BIOD 101 Essential Biology I with Lab Module 1 Questions
and Answers | Verified Solutions with Detailed Rationales
(2026/2027 Edition)
Essential Biology I with Lab Examination
Portage Learning
BIOD 101 – Module 1
2026/2027 Edition
SECTION 1: Foundations of Biology and Characteristics of Life
(6 questions)
Question 1
Which of the following is NOT one of the seven characteristics shared by all living
organisms?
A. Order and structural organization
B. Evolutionary adaptation to the environment
C. Independent origination from nonliving matter
D. Regulation of internal conditions (homeostasis)
Correct Answer: C
Rationale: The seven characteristics of living organisms are: (1) order/organization, (2)
evolutionary adaptation, (3) regulation/homeostasis, (4) energy processing, (5) growth
and development, (6) response to the environment, and (7) reproduction. Option C
describes spontaneous generation, which has been scientifically disproven; all living
cells arise from pre-existing cells according to cell theory. Option A is correct because
living things exhibit hierarchical organization. Option B is correct because populations
evolve through natural selection. Option D is correct because homeostasis maintains
stable internal conditions.
,Question 2
A population of insects develops coloration that closely resembles the leaves in their
forest habitat, making them difficult for predators to detect. This is an example of which
characteristic of life?
A. Response to the environment
B. Evolutionary adaptation
C. Energy processing
D. Growth and development
Correct Answer: B
Rationale: Evolutionary adaptation refers to inherited traits that enhance survival and
reproduction in a specific environment. Camouflage is a classic example of evolutionary
adaptation through natural selection. Option A is incorrect because response to the
environment describes immediate, often reversible reactions to stimuli (e.g., moving
toward light), not inherited structural changes. Option C is incorrect because energy
processing involves acquiring and converting energy (e.g., photosynthesis, cellular
respiration). Option D is incorrect because growth and development refers to systematic
changes in form and function during an organism's life cycle.
Question 3
Which statement accurately distinguishes asexual reproduction from sexual
reproduction?
A. Asexual reproduction requires two parents; sexual reproduction requires only one
parent.
B. Asexual reproduction produces offspring genetically identical to the parent; sexual
reproduction produces genetically diverse offspring.
C. Asexual reproduction always involves gamete formation; sexual reproduction never
involves gametes.
D. Asexual reproduction is found only in prokaryotes; sexual reproduction is found only
in eukaryotes.
Correct Answer: B
Rationale: Asexual reproduction involves a single parent passing all genetic material to
offspring, resulting in clones (genetically identical individuals). Sexual reproduction
, involves two parents contributing gametes (sperm and egg), producing offspring with
genetic variation through recombination. Option A reverses the parental requirements.
Option C is incorrect because gamete formation is characteristic of sexual reproduction,
not asexual. Option D is incorrect because some eukaryotes (e.g., budding yeast, hydra)
reproduce asexually, and prokaryotes primarily reproduce asexually via binary fission.
Question 4
In the hierarchy of biological organization, which level includes all the living organisms
and nonliving physical factors interacting within a defined region?
A. Population
B. Ecosystem
C. Community
D. Organ system
Correct Answer: B
Rationale: An ecosystem consists of all living organisms (biotic factors) and nonliving
physical components (abiotic factors such as water, sunlight, soil) interacting within a
specific area. Option A is incorrect because a population includes only organisms of
one species within defined boundaries. Option C is incorrect because a community
includes all living organisms in an area but excludes nonliving factors. Option D is
incorrect because an organ system is a group of organs working together within a
single organism.
Question 5
Which of the following correctly lists the three domains of life?
A. Bacteria, Archaea, Protista
B. Eubacteria, Archaea, Eukarya
C. Plants, Animals, Fungi
D. Monera, Protista, Eukarya
Correct Answer: B
Rationale: The three-domain system classifies all life into Eubacteria (true bacteria),
Archaea (ancient prokaryotes often in extreme environments), and Eukarya (organisms
and Answers | Verified Solutions with Detailed Rationales
(2026/2027 Edition)
Essential Biology I with Lab Examination
Portage Learning
BIOD 101 – Module 1
2026/2027 Edition
SECTION 1: Foundations of Biology and Characteristics of Life
(6 questions)
Question 1
Which of the following is NOT one of the seven characteristics shared by all living
organisms?
A. Order and structural organization
B. Evolutionary adaptation to the environment
C. Independent origination from nonliving matter
D. Regulation of internal conditions (homeostasis)
Correct Answer: C
Rationale: The seven characteristics of living organisms are: (1) order/organization, (2)
evolutionary adaptation, (3) regulation/homeostasis, (4) energy processing, (5) growth
and development, (6) response to the environment, and (7) reproduction. Option C
describes spontaneous generation, which has been scientifically disproven; all living
cells arise from pre-existing cells according to cell theory. Option A is correct because
living things exhibit hierarchical organization. Option B is correct because populations
evolve through natural selection. Option D is correct because homeostasis maintains
stable internal conditions.
,Question 2
A population of insects develops coloration that closely resembles the leaves in their
forest habitat, making them difficult for predators to detect. This is an example of which
characteristic of life?
A. Response to the environment
B. Evolutionary adaptation
C. Energy processing
D. Growth and development
Correct Answer: B
Rationale: Evolutionary adaptation refers to inherited traits that enhance survival and
reproduction in a specific environment. Camouflage is a classic example of evolutionary
adaptation through natural selection. Option A is incorrect because response to the
environment describes immediate, often reversible reactions to stimuli (e.g., moving
toward light), not inherited structural changes. Option C is incorrect because energy
processing involves acquiring and converting energy (e.g., photosynthesis, cellular
respiration). Option D is incorrect because growth and development refers to systematic
changes in form and function during an organism's life cycle.
Question 3
Which statement accurately distinguishes asexual reproduction from sexual
reproduction?
A. Asexual reproduction requires two parents; sexual reproduction requires only one
parent.
B. Asexual reproduction produces offspring genetically identical to the parent; sexual
reproduction produces genetically diverse offspring.
C. Asexual reproduction always involves gamete formation; sexual reproduction never
involves gametes.
D. Asexual reproduction is found only in prokaryotes; sexual reproduction is found only
in eukaryotes.
Correct Answer: B
Rationale: Asexual reproduction involves a single parent passing all genetic material to
offspring, resulting in clones (genetically identical individuals). Sexual reproduction
, involves two parents contributing gametes (sperm and egg), producing offspring with
genetic variation through recombination. Option A reverses the parental requirements.
Option C is incorrect because gamete formation is characteristic of sexual reproduction,
not asexual. Option D is incorrect because some eukaryotes (e.g., budding yeast, hydra)
reproduce asexually, and prokaryotes primarily reproduce asexually via binary fission.
Question 4
In the hierarchy of biological organization, which level includes all the living organisms
and nonliving physical factors interacting within a defined region?
A. Population
B. Ecosystem
C. Community
D. Organ system
Correct Answer: B
Rationale: An ecosystem consists of all living organisms (biotic factors) and nonliving
physical components (abiotic factors such as water, sunlight, soil) interacting within a
specific area. Option A is incorrect because a population includes only organisms of
one species within defined boundaries. Option C is incorrect because a community
includes all living organisms in an area but excludes nonliving factors. Option D is
incorrect because an organ system is a group of organs working together within a
single organism.
Question 5
Which of the following correctly lists the three domains of life?
A. Bacteria, Archaea, Protista
B. Eubacteria, Archaea, Eukarya
C. Plants, Animals, Fungi
D. Monera, Protista, Eukarya
Correct Answer: B
Rationale: The three-domain system classifies all life into Eubacteria (true bacteria),
Archaea (ancient prokaryotes often in extreme environments), and Eukarya (organisms
