Name______________________________________________________
Date___________________
AP Biology
Practice Questions- Biochemistry
A + B + energy → AB
1. There are many types of biochemical reactions taking place in any living system. Which of the following
best characterizes the reaction represented above?
A) Catabolism
B) Oxidation-reduction
C) Exergonic reaction
D) Endergonic reaction
Questions 2 &3 refer to the biomolecule below.
2. The structure above could be any of the following EXCEPT a
A) nucleotide
B) monomer used as a component of a polypeptide
C) reactant used in the synthesis of nucleic acids
D) molecule that is the energy source for most anabolic activity in cells
3. So-called high-energy bonds include the bonds at
A) A and B only
B) B and C only
C) C and D only
D) D and E only
4. Fats consist of a wide group of compounds that are generally soluble in organic solvents and generally insoluble in
water. Chemically, fats are triglycerides, triesters of glycerol and any of several fatty acids. Fats may be either
solid or liquid at room temperature, depending on their structure and composition. Which of the following is
essential for the synthesis of neural fats?
A) Glucose
B) Glycerol
C) Glycogen
D) Glucagon
5. A carbohydrate is an organic compound that consists only of carbon, hydrogen, and oxygen, usually with a
hydrogen:oxygen atom ratio of 2:1; in other words, with the empirical formula C m(H2O)n. Which of the following
is a storage form of carbohydrate in muscle?
A) Glucose
B) Glycerol
C) Glycogen
D) Glucagon
6. Biopolymers are polymers produced by living organisms. Since they are polymers, biopolymers contain
monomeric units that are covalently bonded to form larger structures. Which of the following
biopolymers includes glycogen, chitin, cellulose and glucose?
A) Proteins
B) Carbohydrates
C) Nucleic Acids
D) Lipids
Class________________
7. A wide range of marine mammals and fish live in the severe conditions of the Arctic ocean. Whales,
dolphins, walruses and seals all make their home in this North Polar region which is covered by ice most
of the year. Which of the following is used for insulation and buoyancy in marine Arctic animals?
A) Proteins
B) Carbohydrates
C) Nucleic Acids
D) Lipid
Which four elements make up approximately 96% of living matter?
a.
b.
c.
d.
Carbon, hydrogen, nitrogen, oxygen
Carbon, sulfur, phosphorus, hydrogen
Oxygen, hydrogen, calcium, sodium
Carbon, sodium, chlorine, magnesium
Which of the following is responsible for the cohesive property of water?
a.
b.
c.
d.
Hydrogen bonds between the oxygen atoms of two adjacent water molecules
Covalent bonds between the hydrogen atoms of two adjacent water molecules
Hydrogen bonds between the oxygen atom of one water molecule and a hydrogen atom of another
Covalent bonds between the oxygen atom of one water molecule and a hydrogen atom of another
Which of the following best describes the relationship between proteins, RNA, and DNA in Proteins
a. DNA->RNA-> Protein
b. RNA->DNA->Protein
c. Protein->RNA->DNA
d. Protein->DNA->RNA