WEEK 1 EXAM QUESTIONS: BIOS 251,
2025/2026 WITH CORRECT/ACCURATE
ANSWERS 2025/2026
✓
✓
Which of the following elements is a trace mineral in the body?
g g g g g g g g g g g
Carbon
Hydrogen
Calcium
Iodine
Oxygen - CORRECT ANSWERS- Iodine
g g g gg
Which subspecialty of anatomy studies the structures and function of
g g g g g g g g g
cells?
g
Embryology
Systemic anatomy g
Histology
Cell biology
g
Developmental biology - CORRECT ANSWERS- Cell biology
g g g g gg g
Lemon juice is an acid. What would you expect for its pH?
g g g g g g g g g g g
,3
7
9
14 - CORRECT ANSWERS- 3
g g g gg
Ammonia is a base. What would you expect for its pH?
g g g g g g g g g g
1
3
7
10 - CORRECT ANSWERS- 10
g g g gg
Buffers are a combination of a weak acid and
g g g g g g g g
strong acids. g
strong bases. g
anions from the salts of the weak acids.
g g g g g g g
all of these. - CORRECT ANSWERS- anions from the salts of the weak
g g g g g gg g g g g g g
acids
g
Buffers in the blood are needed to
g g g g g g
, increase the pH. g g
decrease the pH. g g
maintain a stable pH. g g g
all of these. - CORRECT ANSWERS- all of these
g g g g g gg g g
Ionic bonds involve a transfer of electrons from one molecule to
g g g g g g g g g g
ganother. - CORRECT ANSWERS- True
g g g gg
Covalent bonds involve a transfer of electrons from one molecule to
g g g g g g g g g g
another. - CORRECT ANSWERS- False
g g g g gg
Hydrogen bonds involve a non-uniform sharing of electrons between
g g g g g g g g
two or more molecules. - CORRECT ANSWERS- True
g g g g g g g gg
Water can form hydrogen bonds with itself. - CORRECT ANSWERS-
g g g g g g g g g g
True
g
Hydrogen bonding is essential in the structure of proteins. - CORRECT
g g g g g g g g g g
ANSWERS- True
g gg
Hydrogen bonding is essential in the structure of lipids. - CORRECT
g g g g g g g g g g
ANSWERS- False
g gg
What type of bond is found in salts?
g g g g g g g
2025/2026 WITH CORRECT/ACCURATE
ANSWERS 2025/2026
✓
✓
Which of the following elements is a trace mineral in the body?
g g g g g g g g g g g
Carbon
Hydrogen
Calcium
Iodine
Oxygen - CORRECT ANSWERS- Iodine
g g g gg
Which subspecialty of anatomy studies the structures and function of
g g g g g g g g g
cells?
g
Embryology
Systemic anatomy g
Histology
Cell biology
g
Developmental biology - CORRECT ANSWERS- Cell biology
g g g g gg g
Lemon juice is an acid. What would you expect for its pH?
g g g g g g g g g g g
,3
7
9
14 - CORRECT ANSWERS- 3
g g g gg
Ammonia is a base. What would you expect for its pH?
g g g g g g g g g g
1
3
7
10 - CORRECT ANSWERS- 10
g g g gg
Buffers are a combination of a weak acid and
g g g g g g g g
strong acids. g
strong bases. g
anions from the salts of the weak acids.
g g g g g g g
all of these. - CORRECT ANSWERS- anions from the salts of the weak
g g g g g gg g g g g g g
acids
g
Buffers in the blood are needed to
g g g g g g
, increase the pH. g g
decrease the pH. g g
maintain a stable pH. g g g
all of these. - CORRECT ANSWERS- all of these
g g g g g gg g g
Ionic bonds involve a transfer of electrons from one molecule to
g g g g g g g g g g
ganother. - CORRECT ANSWERS- True
g g g gg
Covalent bonds involve a transfer of electrons from one molecule to
g g g g g g g g g g
another. - CORRECT ANSWERS- False
g g g g gg
Hydrogen bonds involve a non-uniform sharing of electrons between
g g g g g g g g
two or more molecules. - CORRECT ANSWERS- True
g g g g g g g gg
Water can form hydrogen bonds with itself. - CORRECT ANSWERS-
g g g g g g g g g g
True
g
Hydrogen bonding is essential in the structure of proteins. - CORRECT
g g g g g g g g g g
ANSWERS- True
g gg
Hydrogen bonding is essential in the structure of lipids. - CORRECT
g g g g g g g g g g
ANSWERS- False
g gg
What type of bond is found in salts?
g g g g g g g
