DO NOT WRITE ON THIS TEST! Test # ____
BIOCHEMISTRY TEST
1) What type of molecule is pictured below?
a. Polypeptide
b. A carbohydrate polymer
c. Glucose monomer
2) What are the monomers of a protein?
a. glucose
b. 1 glycerol and 3 fatty acids
c. disaccharide
d. amino acids
3) Which proteins in the cell speed up chemical reactions?
a. Lipids
b. DNA
c. Enzymes
d. Glucose
4) Which of the following biomolecules are fat molecules that store energy and serve as insulation?
a. Proteins
b. Nucleic acids
c. Carbohydrates
d. Lipids
5) Which of the following is the smallest unit of an element that still has the properties of that element?
a. Atom
b. Molecule
c. Cell
d. Electron
6) The small molecule that is the individual unit of a polymer:
a. Atom c. Monomer
b. Dimmer d. Proton
7) Carbohydrates include all the following compounds except:
a. Starches c. Salt
b. Sugars d. Glucose
8) Polymers of carbohydrates are called:
a. Proteins c. DNA or RNA
b. Polysaccharides d. Lipids
9) Polymers of nucleotides are called:
a. Proteins c. DNA or RNA
b. Polysaccharides d. Lipids
10) Polymers of lipids are called:
a. Proteins c. glycerol and fatty acids
b. Polysaccharides d. water
11) Which statement below accurately describes the charge and location of an electron?
a. Electrons have a negative charge and are located in the nucleus of an atom
b. Electrons have a positive charge and are located in the nucleus of an atom
c. Electrons have a negative charge and are located outside of the nucleus of an atom
d. Electrons have a neutral charge and are located in the nucleus of an atom
12) An ionic bond results from:
- Sharing of one or more protons with a different atom
- Sharing of one or more electrons with a different atom
- Complete transfer of one or more electrons to another atom
- Complete transfer of one or more electrons to a cell
13) Which of the following is NOT one of the elements found in all organic compounds?
a. carbohydrates c. salts
b. lipids d. amino acids
14) A covalent bond results from
- Sharing of one or more protons with a different atom.
- Sharing of one or more electrons with a different atom.
- Complete transfer of one or more electrons to another atom.
- Complete transfer of one or more electrons to a cell.
15) Which of the following biomolecules gives quick energy?
a. carbohydrates c. nucleic acids
b. proteins d. water
16) All of the following are sources of protein in a diet except:
a. steak c. fish
b. eggs d. bread
17) What is the name for the place on an enzyme where the substrate attaches?
a. substrate c. active site
b. enzyme d. denature
18) Which statement below accurately describes the charge and location of a proton?
a. Protons have a negative charge and are located in the nucleus of an atom.
b. Protons have a positive charge and are located in the nucleus of an atom.
c. Protons have a negative charge and are located outside of the nucleus of an atom.
d. Protons have a neutral charge and are located in the nucleus of an atom.
19) Amylase is an enzyme in human saliva which is responsible for breaking down starch into glucose monomers. Enzymes help the digestive process by ______the speed of the reaction and ______the amount of energy needed for the reaction to occur.
a. decreasing / lowering
b. stopping / increasing
c. increasing / lowering
d. there is no change with an enzyme
20) Which statement below accurately describes the charge and location of a neutron?
a. Neutrons have a negative charge and are located in the nucleus of an atom.
b. Neutrons have a positive charge and are located in the nucleus of an atom.
c. Neutrons have a negative charge and are located outside of the nucleus of an atom.
d. Neutrons have no charge and are located in the nucleus of an atom.
21) The attraction between two molecules of different substances is called:
a. adhesion c. hydrolysis
b. cohesion d. condensation
Use the following diagram to answer questions 22-24.
A B C D
22) Which letter represents the products of the reaction?
A C
B D
23) The substrate is represented by which letter?
A C
B D
24) What letter is referring to the enzyme in this reaction?
A C
B D
25) What is the term for the energy necessary to start a chemical reaction?
a. adhesion energy
b. activation energy
c. cohesion energy
d. chemical energy
26) A substance the increases the rate of chemical reactions is called a(n):
a. catalyst c. protein
b. molecule d. element
27) Drops of water are formed because of which of the following properties?
a. surface tension c. polarity
b. adhesion d. cohesion
28) Water bugs can walk on water because of the property called:
a. adhesion
b. surface tension
c. polarity
d. cohesion
Use this table to answer questions 29-34
Carbohydrate / Lipid / Protein / Nucleic AcidMonomer: / a. / b. / d. / nucleotide
Polymer: / starch / Lipid , fat / e. / f.
Example in Diet: / Bread
pasta / c. / meat / Living things
29) Which of the following would be placed in “a”?
a. fatty acids and glycerol c. polypeptide
b. amino acids d. monosaccharide
30) Which of the following would be placed in “b”?
a. glycerol and fatty acids c. polypeptide
b. amino acids d. glucose
31) Which of the following would be placed in “c”?
a. grains c. animal fats
b. oranges d. cereal
32) Which of the following would be placed in “d”?
a. fatty acids and glycerol c. polypeptide
b. amino acids d. glucose
33) Which of the following would be placed in “e”?
a. DNA or RNA c. polypeptide
b. amino acids d. glucose
34) Which of the following would be placed in “f”?
a. DNA or RNA c. polypeptide
b. amino acids d. glucose
Page 1 of 4