BSCS Biology: A Molecular Approach

Chapter 1: The Chemistry of Life

Chapter Test

1.
What is the smallest unit of an element that retains the essential chemical properties of that element?
A)substance
B)molecule
C)atom
D)subatomic particle
2.
How is the number of atoms in an element indicated in formulas?
A)the superscript number after each element
B)the superscript number before each element
C)the subscript number after each element
D)the subscript number before each element
3.
What is the relationship between the number of protons and electrons in a neutral atom?
A)There are twice as many protons as electrons.
B)There are an equal number of protons and electrons.
C)There are twice as many electrons as protons.
D)When added together, the number of protons and electrons equals the number of neutrons.
4.
A ____ is formed when two atoms share one or more pairs of electrons.
A)covalent bond
B)ionic bond
C)hydrogen bond
D)polar bond
5.
When a solution has more hydrogen ions than hydroxide ions, it is considered ____.
A)neutral
B)ionized
C)basic
D)acidic
6.
What type of carbohydrate is sucrose, or table sugar?
A)monosaccharide
B)disaccharide
C)polysaccharide
D)complex carbohydrate
7.
Which type of macromolecule provides long-term storage of energy and carbon?
A)carbohydrates
B)proteins
C)lipids
D)nucleic acids
8.
What determines the function of a protein?
A)its primary structure
B)its secondary structure
C)its tertiary structure
D)its hydrophobicity
9.
What macromolecule is shared by RNA and DNA?
A)nucleic acids
B)amino acids
C)lipids
D)phosphates
10.
What is the complementary DNA sequence to a GGA codon?
A)AAG
B)CCT
C)TTC
D)AAT
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe

Please read our Terms of Use and Privacy Policy before you explore our Web site. To report a technical problem with this Web site, please contact the Web Producer.