BMD 252 - Exam 1 Questions &
Correct Answers|| Graded A+||
LATEST UPDATE 2026
1. The basic unit of life is the:
A. Atom
B. Tissue
C. Cell
D. Organ
Answer: C
Rationale: The cell is the smallest structure capable of independent life.
2. The atomic number of an element represents:
A. Number of neutrons
B. Number of protons
C. Number of electrons only
D. Atomic mass
Answer: B
Rationale: Atomic number equals number of protons.
3. A molecule with unequal sharing of electrons is:
A. Ionic
B. Polar covalent
C. Nonpolar
D. Metallic
Answer: B
Rationale: Polar covalent bonds share electrons unequally.
4. The pH of pure water is:
,A. 5
B. 6
C. 7
D. 8
Answer: C
Rationale: Neutral pH is 7.
5. Buffers function to:
A. Increase acidity
B. Decrease temperature
C. Maintain stable pH
D. Increase oxygen
Answer: C
6. Carbohydrates primarily function in:
A. DNA storage
B. Energy storage
C. Hormone production
D. Oxygen transport
Answer: B
7. Proteins are made of:
A. Fatty acids
B. Amino acids
C. Nucleotides
D. Monosaccharides
Answer: B
8. Lipids are important for:
, A. Cell membrane structure
B. Oxygen transport
C. Genetic coding
D. Enzyme creation
Answer: A
9. DNA is found primarily in the:
A. Ribosome
B. Cytoplasm
C. Nucleus
D. Lysosome
Answer: C
10. The monomer of nucleic acids is the:
A. Amino acid
B. Fatty acid
C. Nucleotide
D. Glucose
Answer: C
🔬 UNIT 2: CELL STRUCTURE & FUNCTION
11. The “powerhouse” of the cell is the:
A. Nucleus
B. Ribosome
C. Mitochondria
D. Golgi apparatus
Answer: C
Correct Answers|| Graded A+||
LATEST UPDATE 2026
1. The basic unit of life is the:
A. Atom
B. Tissue
C. Cell
D. Organ
Answer: C
Rationale: The cell is the smallest structure capable of independent life.
2. The atomic number of an element represents:
A. Number of neutrons
B. Number of protons
C. Number of electrons only
D. Atomic mass
Answer: B
Rationale: Atomic number equals number of protons.
3. A molecule with unequal sharing of electrons is:
A. Ionic
B. Polar covalent
C. Nonpolar
D. Metallic
Answer: B
Rationale: Polar covalent bonds share electrons unequally.
4. The pH of pure water is:
,A. 5
B. 6
C. 7
D. 8
Answer: C
Rationale: Neutral pH is 7.
5. Buffers function to:
A. Increase acidity
B. Decrease temperature
C. Maintain stable pH
D. Increase oxygen
Answer: C
6. Carbohydrates primarily function in:
A. DNA storage
B. Energy storage
C. Hormone production
D. Oxygen transport
Answer: B
7. Proteins are made of:
A. Fatty acids
B. Amino acids
C. Nucleotides
D. Monosaccharides
Answer: B
8. Lipids are important for:
, A. Cell membrane structure
B. Oxygen transport
C. Genetic coding
D. Enzyme creation
Answer: A
9. DNA is found primarily in the:
A. Ribosome
B. Cytoplasm
C. Nucleus
D. Lysosome
Answer: C
10. The monomer of nucleic acids is the:
A. Amino acid
B. Fatty acid
C. Nucleotide
D. Glucose
Answer: C
🔬 UNIT 2: CELL STRUCTURE & FUNCTION
11. The “powerhouse” of the cell is the:
A. Nucleus
B. Ribosome
C. Mitochondria
D. Golgi apparatus
Answer: C
