PORTAGE LEARNING
CHEM 210 – BIOCHEMISTRY
Module 2 Examination
(2026 Updated Version)
Questions with Verified, Fully Detailed Answers
Institution: Portage Learning
Course Code: CHEM 210
Course Title: Biochemistry
Module: Module 2
Assessment Type: Examination
Academic Year: 2026/2027
Edition: Updated Version
Student Name: _______________________________
Student ID: _________________________________
Instructor: _________________________________
Date: ______________________________________
Instructions to Candidates:
1. Answer all questions provided in this examination.
2. Read each question carefully before responding.
3. Show all relevant workings where applicable.
4. This document contains verified answers for academic study and revision.
5. Academic integrity is expected at all times.
Time Allowed: _____ Hours
Total Marks: _____
,Question 1.
Pts
The PH Of A Solution Of 0.0010 M NaOH Is:
A. 1
B. 11
C. 8
D. 14
ANS. B.
NaOH Is A Strong Base, So It Dissociates Completely:
[Oh−]=1.0×10−3[Oh⁻] = 1.0 × 10⁻³[Oh−]=1.0×10−3
Kw=[H+][Oh−]=1.0×10−14k_W = [H⁺][Oh⁻] = 1.0 × 10⁻¹⁴Kw=[H+][Oh−]=1.0×10−14
[H+]=1.0×10−11[H⁺] = 1.0 × 10⁻¹¹[H+]=1.0×10−11
Ph = −Log(1.0 × 10⁻¹¹) = 11
Question 2.
Pts
Water Is A Unique Molecule. Which Of The Following Contributes To Water’s Unique
Place In The Chemical World?
A. Geometry Of The Molecule
B. Polarity Of The O–H Bonds
C. Ability Of Water Molecules To Hydrogen Bond
D. All Of The Answers Are Correct
ANS. D.
, Water’s Unusual Properties Result From All Of These Factors. Its Bent Geometry, Polar
Bonds, Hydrogen Bonding Ability, And Bond Angle Collectively Explain Its High
Boiling Point, Cohesion, And Solvent Properties.
Question 3.
Pts
The Bent Shape Of Water Is Due To:
A. Dipole Arrows In A Water Molecule
B. Electronegativity Difference Between Hydrogen And Oxygen
C. Unequal Electron Sharing Between Hydrogen And Oxygen
D. Unshared Electron Pairs On The Oxygen Atom
ANS. C.
According To The Module’s Grading, Water’s Bent Shape Is Attributed To Unequal
Electron Sharing, Which Results From Oxygen Pulling Electrons More Strongly Than
Hydrogen And Influencing Molecular Geometry.
Question 4.
pts
Which Diagrams Correctly Represent A Hydrogen Bond?
CHEM 210 – BIOCHEMISTRY
Module 2 Examination
(2026 Updated Version)
Questions with Verified, Fully Detailed Answers
Institution: Portage Learning
Course Code: CHEM 210
Course Title: Biochemistry
Module: Module 2
Assessment Type: Examination
Academic Year: 2026/2027
Edition: Updated Version
Student Name: _______________________________
Student ID: _________________________________
Instructor: _________________________________
Date: ______________________________________
Instructions to Candidates:
1. Answer all questions provided in this examination.
2. Read each question carefully before responding.
3. Show all relevant workings where applicable.
4. This document contains verified answers for academic study and revision.
5. Academic integrity is expected at all times.
Time Allowed: _____ Hours
Total Marks: _____
,Question 1.
Pts
The PH Of A Solution Of 0.0010 M NaOH Is:
A. 1
B. 11
C. 8
D. 14
ANS. B.
NaOH Is A Strong Base, So It Dissociates Completely:
[Oh−]=1.0×10−3[Oh⁻] = 1.0 × 10⁻³[Oh−]=1.0×10−3
Kw=[H+][Oh−]=1.0×10−14k_W = [H⁺][Oh⁻] = 1.0 × 10⁻¹⁴Kw=[H+][Oh−]=1.0×10−14
[H+]=1.0×10−11[H⁺] = 1.0 × 10⁻¹¹[H+]=1.0×10−11
Ph = −Log(1.0 × 10⁻¹¹) = 11
Question 2.
Pts
Water Is A Unique Molecule. Which Of The Following Contributes To Water’s Unique
Place In The Chemical World?
A. Geometry Of The Molecule
B. Polarity Of The O–H Bonds
C. Ability Of Water Molecules To Hydrogen Bond
D. All Of The Answers Are Correct
ANS. D.
, Water’s Unusual Properties Result From All Of These Factors. Its Bent Geometry, Polar
Bonds, Hydrogen Bonding Ability, And Bond Angle Collectively Explain Its High
Boiling Point, Cohesion, And Solvent Properties.
Question 3.
Pts
The Bent Shape Of Water Is Due To:
A. Dipole Arrows In A Water Molecule
B. Electronegativity Difference Between Hydrogen And Oxygen
C. Unequal Electron Sharing Between Hydrogen And Oxygen
D. Unshared Electron Pairs On The Oxygen Atom
ANS. C.
According To The Module’s Grading, Water’s Bent Shape Is Attributed To Unequal
Electron Sharing, Which Results From Oxygen Pulling Electrons More Strongly Than
Hydrogen And Influencing Molecular Geometry.
Question 4.
pts
Which Diagrams Correctly Represent A Hydrogen Bond?
