2026 BIOD 101 Module 1 Final Exam – 2026 | Portage Learning | Complete Verified Q&As
+ Review Guide
1. Which of the following is the first step in the scientific method?
A. Hypothesis
B. Observation
C. Experimentation
D. Conclusion
Rationale: Observation is the initial spark where a researcher notices a phenomenon
before asking a question or forming a hypothesis.
2. An atom with a different number of neutrons than protons is called a(n):
A. Ion
B. Isotope
C. Molecule
D. Compound
Rationale: Isotopes are variants of a particular chemical element which differ in
neutron number.
3. Which subatomic particle determines the identity of an element?
A. Proton
B. Neutron
C. Electron
D. Positron
Rationale: The number of protons (atomic number) is unique to each element and
defines its identity.
4. A substance consisting of two or more different elements chemically bonded
together is a:
A. Mixture
B. Compound
C. Isotope
D. Colloid
Rationale: A compound is a distinct substance containing two or more elements in a
fixed ratio.
5. What type of bond is formed by the attraction between a slightly positive
hydrogen atom and a slightly negative atom?
2026 Question And ANSWER Latest Update
, A. Ionic
B. Covalent
C. Hydrogen
D. Metallic
Rationale: Hydrogen bonds are weak intermolecular attractions occurring between a
hydrogen atom and an electronegative atom.
6. Which level of biological organization is defined as a group of similar cells
working together?
A. Organ
B. Tissue
C. Organelle
D. Population
Rationale: Tissues are groups of cells with a similar structure and function.
7. In a neutral atom, the number of protons is equal to the number of:
A. Neutrons
B. Electrons
C. Quarks
D. Nuclei
Rationale: For an atom to be electrically neutral, positive protons must be balanced
by negative electrons.
8. Which of the following is an example of a chemical change?
A. Ice melting
B. Iron rusting
C. Paper tearing
D. Sugar dissolving
Rationale: Rusting is a chemical reaction (oxidation) that results in a new substance.
9. The valence shell of an atom refers to its:
A. Inner shell
B. Outermost shell
C. Nucleus
D. Orbital path of neutrons
Rationale: The valence shell is the outermost electron shell and determines chemical
reactivity.
10. What is the pH of a neutral solution at 25°C?
A. 0
B. 7
2026 Question And ANSWER Latest Update
+ Review Guide
1. Which of the following is the first step in the scientific method?
A. Hypothesis
B. Observation
C. Experimentation
D. Conclusion
Rationale: Observation is the initial spark where a researcher notices a phenomenon
before asking a question or forming a hypothesis.
2. An atom with a different number of neutrons than protons is called a(n):
A. Ion
B. Isotope
C. Molecule
D. Compound
Rationale: Isotopes are variants of a particular chemical element which differ in
neutron number.
3. Which subatomic particle determines the identity of an element?
A. Proton
B. Neutron
C. Electron
D. Positron
Rationale: The number of protons (atomic number) is unique to each element and
defines its identity.
4. A substance consisting of two or more different elements chemically bonded
together is a:
A. Mixture
B. Compound
C. Isotope
D. Colloid
Rationale: A compound is a distinct substance containing two or more elements in a
fixed ratio.
5. What type of bond is formed by the attraction between a slightly positive
hydrogen atom and a slightly negative atom?
2026 Question And ANSWER Latest Update
, A. Ionic
B. Covalent
C. Hydrogen
D. Metallic
Rationale: Hydrogen bonds are weak intermolecular attractions occurring between a
hydrogen atom and an electronegative atom.
6. Which level of biological organization is defined as a group of similar cells
working together?
A. Organ
B. Tissue
C. Organelle
D. Population
Rationale: Tissues are groups of cells with a similar structure and function.
7. In a neutral atom, the number of protons is equal to the number of:
A. Neutrons
B. Electrons
C. Quarks
D. Nuclei
Rationale: For an atom to be electrically neutral, positive protons must be balanced
by negative electrons.
8. Which of the following is an example of a chemical change?
A. Ice melting
B. Iron rusting
C. Paper tearing
D. Sugar dissolving
Rationale: Rusting is a chemical reaction (oxidation) that results in a new substance.
9. The valence shell of an atom refers to its:
A. Inner shell
B. Outermost shell
C. Nucleus
D. Orbital path of neutrons
Rationale: The valence shell is the outermost electron shell and determines chemical
reactivity.
10. What is the pH of a neutral solution at 25°C?
A. 0
B. 7
2026 Question And ANSWER Latest Update
