PCB 3023 CHAPTERS 1 & 2 EXAM
QUESTIONS AND ANSWERS GRADED A+
2026
Identify the eukaryotic cellular locations of the fundamental processes that are involved in the
central dogma of molecular biology by dragging the correct labels to their targets. -
ANS Transcription - Nucleus
Translation - Cytoplasm
Identify the three fundamental processes that are involved in the central dogma of molecular
biology by dragging the three labels to their targets. - ANS DNA - replication
RNA - Transcription
Protein - Translation
Is the following statement true, false, or impossible to determine?
Organisms that have inherited their genetic instructions from a common ancestor share the
same DNA sequence. - ANS False
Which is not a function of proteins?
Choose one:
A. catalyzing biochemical reactions
B. encoding genetic information
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1
,C. acting as molecular motors
D. encasing certain viruses
E. providing cells with structural support - ANS B. encoding genetic information
Genetic changes followed by selection are best described as the fundamentals of what process?
Choose one:
A. evolution
B. reproduction
C. DNA replication
D. genetic drift
E. regeneration - ANS A. evolution
Which statement represents the cell theory? Choose one: A. All cells are formed by the growth
and division of existing cells.
B. All cells resemble square or rectangular chambers.
C. All cells can be seen using a microscope.
D. All cells contain DNA.
E. All cells require a continual input of energy to sustain life. - ANS A. All cells are formed by
the growth and division of existing cells.
Is the following statement true, false, or impossible to determine? An organism that can survive
life in a hydrothermal vent at the bottom of the ocean can thrive anywhere.Choose one:
A. true
B. false
C. impossible to determine - ANS False
Antibiotics tend to target features that are unique to bacterial cells and absent from eukaryotic
cells such as our own. Which of the following would present a safe target for a new antibiotic?
Choose one:
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2
, A. cell wall
B. nuclear envelope
C. plasma membrane
D. endoplasmic reticulum
E. intermediate filaments - ANS A. cell wall
Is the following statement true, false, or impossible to determine? One thing all cells have in
common is an ability to colonize any environment on Earth. Choose one:
true
false
impossible to determine - ANS False
What organisms commonly colonize the hot acid of volcanic springs, the airless depths of
marine sediments, the sludge of sewage treatment plants, the pools beneath the frozen surface
of Antarctica, as well as the acidic, oxygen-free environment of a cow's stomach where they
break down ingested cellulose and generate methane gas?Choose one:
A. eukaryotes
B. bacteria
C. archaea
D. all of these - ANS C. archaea
Which of the following are prokaryotes?
Choose one:
A. bacteria and fungi
B. viruses and microbes
C. monotremes and prototheria
D. archaea and bacteria
E. archaea and protozoans - ANS D. archaea and bacteria
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3
QUESTIONS AND ANSWERS GRADED A+
2026
Identify the eukaryotic cellular locations of the fundamental processes that are involved in the
central dogma of molecular biology by dragging the correct labels to their targets. -
ANS Transcription - Nucleus
Translation - Cytoplasm
Identify the three fundamental processes that are involved in the central dogma of molecular
biology by dragging the three labels to their targets. - ANS DNA - replication
RNA - Transcription
Protein - Translation
Is the following statement true, false, or impossible to determine?
Organisms that have inherited their genetic instructions from a common ancestor share the
same DNA sequence. - ANS False
Which is not a function of proteins?
Choose one:
A. catalyzing biochemical reactions
B. encoding genetic information
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
1
,C. acting as molecular motors
D. encasing certain viruses
E. providing cells with structural support - ANS B. encoding genetic information
Genetic changes followed by selection are best described as the fundamentals of what process?
Choose one:
A. evolution
B. reproduction
C. DNA replication
D. genetic drift
E. regeneration - ANS A. evolution
Which statement represents the cell theory? Choose one: A. All cells are formed by the growth
and division of existing cells.
B. All cells resemble square or rectangular chambers.
C. All cells can be seen using a microscope.
D. All cells contain DNA.
E. All cells require a continual input of energy to sustain life. - ANS A. All cells are formed by
the growth and division of existing cells.
Is the following statement true, false, or impossible to determine? An organism that can survive
life in a hydrothermal vent at the bottom of the ocean can thrive anywhere.Choose one:
A. true
B. false
C. impossible to determine - ANS False
Antibiotics tend to target features that are unique to bacterial cells and absent from eukaryotic
cells such as our own. Which of the following would present a safe target for a new antibiotic?
Choose one:
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
2
, A. cell wall
B. nuclear envelope
C. plasma membrane
D. endoplasmic reticulum
E. intermediate filaments - ANS A. cell wall
Is the following statement true, false, or impossible to determine? One thing all cells have in
common is an ability to colonize any environment on Earth. Choose one:
true
false
impossible to determine - ANS False
What organisms commonly colonize the hot acid of volcanic springs, the airless depths of
marine sediments, the sludge of sewage treatment plants, the pools beneath the frozen surface
of Antarctica, as well as the acidic, oxygen-free environment of a cow's stomach where they
break down ingested cellulose and generate methane gas?Choose one:
A. eukaryotes
B. bacteria
C. archaea
D. all of these - ANS C. archaea
Which of the following are prokaryotes?
Choose one:
A. bacteria and fungi
B. viruses and microbes
C. monotremes and prototheria
D. archaea and bacteria
E. archaea and protozoans - ANS D. archaea and bacteria
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
3
