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FINAL EXAM

Total questions: 66

Worksheet time: 33mins

Name
Class
Date
1.

which of the following is a polysaccharide?

a)

sucrose

b)

starch

c)

maltose

d)

glucose

2.

which of the following is a disaccharide?

a)

Glucose

b)

Sucrose

c)

Mannose

3.

Which of the following is a monosaccharide

a)

Maltose

b)

Mannose

4.

How many monosaccharides are connected to each other in a disaccharide?

a)

1

b)

2

c)

3

d)

4

5.

How many monosaccharides are connected to each other in an oligosaccharide?

a)

3-9

b)

more than 9

c)

2

6.

The general formula for a carbohydrate is:

a)

Cn(H2O)n

b)

CnH2n+2

c)

CnH2n

7.

Which of the following functional groups is just a carbon double bonded to an oxygen atom?

a)

Carbonyl

b)

Ester

c)

Alcohol

8.

Which of the following functional groups comprises a carbon atom bonded to a hydroxyl group?

a)

Thiol

b)

Alcohol

9.

A carbohydrate with an aldehyde functional group is called:

a)

hexose

b)

aldose

c)

ketose

10.

A carbohydrate with a ketone functional group is called:

a)

ketose

b)

aldose

c)

disaccharide

11.

A carbohydrate with 5 carbons is called a:

a)

hexose

b)

pentose

12.

A carbohydrate with 4 carbons is called a:

a)

tetrose

b)

hexose

c)

triose

13.

A carbohydrate with 6 carbons and a ketone functional group is called a(n):

a)

ketohexose

b)

aldohexose

14.

The most abundant monosaccharide in nature is:

a)

galactose

b)

glucose

c)

mannose

15.

Galactose is called a(n):

a)

aldopentose

b)

aldohexose

c)

ketohexose

16.

Fructose is called a(n):

a)

ketohexose

b)

aldohexose

c)

ketopentose

17.

An aldohexose contains ________ carbon atoms and a/an ________ group.

a)

five, aldehyde

b)

six, aldehyde

c)

six, ketone

18.

A ketotetrose contains ________ carbon atoms and a/an ________ group.

a)

four, ketone

b)

four, aldehyde

c)

three, ketone

19.

Ribose is a(n):

a)

aldopentose

b)

ketopentose

c)

ketohexose

20.

What types of alcohols are found in carbohydrates?

a)

Primary only

b)

Both primary and secondary

21.

In the Fischer projection of a carbohydrate, the wedges are represented by ________ lines and the dashes are represented by ________ lines.

a)

horizontal, vertical

b)

horizontal, horizontal

c)

vertical, horizontal

22.

The configuration at which carbon atom determines if a monosaccharide is D or L?

a)

the highest numbered chiral carbon

b)

the lowest numbered chiral carbon

23.

When an organic molecule loses one or more hydrogen atoms it is said to be:

a)

reduced

b)

oxidized

24.

When an organic molecule gains one or more hydrogen atoms it is said to be:

a)

reduced

b)

oxidized

c)

both

25.

When a substance is oxidized, it is called a(n):

a)

reducing agent

b)

neither

c)

oxidizing agent

26.

When a substance is reduced, it is called a(n):

a)

oxidizing agent

b)

reducing agent

c)

both

27.

In the Benedict's test:

a)

an aldehyde is oxidized

b)

the copper (II) ion is oxidized

c)

all of the above occur in the Benedict's test

28.

The substance that precipitates in a positive Benedict test is:

a)

Ag

b)

CuO

c)

CU2O

29.

Lactose is made from D-glucose and:

a)

galactose

b)

ribose

c)

glucose

30.

Which of the following is a non-reducing sugar?

a)

sucrose

b)

mannose

31.

Which of these polysaccharides is not made exclusively from α-glucose units?

a)

Cellulose

b)

Amylopectin

c)

Glycogen

32.

Which of the following is the storage form of glucose in the liver and muscle tissue?

a)

Glycogen

b)

Amylopectin

c)

Amylose

33.

Which one of these polysaccharides is not used in energy storage?

a)

Cellulose

b)

Amylopectin

34.

Which one of these polysaccharides contains β-N-acetylglucosamine units forming β(1→4) bonds?

a)

Chitin

b)

Amylose

35.

Which of the following is the structural polysaccharide in plants?

a)

Cellulose

b)

Glycogen

c)

Amylopectin

36.

The polysaccharide the makes up the exoskeleton of insects is:

a)

chitin

b)

glycogen

c)

cellulose

37.

The variables kept constant in Boyle's law are:

a)

amount of gas and volume

b)

amound of gas and temperature

38.

The variables kept constant in Charles' law are:

a)

amound of gas and pressure

b)

amount of gas and volume

39.

Gay-Lussac's law relates the variables of:

a)

pressure and temperature

b)

pressure and volume

40.

Which of these statements is not compatible with the kinetic molecular theory?

a)

Gas particles move more quickly at higher temperature.

b)

Gas particles have strong attractive forces between them.

c)

Gas particles are far apart from each other.

41.

The predominant intermolecular force between molecules of (CH3)2NH is:

a)

hydrogen bonding

b)

dipole-dipole attractions

c)

ion-dipole attractions

42.

The predominant intermolecular force between molecules of (CH3)3N is:

a)

london-dispersion forces

b)

hydrogen bonding

c)

dipole-dipole attractions

43.

The weakest attractive force among these is:

a)

London-dispersion force

b)

Hydrogen bonding

44.

London dispersion force attractions between molecules depends on what two factors?

a)

Molar mass and shape

b)

Molar mass and volatility

c)

Volatility and shape

45.

Which of the following statements about intermolecular forces is true?

a)

They occur within molecules rather than between the molecules.

b)

Dipole-dipole interactions occurs between two polar molecules.

c)

Hydrogen bonding occurs between any two molecules that contain hydrogen atoms.

46.

When NaCl dissolves in water, the force of attraction that exists between Na+ and H2O is called:

a)

ion-dipole

b)

dipole-dipole

47.

________ attractions are the only ones that all molecules have regardless of composition or polarity.

a)

Dipole-dipole attractions

b)

London dispersion forces

48.

Hydrogen bonding is a special form of:

a)

dipole-dipole attractions

b)

ion-ion interactions

c)

ion-dipole forces

49.

Which of the following compounds cannot exhibit hydrogen bonding?

a)

CH4

b)

H2O

50.

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?

a)

Dipole-dipole forces < hydrogen bonds < London dispersion forces

b)

London dispersion forces < dipole-dipole forces < hydrogen bonds

c)

London dispersion forces < hydrogen bonds < dipole-dipole forces

51.

The transition from the gas phase directly to the solid phase is called

a)

sublimation

b)

deposition

c)

freezing

52.

In sublimation, the ________ state is turned directly into the ________ state.

a)

solid, gas

b)

gas, solid

c)

gas, liquid

53.

In condensation, the ________ state is turned directly into the ________ state.

a)

gas, liquid

b)

liquid, solid

54.

Stronger intermolecular forces predict ________ boiling point and ________ vapor pressure.

a)

higher, lower

b)

lower, higher

55.

Soaps can be described as

a)

salts of fatty acids

b)

esters of fatty aids

c)

long chain acids

56.

The long hydrocarbon tails of soap molecules are:

a)

hydrophilic and attracted to water

b)

hydrophobic and attracted to oils

57.

The polar heads of soap molecules are:

a)

hydrophobic and attracted to oils

b)

hydrophilic and attracted to water

58.

Fats are generally ________ at room temperature and are obtained from ________.

a)

solids; animals

b)

liquids; plants

c)

solids; plants

59.

Oils are generally ________ at room temperature and are obtained from ________.

a)

solids; animals

b)

liquids; plants

60.

What chemical process is used to convert oils into fats and semi-solids?

a)

Hydration

b)

Hydrogenation

c)

Saponification

61.

In naturally occurring unsaturated fatty acids the double bonds are:

a)

all cis

b)

all trans

62.

Which of the following is most likely to be found in the central region of a lipid membrane?

a)

Glucose

b)

Cholesterol

c)

Glycine

63.

The phosphate group in a phospholipid is:

a)

ionic

b)

covalent

64.

In a lipid bilayer:

a)

the hydrophobic heads point to the hydrophilic tails

b)

the hydrophobic tails of the molecules point toward each other

65.

Which of the following types of lipids is predominantly found in cell membranes?

a)

Waxes

b)

Phospholipids

c)

Triglycerides

66.

Which of the following statements is not correct about cholesterol?

a)

It is soluble in non-polar solvents

b)

It is soluble in polar solvents.

c)

It is an essential component of cell membranes.