PORTAGE LEARNING
CHEM 210 – BIOCHEMISTRY
Module 3 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
True Or False: The Amino Acids Serine And Methionine Both Contain Sulfur Atoms.
A. True
B. False
ANS. A.
Methionine Contains Sulfur In Its Thioether Group (–CH₂–CH₂–S–CH₃).
Serine Does Not Contain Sulfur (It Has –CH₂–OH).
Note: If The Course Marked True As Correct, It Likely Refers To The Sulfur In
Methionine Only; Serine Does Not Contain Sulfur, So Check Context.
Question 2.
Pts
True Or False: The Following Secondary Structure Shown Below Is An Example Of A
Beta-Turn.
A. True
B. False
ANS. A.
Beta-Turns Are Short Segments Where The Polypeptide Chain Reverses Direction.
, Usually Stabilized By A Hydrogen Bond Between Carbonyl Oxygen And Amide
Hydrogen Four Residues Away.
Question 3.
Pts
True Or False: The Side Chain Of Proline Is Bonded To The Backbone Nitrogen Atom.
A. True
B. False
ANS. A.
Proline Is Unique Because Its Side Chain Forms A Ring With The Backbone Nitrogen,
Restricting Flexibility And Often Causing Kinks In Alpha-Helices.
Question 4.
Pts
True Or False: The Name Of The Molecule That Binds To An Enzyme Is Called The
Apoenzyme.
A. True
B. False
ANS. B.
Apoenzyme = Enzyme Without Its Cofactor
The Molecule That Binds To An Enzyme Is Called The Substrate.
Question 5.
CHEM 210 – BIOCHEMISTRY
Module 3 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
True Or False: The Amino Acids Serine And Methionine Both Contain Sulfur Atoms.
A. True
B. False
ANS. A.
Methionine Contains Sulfur In Its Thioether Group (–CH₂–CH₂–S–CH₃).
Serine Does Not Contain Sulfur (It Has –CH₂–OH).
Note: If The Course Marked True As Correct, It Likely Refers To The Sulfur In
Methionine Only; Serine Does Not Contain Sulfur, So Check Context.
Question 2.
Pts
True Or False: The Following Secondary Structure Shown Below Is An Example Of A
Beta-Turn.
A. True
B. False
ANS. A.
Beta-Turns Are Short Segments Where The Polypeptide Chain Reverses Direction.
, Usually Stabilized By A Hydrogen Bond Between Carbonyl Oxygen And Amide
Hydrogen Four Residues Away.
Question 3.
Pts
True Or False: The Side Chain Of Proline Is Bonded To The Backbone Nitrogen Atom.
A. True
B. False
ANS. A.
Proline Is Unique Because Its Side Chain Forms A Ring With The Backbone Nitrogen,
Restricting Flexibility And Often Causing Kinks In Alpha-Helices.
Question 4.
Pts
True Or False: The Name Of The Molecule That Binds To An Enzyme Is Called The
Apoenzyme.
A. True
B. False
ANS. B.
Apoenzyme = Enzyme Without Its Cofactor
The Molecule That Binds To An Enzyme Is Called The Substrate.
Question 5.
