BioChem 210 Exam – Package Bundle
Modules 1–8 & Final Exam • 250 Original Exam-Style Practice Questions
Note: These are original practice questions aligned to the published CHEM 210 module sequence. They are not copied
from or represented as protected actual exam questions. Correct choices are marked with a large green check in place
of the dot.
MODULE 1
1. Which statement best describes biochemistry?
• The study of rocks and minerals
☑ The chemistry of living systems
• The classification of organisms by appearance
• The study of weather patterns
2. Why is carbon especially important in biological molecules?
• It forms only ionic bonds
☑ It has four valence electrons and can form diverse covalent structures
• It cannot form rings
• It is always positively charged
3. A molecule with a tetrahedral carbon center has an approximate bond angle of:
• 90°
• 107.5°
☑ 109.5°
• 180°
4. Which molecular geometry is associated with a bond angle of about 180°?
• Bent
☑ Linear
• Tetrahedral
• Trigonal pyramidal
5. Which group of elements makes up most biological molecules?
☑ C, H, O, N, P, and S
• Fe, Cu, Ag, Au, and Hg
• He, Ne, Ar, Kr, and Xe
• Na, K, Rb, Cs, and Fr
BioChem 210 Exam – Package Bundle • Page 1
, H H
O
Polar water molecule: partial charges and hydrogen-bonding geometry
Water structure and polarity
6. A polymer is best described as:
• A single atom
☑ A molecule made from repeated smaller units
• A charged ion
• A solvent
7. Which level of organization consists of several covalently linked monomers?
☑ Polymer
• Element
• Ion
• Electron shell
8. Which statement about organic chemistry is most accurate?
☑ It primarily concerns carbon-containing compounds
• It excludes all molecules containing oxygen
• It studies only metals
• It is limited to inorganic salts
9. Which formula represents methane?
☑ CH4
• C2H6
• C3H8
• CO2
10. What is the main feature of an alkane?
☑ Only carbon and hydrogen with single C–C bonds
• A carbonyl group
• A phosphate group
• An aromatic nitrogen ring
11. A functional group is:
☑ A specific arrangement of atoms that influences chemical behavior
• A whole cell
• A type of isotope
• A carbohydrate polymer
BioChem 210 Exam – Package Bundle • Page 2
,12. Which drawing style most clearly shows how atoms are connected and arranged in
a molecule?
☑ Structural formula
• Empirical formula only
• Atomic mass notation
• Element symbol alone
13. If a carbon atom forms four single covalent bonds, its valence is satisfied because
carbon has:
• 1 valence electron
• 2 valence electrons
☑ 4 valence electrons
• 8 valence electrons
14. Which statement about covalent bonds is correct?
☑ They involve sharing electrons
• They always involve transfer of electrons
• They occur only between metals
• They cannot occur in water
15. A molecule containing the same atoms but arranged differently from another
molecule illustrates the importance of:
☑ Molecular structure
• Atomic number only
• Temperature only
• Solution volume only
16. Which is an example of a macromolecule?
• A small water molecule
☑ A large protein
• A sodium ion
• A single glucose molecule
17. A molecule made from two amino acids joined by a peptide bond is best described
as a:
☑ Dipeptide
• Monosaccharide
• Nucleotide
• Fatty acid
18. Which biomolecule is directly responsible for carrying oxygen in red blood cells?
☑ Hemoglobin
• Glycogen
• Cholesterol
• DNA polymerase
19. Which statement best distinguishes a monomer from a polymer?
BioChem 210 Exam – Package Bundle • Page 3
, ☑ A monomer is a repeating building block; a polymer contains many such units
• A monomer is always larger
• A polymer contains only one atom
• There is no distinction
20. Which property allows carbon to form long biological chains?
☑ Its ability to make stable covalent bonds with itself
• Its inability to bond to hydrogen
• Its permanent positive charge
• Its lack of valence electrons
21. A ring containing carbon atoms is described as a:
☑ Cyclic structure
• Peptide
• Phosphate ester
• Linear alkane
22. Which is most likely to be classified as a biomolecule?
☑ Insulin
• Granite
• Table salt crystal only
• Atmospheric nitrogen gas
23. Which statement about molecular shape is correct?
☑ Shape can influence biological function
• Shape never affects function
• Only molecular mass matters
• All biomolecules have the same shape
24. An oligomer is generally:
☑ A molecule containing a small number of repeating subunits
• A single atom
• A solvent molecule
• A metal alloy
25. Which principle is most useful when relating a biomolecule to its biological
activity?
☑ Structure helps determine function
• Color determines function
• Mass alone determines function
• Solubility is irrelevant
MODULE 2
26. Why does water have a relatively high boiling point?
☑ Extensive hydrogen bonding
• Its lack of polarity
BioChem 210 Exam – Package Bundle • Page 4
Modules 1–8 & Final Exam • 250 Original Exam-Style Practice Questions
Note: These are original practice questions aligned to the published CHEM 210 module sequence. They are not copied
from or represented as protected actual exam questions. Correct choices are marked with a large green check in place
of the dot.
MODULE 1
1. Which statement best describes biochemistry?
• The study of rocks and minerals
☑ The chemistry of living systems
• The classification of organisms by appearance
• The study of weather patterns
2. Why is carbon especially important in biological molecules?
• It forms only ionic bonds
☑ It has four valence electrons and can form diverse covalent structures
• It cannot form rings
• It is always positively charged
3. A molecule with a tetrahedral carbon center has an approximate bond angle of:
• 90°
• 107.5°
☑ 109.5°
• 180°
4. Which molecular geometry is associated with a bond angle of about 180°?
• Bent
☑ Linear
• Tetrahedral
• Trigonal pyramidal
5. Which group of elements makes up most biological molecules?
☑ C, H, O, N, P, and S
• Fe, Cu, Ag, Au, and Hg
• He, Ne, Ar, Kr, and Xe
• Na, K, Rb, Cs, and Fr
BioChem 210 Exam – Package Bundle • Page 1
, H H
O
Polar water molecule: partial charges and hydrogen-bonding geometry
Water structure and polarity
6. A polymer is best described as:
• A single atom
☑ A molecule made from repeated smaller units
• A charged ion
• A solvent
7. Which level of organization consists of several covalently linked monomers?
☑ Polymer
• Element
• Ion
• Electron shell
8. Which statement about organic chemistry is most accurate?
☑ It primarily concerns carbon-containing compounds
• It excludes all molecules containing oxygen
• It studies only metals
• It is limited to inorganic salts
9. Which formula represents methane?
☑ CH4
• C2H6
• C3H8
• CO2
10. What is the main feature of an alkane?
☑ Only carbon and hydrogen with single C–C bonds
• A carbonyl group
• A phosphate group
• An aromatic nitrogen ring
11. A functional group is:
☑ A specific arrangement of atoms that influences chemical behavior
• A whole cell
• A type of isotope
• A carbohydrate polymer
BioChem 210 Exam – Package Bundle • Page 2
,12. Which drawing style most clearly shows how atoms are connected and arranged in
a molecule?
☑ Structural formula
• Empirical formula only
• Atomic mass notation
• Element symbol alone
13. If a carbon atom forms four single covalent bonds, its valence is satisfied because
carbon has:
• 1 valence electron
• 2 valence electrons
☑ 4 valence electrons
• 8 valence electrons
14. Which statement about covalent bonds is correct?
☑ They involve sharing electrons
• They always involve transfer of electrons
• They occur only between metals
• They cannot occur in water
15. A molecule containing the same atoms but arranged differently from another
molecule illustrates the importance of:
☑ Molecular structure
• Atomic number only
• Temperature only
• Solution volume only
16. Which is an example of a macromolecule?
• A small water molecule
☑ A large protein
• A sodium ion
• A single glucose molecule
17. A molecule made from two amino acids joined by a peptide bond is best described
as a:
☑ Dipeptide
• Monosaccharide
• Nucleotide
• Fatty acid
18. Which biomolecule is directly responsible for carrying oxygen in red blood cells?
☑ Hemoglobin
• Glycogen
• Cholesterol
• DNA polymerase
19. Which statement best distinguishes a monomer from a polymer?
BioChem 210 Exam – Package Bundle • Page 3
, ☑ A monomer is a repeating building block; a polymer contains many such units
• A monomer is always larger
• A polymer contains only one atom
• There is no distinction
20. Which property allows carbon to form long biological chains?
☑ Its ability to make stable covalent bonds with itself
• Its inability to bond to hydrogen
• Its permanent positive charge
• Its lack of valence electrons
21. A ring containing carbon atoms is described as a:
☑ Cyclic structure
• Peptide
• Phosphate ester
• Linear alkane
22. Which is most likely to be classified as a biomolecule?
☑ Insulin
• Granite
• Table salt crystal only
• Atmospheric nitrogen gas
23. Which statement about molecular shape is correct?
☑ Shape can influence biological function
• Shape never affects function
• Only molecular mass matters
• All biomolecules have the same shape
24. An oligomer is generally:
☑ A molecule containing a small number of repeating subunits
• A single atom
• A solvent molecule
• A metal alloy
25. Which principle is most useful when relating a biomolecule to its biological
activity?
☑ Structure helps determine function
• Color determines function
• Mass alone determines function
• Solubility is irrelevant
MODULE 2
26. Why does water have a relatively high boiling point?
☑ Extensive hydrogen bonding
• Its lack of polarity
BioChem 210 Exam – Package Bundle • Page 4
