Dipole-dipole attractions
London dispersion forces
Hydrogen bonding is a special form of:
dipole-dipole attractions
ion-ion interactions
ion-dipole forces
Which of the following compounds cannot exhibit hydrogen bonding?
CH4
H2O
For a series of small molecules of comparable molecular weight, which one of the following choices lists the intermolecular forces in the correct increasing order?
Dipole-dipole forces < hydrogen bonds < London dispersion forces
London dispersion forces < dipole-dipole forces < hydrogen bonds
London dispersion forces < hydrogen bonds < dipole-dipole forces
The transition from the gas phase directly to the solid phase is called
sublimation
deposition
freezing
In sublimation, the ________ state is turned directly into the ________ state.
solid, gas
gas, solid
gas, liquid
In condensation, the ________ state is turned directly into the ________ state.
gas, liquid
liquid, solid
Stronger intermolecular forces predict ________ boiling point and ________ vapor pressure.
higher, lower
lower, higher
Soaps can be described as
salts of fatty acids
esters of fatty aids
long chain acids
The long hydrocarbon tails of soap molecules are:
hydrophilic and attracted to water
hydrophobic and attracted to oils
The polar heads of soap molecules are:
hydrophobic and attracted to oils
hydrophilic and attracted to water
Fats are generally ________ at room temperature and are obtained from ________.
solids; animals
liquids; plants
solids; plants
Oils are generally ________ at room temperature and are obtained from ________.
solids; animals
liquids; plants
What chemical process is used to convert oils into fats and semi-solids?
Hydration
Hydrogenation
Saponification
In naturally occurring unsaturated fatty acids the double bonds are:
all cis
all trans
Which of the following is most likely to be found in the central region of a lipid membrane?
Glucose
Cholesterol
Glycine
The phosphate group in a phospholipid is:
ionic
covalent
In a lipid bilayer:
the hydrophobic heads point to the hydrophilic tails
the hydrophobic tails of the molecules point toward each other
Which of the following types of lipids is predominantly found in cell membranes?
Waxes
Phospholipids
Triglycerides
Which of the following statements is not correct about cholesterol?
It is soluble in non-polar solvents
It is soluble in polar solvents.
It is an essential component of cell membranes.
