WGU C190 Introduction to Biology Comprehensive Final
Review 2026 | 100% Accurate Answers
1. What does the theory of evolution primarily address regarding life on Earth?
How and why life changes over time.
The origin of life from non-living matter.
The structure of cellular components.
The classification of living organisms.
2. If a biologist is investigating the effects of a new fertilizer on plant growth,
what aspect of scientific inquiry are they employing?
Making observations without a hypothesis
Only conducting experiments
Asking and answering questions
Ignoring previous research findings
3. What are the two main types of gametes in sexual reproduction?
Muscle cells and epithelial cells
Neurons and glial cells
Red blood cells and white blood cells
Sperm cells and egg cells
4. Which of the following best characterizes a hydrogen bond?
It is a weak and temporary electrical attraction between two polar
molecules.
, It is a strong chemical bond formed by the sharing of valence
electrons.
It is formed only between different molecules (intermolecular).
5. Which of the following explains the meaning of scientific inquiry? --Scientific
inquiry is the ongoing process of discovery in science
The process of scientific inquiry refers to the diverse ways in which
scientists study the natural world and proposes explanations based
on evidence
The goal of scientific inquiry is to understand the natural world
None of the above
All of the above
6. The carrier molecule delivers high-energy electrons to the series of enzymes
called the ______. As the electrons pass along these enzymes, their energy is
used to make __ _.
electron transport chain; ATP
electron acid cycle; acetyl CoA
citric acid cycle; electron
7. What is exocytosis?
a secretory vesicle fuses with the plasma membrane to release its
content out of the cell
is the process where molecules are released from the cell
the process by which material is exported out of the cell
all of the above
,8. What does the term homeostasis refer to in biological systems?
The process of cellular respiration.
The mechanism of genetic inheritance.
The organization of life into ecosystems.
The ability to maintain a stable internal environment.
9. A molecule is defined as
a chemical structure consisting of at least two atoms held together
by chemical bonds
the combination of hydrogen and oxygen to form water
a reaction between two elements
comprised of smaller units called monomers
10. Describe the role of tissues in the organization of living organisms.
Tissues are collections of organs that perform a single function.
Tissues are the smallest units of life that can exist on their own.
Tissues are individual cells that function independently within an
organism.
Tissues are groups of similar cells that work together to perform
specific functions, contributing to the overall structure and function
of organs.
11. Describe the nature of a hydrogen bond and its significance in biological
systems.
A hydrogen bond is a strong attraction that forms between two
hydrogen atoms, essential for energy production.
, A hydrogen bond is a permanent bond that holds molecules together
in a solid state.
A hydrogen bond is a weak attraction between a hydrogen atom
and another atom, which plays a crucial role in maintaining the
structure of proteins and nucleic acids.
A hydrogen bond is an ionic interaction that occurs between charged
particles.
12. What is a covalent bond?
a bond in which an electron is transferred from one atom's valence
shell to another's valence shell
a bond in which electrons are shared between the valence shells of
two atoms
a bond in which two atoms are attracted to each other by their
positive and negative charges
13. What are protons?
positively charged particles.
proactive particles.
negatively charged particles.
uncharged particles.
14. If a cell's nuclear envelope is damaged, what potential impact could this
have on cellular function?
It would enhance the cell's ability to divide more rapidly.
It could disrupt the regulation of genetic material and affect
protein synthesis.
Review 2026 | 100% Accurate Answers
1. What does the theory of evolution primarily address regarding life on Earth?
How and why life changes over time.
The origin of life from non-living matter.
The structure of cellular components.
The classification of living organisms.
2. If a biologist is investigating the effects of a new fertilizer on plant growth,
what aspect of scientific inquiry are they employing?
Making observations without a hypothesis
Only conducting experiments
Asking and answering questions
Ignoring previous research findings
3. What are the two main types of gametes in sexual reproduction?
Muscle cells and epithelial cells
Neurons and glial cells
Red blood cells and white blood cells
Sperm cells and egg cells
4. Which of the following best characterizes a hydrogen bond?
It is a weak and temporary electrical attraction between two polar
molecules.
, It is a strong chemical bond formed by the sharing of valence
electrons.
It is formed only between different molecules (intermolecular).
5. Which of the following explains the meaning of scientific inquiry? --Scientific
inquiry is the ongoing process of discovery in science
The process of scientific inquiry refers to the diverse ways in which
scientists study the natural world and proposes explanations based
on evidence
The goal of scientific inquiry is to understand the natural world
None of the above
All of the above
6. The carrier molecule delivers high-energy electrons to the series of enzymes
called the ______. As the electrons pass along these enzymes, their energy is
used to make __ _.
electron transport chain; ATP
electron acid cycle; acetyl CoA
citric acid cycle; electron
7. What is exocytosis?
a secretory vesicle fuses with the plasma membrane to release its
content out of the cell
is the process where molecules are released from the cell
the process by which material is exported out of the cell
all of the above
,8. What does the term homeostasis refer to in biological systems?
The process of cellular respiration.
The mechanism of genetic inheritance.
The organization of life into ecosystems.
The ability to maintain a stable internal environment.
9. A molecule is defined as
a chemical structure consisting of at least two atoms held together
by chemical bonds
the combination of hydrogen and oxygen to form water
a reaction between two elements
comprised of smaller units called monomers
10. Describe the role of tissues in the organization of living organisms.
Tissues are collections of organs that perform a single function.
Tissues are the smallest units of life that can exist on their own.
Tissues are individual cells that function independently within an
organism.
Tissues are groups of similar cells that work together to perform
specific functions, contributing to the overall structure and function
of organs.
11. Describe the nature of a hydrogen bond and its significance in biological
systems.
A hydrogen bond is a strong attraction that forms between two
hydrogen atoms, essential for energy production.
, A hydrogen bond is a permanent bond that holds molecules together
in a solid state.
A hydrogen bond is a weak attraction between a hydrogen atom
and another atom, which plays a crucial role in maintaining the
structure of proteins and nucleic acids.
A hydrogen bond is an ionic interaction that occurs between charged
particles.
12. What is a covalent bond?
a bond in which an electron is transferred from one atom's valence
shell to another's valence shell
a bond in which electrons are shared between the valence shells of
two atoms
a bond in which two atoms are attracted to each other by their
positive and negative charges
13. What are protons?
positively charged particles.
proactive particles.
negatively charged particles.
uncharged particles.
14. If a cell's nuclear envelope is damaged, what potential impact could this
have on cellular function?
It would enhance the cell's ability to divide more rapidly.
It could disrupt the regulation of genetic material and affect
protein synthesis.
