Practice Questions, Correct Answers &
Detailed Rationales | Complete Biology Exam
Review & Study Guide
1. The process of change that has transformed life from its beginnings to the astounding array of
organisms today is called:
A) *Evolution
B) Biology
C) Emergent properties
D) Reductionism
Answer: A
Rationale: Evolution is the process of change that has transformed life over time.
2. The scientific study of life is called:
A) Evolution
B) *Biology
C) Emergent properties
D) Reductionism
Answer: B
Rationale: Biology is the scientific study of life.
3. New properties that arise with each step upward in the hierarchy of life, owing to the
arrangement and interactions of parts as complexity increases, are called:
A) Evolution
,B) Biology
C) *Emergent properties
D) Reductionism
Answer: C
Rationale: Emergent properties arise from the arrangement and interactions of parts.
4. The approach of reducing complex systems to simpler components that are more manageable
to study is called:
A) Evolution
B) Biology
C) Emergent properties
D) *Reductionism
Answer: D
Rationale: Reductionism reduces complex systems to simpler components.
5. An approach to studying biology that aims to model the dynamic behavior of whole biological
systems based on a study of the interactions among the system's parts is called:
A) *Systems biology
B) Reductionism
C) Emergent properties
D) Evolution
Answer: A
Rationale: Systems biology models whole biological systems.
6. The smallest unit of organization that can perform all required activities is the:
A) Atom
B) Molecule
C) *Cell
,D) Tissue
Answer: C
Rationale: The cell is the smallest unit that can perform all required activities.
7. A type of cell lacking a membrane-enclosed nucleus and membrane-enclosed organelles is
called:
A) *Prokaryotic cell
B) Eukaryotic cell
C) Plant cell
D) Animal cell
Answer: A
Rationale: Prokaryotic cells lack a membrane-enclosed nucleus and organelles.
8. A type of cell with a membrane-enclosed nucleus and membrane-enclosed organelles is called:
A) Prokaryotic cell
B) *Eukaryotic cell
C) Bacterial cell
D) Archaeal cell
Answer: B
Rationale: Eukaryotic cells have a membrane-enclosed nucleus and organelles.
9. A nucleic acid molecule, usually a double-stranded helix, in which each polynucleotide strand
consists of nucleotide monomers with a deoxyribose sugar and the nitrogenous bases adenine (A),
cytosine (C), guanine (G), and thymine (T) is called:
A) RNA
B) *DNA
C) Protein
D) Carbohydrate
, Answer: B
Rationale: DNA is a double-stranded helix with deoxyribose and bases A, C, G, T.
10. A discrete unit of hereditary information consisting of a specific nucleotide sequence in DNA is
called a:
A) Chromosome
B) *Gene
C) Allele
D) Genome
Answer: B
Rationale: A gene is a discrete unit of hereditary information.
11. The process by which information encoded in DNA directs the synthesis of proteins or, in some
cases, RNAs that are not translated into proteins and instead function as RNAs is called:
A) Replication
B) Transcription
C) *Gene expression
D) Translation
Answer: C
Rationale: Gene expression is the process by which DNA directs protein synthesis.
12. The use of computers, software, and mathematical models to process and integrate biological
information from large data sets is called:
A) *Bioinformatics
B) Systems biology
C) Genomics
D) Proteomics
Answer: A