BIOD 101 Module 1–6 & Final Exam –
2026/2027 | Portage Learning |
Complete Verified Q&As + Review
Guide
Module 1: Scientific Method, Chemistry of Life
1. What is a testable prediction called?
• A. Theory
• B. Hypothesis
• C. Law
• D. Observation
• Correct Answer: B
• Rationale: A hypothesis is a testable, falsifiable prediction about a
relationship between variables.
2. In an experiment, the variable that is manipulated is the:
• A. Dependent variable
• B. Control variable
• C. Independent variable
• D. Confounding variable
• Correct Answer: C
• Rationale: The independent variable is changed by the researcher to
observe its effect.
,3. A control group is used to:
• A. Receive the experimental treatment
• B. Provide a baseline for comparison
• C. Increase the sample size
• D. Eliminate all variables
• Correct Answer: B
• Rationale: The control group does not receive the treatment, allowing
comparison with the experimental group.
4. A well-supported explanation that has been repeatedly tested is a:
• A. Hypothesis
• B. Theory
• C. Guess
• D. Law
• Correct Answer: B
• Rationale: A scientific theory is a broad, well-supported explanation
based on extensive evidence.
5. Maintaining a stable internal environment is called:
• A. Metabolism
• B. Homeostasis
• C. Evolution
• D. Reproduction
• Correct Answer: B
• Rationale: Homeostasis regulates internal conditions such as
temperature and pH.
,6. Water molecules sticking to each other is called:
• A. Adhesion
• B. Cohesion
• C. Solvency
• D. Hydrolysis
• Correct Answer: B
• Rationale: Cohesion is attraction between like molecules, such as water
to water.
7. A solution with a pH of 3 is:
• A. Neutral
• B. Basic
• C. Acidic
• D. Alkaline
• Correct Answer: C
• Rationale: pH below 7 is acidic; pH 7 is neutral; pH above 7 is basic.
8. The monomer of proteins is:
• A. Monosaccharide
• B. Amino acid
• C. Nucleotide
• D. Fatty acid
• Correct Answer: B
• Rationale: Proteins are polymers made of amino acid monomers.
9. The monomer of carbohydrates is:
, • A. Amino acid
• B. Monosaccharide
• C. Nucleotide
• D. Glycerol
• Correct Answer: B
• Rationale: Carbohydrates are composed of monosaccharides such as
glucose.
10. A major function of lipids is:
• A. Genetic information storage
• B. Enzyme catalysis
• C. Long-term energy storage
• D. Oxygen transport
• Correct Answer: C
• Rationale: Lipids store energy efficiently and also form cell membranes.
11. The monomer of nucleic acids is:
• A. Nucleotide
• B. Amino acid
• C. Monosaccharide
• D. Fatty acid
• Correct Answer: A
• Rationale: DNA and RNA are polymers of nucleotides.
12. Dehydration synthesis is a reaction that:
• A. Adds water to break bonds
2026/2027 | Portage Learning |
Complete Verified Q&As + Review
Guide
Module 1: Scientific Method, Chemistry of Life
1. What is a testable prediction called?
• A. Theory
• B. Hypothesis
• C. Law
• D. Observation
• Correct Answer: B
• Rationale: A hypothesis is a testable, falsifiable prediction about a
relationship between variables.
2. In an experiment, the variable that is manipulated is the:
• A. Dependent variable
• B. Control variable
• C. Independent variable
• D. Confounding variable
• Correct Answer: C
• Rationale: The independent variable is changed by the researcher to
observe its effect.
,3. A control group is used to:
• A. Receive the experimental treatment
• B. Provide a baseline for comparison
• C. Increase the sample size
• D. Eliminate all variables
• Correct Answer: B
• Rationale: The control group does not receive the treatment, allowing
comparison with the experimental group.
4. A well-supported explanation that has been repeatedly tested is a:
• A. Hypothesis
• B. Theory
• C. Guess
• D. Law
• Correct Answer: B
• Rationale: A scientific theory is a broad, well-supported explanation
based on extensive evidence.
5. Maintaining a stable internal environment is called:
• A. Metabolism
• B. Homeostasis
• C. Evolution
• D. Reproduction
• Correct Answer: B
• Rationale: Homeostasis regulates internal conditions such as
temperature and pH.
,6. Water molecules sticking to each other is called:
• A. Adhesion
• B. Cohesion
• C. Solvency
• D. Hydrolysis
• Correct Answer: B
• Rationale: Cohesion is attraction between like molecules, such as water
to water.
7. A solution with a pH of 3 is:
• A. Neutral
• B. Basic
• C. Acidic
• D. Alkaline
• Correct Answer: C
• Rationale: pH below 7 is acidic; pH 7 is neutral; pH above 7 is basic.
8. The monomer of proteins is:
• A. Monosaccharide
• B. Amino acid
• C. Nucleotide
• D. Fatty acid
• Correct Answer: B
• Rationale: Proteins are polymers made of amino acid monomers.
9. The monomer of carbohydrates is:
, • A. Amino acid
• B. Monosaccharide
• C. Nucleotide
• D. Glycerol
• Correct Answer: B
• Rationale: Carbohydrates are composed of monosaccharides such as
glucose.
10. A major function of lipids is:
• A. Genetic information storage
• B. Enzyme catalysis
• C. Long-term energy storage
• D. Oxygen transport
• Correct Answer: C
• Rationale: Lipids store energy efficiently and also form cell membranes.
11. The monomer of nucleic acids is:
• A. Nucleotide
• B. Amino acid
• C. Monosaccharide
• D. Fatty acid
• Correct Answer: A
• Rationale: DNA and RNA are polymers of nucleotides.
12. Dehydration synthesis is a reaction that:
• A. Adds water to break bonds
