2026 BIOD 101: 150-Question Ultimate Comprehensive Final Exam
(Comprehensive Mock Final)
1. Which subatomic particle defines the atomic number of an
element?
A. Electron
B. Proton
C. Neutron
D. Positron
Rationale: The number of protons is unique to each element and
determines its identity.
2. An atom that has lost an electron and carries a positive charge is
a(n):
A. Anion
B. Cation
C. Isotope
D. Molecule
Rationale: Cations are "Paw-sitive" (lost an electron); Anions are negative
(gained one).
3. What type of bond involves the unequal sharing of electrons
between atoms?
A. Nonpolar covalent
B. Polar covalent
C. Ionic
D. Hydrogen
Rationale: In polar covalent bonds, one atom is more electronegative
and pulls electrons closer to itself.
4. A solution with a pH of 3 is ________ times more acidic than a
solution with a pH of 5.
A. 2
B. 20
C. 100
,D. 1000
Rationale: Each pH unit is a 10x difference. 10 x 10 = 100.
5. Which property of water allows it to move upward through a plant's
stem?
A. High specific heat
B. Cohesion and Adhesion
C. Density
D. Solvent ability
Rationale: Cohesion (water to water) and Adhesion (water to surface)
allow for capillary action.
6. Which functional group is represented by -NH2?
A. Hydroxyl
B. Carboxyl
C. Amino
D. Phosphate
Rationale: The Amino group is a nitrogen atom bonded to two hydrogen
atoms.
7. Which process links monomers to form polymers by removing a
water molecule?
A. Hydrolysis
B. Dehydration Synthesis
C. Oxidation
D. Reduction
Rationale: Dehydration "removes water" to synthesize a larger molecule.
8. Which organelle is responsible for packaging and shipping
proteins?
A. Ribosome
B. Golgi Apparatus
C. Lysosome
D. Mitochondria
Rationale: The Golgi acts as the "Post Office" of the cell.
9. Prokaryotic cells lack which of the following?
A. DNA
B. Ribosomes
C. Membrane-bound nucleus
D. Plasma membrane
, Rationale: Prokaryotes (bacteria) do not have a defined nucleus or
organelles.
10. Which organelle contains its own DNA and is inherited
maternally?
A. Nucleus
B. Mitochondria
C. Chloroplast
D. Rough ER
Rationale: Mitochondria have their own genome and are passed from the
mother's egg.
11. The plasma membrane is primarily composed of:
A. Proteins only
B. Phospholipid bilayer
C. Cellulose
D. Chitin
Rationale: The bilayer creates a semi-permeable barrier for the cell.
12. Simple diffusion is a form of ________ transport.
A. Passive
B. Active
C. Endocytic
D. Exocytic
Rationale: Passive transport requires no energy and moves down a
gradient.
13. A cell placed in a hypotonic solution will likely:
A. Shrink
B. Swell and burst
C. Stay the same
D. Divide
Rationale: Water moves into the cell where solute concentration is higher
(Hypo = Low outside).
14. Active transport requires which molecule for energy?
A. Glucose
B. ATP
C. DNA
D. Oxygen
Rationale: ATP provides the "fuel" to move molecules against a gradient.
(Comprehensive Mock Final)
1. Which subatomic particle defines the atomic number of an
element?
A. Electron
B. Proton
C. Neutron
D. Positron
Rationale: The number of protons is unique to each element and
determines its identity.
2. An atom that has lost an electron and carries a positive charge is
a(n):
A. Anion
B. Cation
C. Isotope
D. Molecule
Rationale: Cations are "Paw-sitive" (lost an electron); Anions are negative
(gained one).
3. What type of bond involves the unequal sharing of electrons
between atoms?
A. Nonpolar covalent
B. Polar covalent
C. Ionic
D. Hydrogen
Rationale: In polar covalent bonds, one atom is more electronegative
and pulls electrons closer to itself.
4. A solution with a pH of 3 is ________ times more acidic than a
solution with a pH of 5.
A. 2
B. 20
C. 100
,D. 1000
Rationale: Each pH unit is a 10x difference. 10 x 10 = 100.
5. Which property of water allows it to move upward through a plant's
stem?
A. High specific heat
B. Cohesion and Adhesion
C. Density
D. Solvent ability
Rationale: Cohesion (water to water) and Adhesion (water to surface)
allow for capillary action.
6. Which functional group is represented by -NH2?
A. Hydroxyl
B. Carboxyl
C. Amino
D. Phosphate
Rationale: The Amino group is a nitrogen atom bonded to two hydrogen
atoms.
7. Which process links monomers to form polymers by removing a
water molecule?
A. Hydrolysis
B. Dehydration Synthesis
C. Oxidation
D. Reduction
Rationale: Dehydration "removes water" to synthesize a larger molecule.
8. Which organelle is responsible for packaging and shipping
proteins?
A. Ribosome
B. Golgi Apparatus
C. Lysosome
D. Mitochondria
Rationale: The Golgi acts as the "Post Office" of the cell.
9. Prokaryotic cells lack which of the following?
A. DNA
B. Ribosomes
C. Membrane-bound nucleus
D. Plasma membrane
, Rationale: Prokaryotes (bacteria) do not have a defined nucleus or
organelles.
10. Which organelle contains its own DNA and is inherited
maternally?
A. Nucleus
B. Mitochondria
C. Chloroplast
D. Rough ER
Rationale: Mitochondria have their own genome and are passed from the
mother's egg.
11. The plasma membrane is primarily composed of:
A. Proteins only
B. Phospholipid bilayer
C. Cellulose
D. Chitin
Rationale: The bilayer creates a semi-permeable barrier for the cell.
12. Simple diffusion is a form of ________ transport.
A. Passive
B. Active
C. Endocytic
D. Exocytic
Rationale: Passive transport requires no energy and moves down a
gradient.
13. A cell placed in a hypotonic solution will likely:
A. Shrink
B. Swell and burst
C. Stay the same
D. Divide
Rationale: Water moves into the cell where solute concentration is higher
(Hypo = Low outside).
14. Active transport requires which molecule for energy?
A. Glucose
B. ATP
C. DNA
D. Oxygen
Rationale: ATP provides the "fuel" to move molecules against a gradient.
