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AP Biology Unit 1 Review

Total questions: 40

Worksheet time: 1hrs 15mins

Name
Class
Date
1.

The Oxygen atoms in the molecule shown have this charge:

a)

Positive

b)

Partial Positive

c)

Negative

d)

Partial Negative

2.
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.
3.
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.
4.
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
5.
Attractions between the negative Oxygen atom of one water molecule and the positive Hydrogen atom of another water molecule are called
a)
Covalent bonds
b)
Ionic bonds
c)
Polar bonds
d)
Hydrogen bonds
6.
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 most substances
7.

Capillary action is in part the result of adhesion. Which aspect of water is responsible for this?

a)

Nonpolar covalent bonds that enable water to dissolve other substances

b)

Polar covalent bonds that join molecules of water to other substances

c)

Hydrogen bonds between water and another substance

d)

Ionic bonds that enable electrons to flow through water and into another substance

8.
What property of water allows it to be such a versatile solvent that it is often called the "universal solvent?"
a)
Purity
b)
Polarity and cohesion
c)
High heat capacity
d)
Expansion upon freezing
9.

The ability of water molecules to stick to each other, creating surface tension is called:

a)

Cohesion

b)

Adhesion

c)

Insulation

d)

Ph

10.

The fact that water can stick to other substances is called:

a)

Ph

b)

Adhesion

c)

Cohesion

d)

Insulation

11.
Which biomolecule is a main source of quick energy?
a)
Nucleic Acid
b)
Protein
c)
Lipid
d)
Carbohydrate
12.
Which biomolecule is found in fats, oils, and waxes and is a source of long-term energy? 
a)
Proteins
b)
Nucleic Acid
c)
Lipids
d)
Carbohydrate
13.

Storage of fat by the body is advantageous primarily because fats

a)

are insoluble and chemically stable

b)

can be digested with less energy and fewer enzymes than carbohydrates and proteins

c)

yield, gram for gram, more than twice as much energy as complex carbohydrates and proteins

d)

store almost all potential energy in chemical bonds

14.

monosaccharides, fatty acid and glycerol, amino acids, and nucleotides are examples of _____________.

a)

Elements

b)

Compounds

c)

Macromolecules

d)

Monomers

15.

What are the monomers that make up lipids?

a)

monosaccharides

b)

glycerols and fatty acids

c)

amino acids

d)

nucleotides

16.

A polymer of glucose that serves as a storage macromolecule in animals is

a)

chitin

b)

cellulose

c)

glycogen

d)

amylase

17.
What elements are common to all 4 biomolecules?
a)
Carbon, hydrogen, nitrogen
b)
Carbon, Nitrogen, Phosphorus
c)
Carbon, Hydrogen, Oxygen
d)
Carbon, Hydrogen, Phosphorus
18.

Carbohydrates are made of which elements?

a)

Carbon (C)

b)

Hydrogen (H)

c)

Oxygen (O)

d)

Nitrogen (N)

e)

Phosphorus (P)

19.

Lipids are made of which elements?

a)

Carbon (C)

b)

Hydrogen (H)

c)

Oxygen (O)

d)

Nitrogen (N)

e)

Phosphorus (P)

20.

Proteins are made of which elements?

a)

Carbon (C)

b)

Hydrogen (H)

c)

Oxygen (O)

d)

Nitrogen (N)

e)

Phosphorus (P)

21.

Nucleic Acids are made of which elements?

a)

Carbon (C)

b)

Hydrogen (H)

c)

Oxygen (O)

d)

Nitrogen (N)

e)

Phosphorus (P)

22.

What macromolecule is shown above?

a)

Carbohydrate

b)

Lipid

c)

Protein

d)

Nucleic Acid

23.

Which biomolecule is this a picture of?

a)

Protein

b)

Nucleic Acid

c)

Lipid

d)

Carbohydrate

24.

Which biomolecule is this a picture of?

a)

Protein

b)

Nucleic Acid

c)

Lipid

d)

Carbohydrate

25.

​​​Which of the following statements is/are true regarding the chemical reaction illustrated in Figure 5.5?

a)

It is a hydrolysis reaction.

b)

It is a hydrolysis reaction and it results in a peptide bond.

c)

It results in a dehydration reaction that is breaking the two amino acids apart.

d)

It is a dehydration reaction that is joining two amino acids together.

26.

Polysaccharides are best described as:

a)

a complex molecules such as starches that are composed of many chains of sugar monomers

b)

chains of amino acids joined by peptide bonds

c)

molecules made of glycerol and three fatty acid chains

d)

a five- or six-carbon sugar molecule bonded to an aldehyde or ketone group.

27.
What macromolecule makes up the cell membrane's lining?
a)
Saturated Fatty acid chains
b)
Phospholipids
c)
Polypeptide chains
d)
Cellulose polysaccharide Chains
28.
DNA & RNA are examples of this type of macromolecule.
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
29.

Which macromolecule(s) have sulfur?

a)

Carbohydrates

b)

Proteins

c)

Nucleic Acids

d)

Fats

30.

Which protein structure involves the peptide bonds between amino acids?

a)

primary

b)

secondary

c)

tertiary

d)

quaternary

31.
The name of the initial chain of monomers in a protein is called.....
a)
polypeptide
b)
polysaccharide
c)
polyester
d)
polynucleotide
32.
The two types of folding in the secondary structure are.....
a)
alpha-helix & beta-pleated sheets
b)
polypeptide & nucleotide
c)
globular & fibrous
33.
The tertiary structure folding in proteins is primary due to the interactions of....
a)
the 'R' groups
b)
the 'P' groups
c)
the 'A' groups
d)
the 'S'
34.

Genetic information stored in DNA is coded in...

a)

the directionality of the molecule

b)

the complementary base pairs

c)

the sugar phosphate backbone

d)

the sequence of bases in a single strand

35.

DNA and RNA nucleotides are added via dehydration synthesis forming ...

a)

helical structure

b)

ionic bonds

c)

covalent bonds

d)

hydrogen bonds

36.

Substitution of amino acids in primary struture does not affect subsequent levels of protein folding.

a)

True

b)

False

37.

DNA and RNA have the same 5-carbon sugar and the same nucleotides.

a)

True

b)

False

38.

n the 1950s, the scientist Alfred Hershey and Marth Chase carried out an experiment using bacteriophages, which are viruese that infect bacteria. During the experiment, the scientists allowed bacteriophages that had been labeled with a radioactive element to infect the cells.


After carrying out their experiment, the scientists concluded that bacteriophages inject DAN, but not protein, into the host bacterial cell during infection.


To be able to reach this conclusion the scientists found which element inside the bacteria cells?

a)

radioactive carbon

b)

radioactive phosphorus

c)

radioactive hydrogen

d)

radioactive sulfur

39.

A scientist grew Chlorella, a single-celled photosynthetic algae, for three weeks in a laboratory culture. The culture medium contained dissolved carbon and other nutrients.


Scientists measured the beginning and the end of the three week period. Based on the results of the graph which nutriets were absent from the culture medium?

a)

phosphorus

b)

nitrogen

c)

oxygen

d)

sulfur

40.

A scientist grew Chlorella, a single-celled photosynthetic algae, for three weeks in a laboratory culture. The culture medium contained dissolved carbon and other nutrients.


Scientists measured the beginning and the end of the three week period. Based on the results of the graph which nutriets were absent from the culture medium?

a)

phosphorus

b)

nitrogen

c)

oxygen

d)

sulfur

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