Chapter 1:
The Chemistry of Life
Practice Test
1.
What is the study of the chemistry of living things?
a.
biochemistry
b.
biology
c.
geology
d.
chemistry
Hint
2.
What is an atom or molecule that has acquired a positive or negative charge as a result of gaining or losing electrons?
a.
an ion
b.
an isotope
c.
a cell
d.
a chemical reaction
Hint
3.
What is made up of a sugar called deoxyribose, a nitrogen-containing base, and a phosphate group?
a.
a lipid
b.
a disaccharide
c.
RNA
d.
DNA
Hint
4.
What is the attraction, sharing, or transfer of outer shell electrons from one atom to another?
a.
chemical reaction
b.
chemical bond
c.
activation energy
d.
cells
Hint
5.
Atoms of the same element always have the same number of _______, but they may differ in their number of _______ .
a.
neutrons, electrons
b.
protons, neutrons
c.
protons, electrons
d.
electrons, protons
Hint
6.
What are small molecules that are the building blocks of proteins?
a.
polysaccharides
b.
amino acids
c.
disaccharides
d.
carbohydrates
Hint
7.
What is a subatomic particle with a negative electric charge?
a.
electron
b.
neutron
c.
proton
d.
nucleus
Hint
8.
What are covalent bonds that form between amino acids?
a.
peptide bonds
b.
hydrogen bonds
c.
ionic bonds
d.
chain bonds
Hint
9.
What are the smallest units of water that still retain the essential chemical properties of water?
a.
molecules
b.
atoms
c.
organisms
d.
elements
Hint
10.
What type of molecule is made up of atoms from more than one type of element?
a.
an atom
b.
a compound
c.
hydrogen gas
d.
an element
Hint
