CHEM 210 Biochemistry Module 1 to 8 Exams' & Final Exam (2025 / 2026) Portage Learning Questions and Verified Answers, 100% Guaranteed Pass ||Complete A+ Guide

CHEM 210 Biochemistry Module 1 to 8 Exams' & Final Exam ()
Portage Learning Questions and Verified Answers, 100% Guaranteed
Pass ||Complete A+ Guide
CHEM 210 Biochemistry Module 1–8 Exams & Final Exam (2025/2026)
Portage Learning Comprehensive Practice Exam & Study Guide
Table of Contents
Module 1 – Foundations of Biochemistry
1. Biomolecules and Biological Systems

2. Water and Chemical Bonding

3. pH, Buffers, and Acid-Base Chemistry

4. Functional Groups

5. Thermodynamics

6. Practice Multiple Choice Questions

7. Short Answer Questions

8. Calculation Problems

9. Detailed Answer Key & Explanations
Multiple Choice

1. Which element is the most abundant in living organisms by mass?
A. Carbon
B. Hydrogen
C. Oxygen
D. Nitrogen



2. Water molecules are held together by:
A. Ionic bonds
B. Covalent bonds

, C. Hydrogen bonds
D. Peptide bonds



3. Which of the following best describes a buffer?
A. A substance that speeds up reactions
B. A solution that resists changes in pH
C. A molecule that stores energy
D. A compound that neutralizes proteins



4. The pH of a neutral solution at 25°C is:
A. 0
B. 5
C. 7
D. 14



5. Which functional group is acidic?
A. Amino (-NH₂)
B. Hydroxyl (-OH)
C. Carboxyl (-COOH)
D. Sulfhydryl (-SH)



6. Carbon forms four covalent bonds because it has:
A. One valence electron
B. Two valence electrons
C. Four valence electrons
D. Eight valence electrons



7. Which bond is the strongest?
A. Hydrogen bond
B. Van der Waals interaction
C. Ionic bond in water
D. Covalent bond