BIOD 101 MODULE 1 TO 6 ACTUAL
EXAM 2026 WITH REAL QUESTIONS
AND WELL-VERIFIED CORRECT
ANSWERS | DETAILED RATIONALES
AND MCQS | ALREADY GRADED A+ |
GUARANTEED SUCCESS | BIOD 101
MODULE EXAM 2026 [LATEST UPDATE]
QUESTION 1
Which characteristic distinguishes living organisms from non-living matter?
A. Movement
B. Cellular organization
C. Size
D. Color
Answer: B. Cellular organization
Rationale:
Living organisms are composed of one or more cells, which is the fundamental
unit of life.
A is incorrect because non-living things (e.g., rivers) can move.
C is incorrect because size does not define life.
D is incorrect because color is not a defining property of life.
,QUESTION 2
The basic unit of life is the:
A. Atom
B. Tissue
C. Cell
D. Organ
Answer: C. Cell
Rationale:
Cells are the smallest structural and functional units of life.
A is incorrect because atoms are chemical units, not living units.
B and D are higher levels of biological organization composed of cells.
QUESTION 3
Which macromolecule is primarily responsible for storing genetic information?
A. Carbohydrates
B. Lipids
C. Proteins
D. Nucleic acids
Answer: D. Nucleic acids
Rationale:
DNA and RNA store and transmit genetic information.
A provides energy.
B stores long-term energy and forms membranes.
C functions mainly as enzymes and structural components.
QUESTION 4
Which organelle is responsible for ATP production in eukaryotic cells?
,A. Nucleus
B. Ribosome
C. Mitochondrion
D. Golgi apparatus
Answer: C. Mitochondrion
Rationale:
Mitochondria generate ATP via cellular respiration.
A controls genetic material.
B synthesizes proteins.
D modifies and packages proteins.
QUESTION 5
Water is considered a polar molecule because:
A. It is neutral
B. It forms hydrogen bonds
C. It has unequal charge distribution
D. It dissolves salt
Answer: C. It has unequal charge distribution
Rationale:
Polarity arises from unequal sharing of electrons between oxygen and hydrogen.
B is a consequence of polarity, not the cause.
A and D do not define polarity.
QUESTION 6
The pH scale measures:
A. Temperature
B. Oxygen concentration
C. Acidity and alkalinity
D. Salinity
, Answer: C. Acidity and alkalinity
Rationale:
pH measures hydrogen ion concentration.
A, B, and D measure different environmental variables.
QUESTION 7
Which bond involves the sharing of electrons?
A. Ionic bond
B. Hydrogen bond
C. Covalent bond
D. Metallic bond
Answer: C. Covalent bond
Rationale:
Covalent bonds share electrons.
A involves electron transfer.
B is a weak intermolecular attraction.
D is not typical in biological systems.
QUESTION 8
Which structure regulates what enters and exits the cell?
A. Nucleus
B. Cell membrane
C. Cytoplasm
D. Lysosome
Answer: B. Cell membrane
Rationale:
The plasma membrane is selectively permeable.
A stores DNA.
EXAM 2026 WITH REAL QUESTIONS
AND WELL-VERIFIED CORRECT
ANSWERS | DETAILED RATIONALES
AND MCQS | ALREADY GRADED A+ |
GUARANTEED SUCCESS | BIOD 101
MODULE EXAM 2026 [LATEST UPDATE]
QUESTION 1
Which characteristic distinguishes living organisms from non-living matter?
A. Movement
B. Cellular organization
C. Size
D. Color
Answer: B. Cellular organization
Rationale:
Living organisms are composed of one or more cells, which is the fundamental
unit of life.
A is incorrect because non-living things (e.g., rivers) can move.
C is incorrect because size does not define life.
D is incorrect because color is not a defining property of life.
,QUESTION 2
The basic unit of life is the:
A. Atom
B. Tissue
C. Cell
D. Organ
Answer: C. Cell
Rationale:
Cells are the smallest structural and functional units of life.
A is incorrect because atoms are chemical units, not living units.
B and D are higher levels of biological organization composed of cells.
QUESTION 3
Which macromolecule is primarily responsible for storing genetic information?
A. Carbohydrates
B. Lipids
C. Proteins
D. Nucleic acids
Answer: D. Nucleic acids
Rationale:
DNA and RNA store and transmit genetic information.
A provides energy.
B stores long-term energy and forms membranes.
C functions mainly as enzymes and structural components.
QUESTION 4
Which organelle is responsible for ATP production in eukaryotic cells?
,A. Nucleus
B. Ribosome
C. Mitochondrion
D. Golgi apparatus
Answer: C. Mitochondrion
Rationale:
Mitochondria generate ATP via cellular respiration.
A controls genetic material.
B synthesizes proteins.
D modifies and packages proteins.
QUESTION 5
Water is considered a polar molecule because:
A. It is neutral
B. It forms hydrogen bonds
C. It has unequal charge distribution
D. It dissolves salt
Answer: C. It has unequal charge distribution
Rationale:
Polarity arises from unequal sharing of electrons between oxygen and hydrogen.
B is a consequence of polarity, not the cause.
A and D do not define polarity.
QUESTION 6
The pH scale measures:
A. Temperature
B. Oxygen concentration
C. Acidity and alkalinity
D. Salinity
, Answer: C. Acidity and alkalinity
Rationale:
pH measures hydrogen ion concentration.
A, B, and D measure different environmental variables.
QUESTION 7
Which bond involves the sharing of electrons?
A. Ionic bond
B. Hydrogen bond
C. Covalent bond
D. Metallic bond
Answer: C. Covalent bond
Rationale:
Covalent bonds share electrons.
A involves electron transfer.
B is a weak intermolecular attraction.
D is not typical in biological systems.
QUESTION 8
Which structure regulates what enters and exits the cell?
A. Nucleus
B. Cell membrane
C. Cytoplasm
D. Lysosome
Answer: B. Cell membrane
Rationale:
The plasma membrane is selectively permeable.
A stores DNA.
