Kabarak University Medical Biochemistry I Exam Review

Exam Overview

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Examination Details

Institution: Kabarak University
Examination Type: Main Campus Second Semester 2020/2021 Academic Year Examination
Degree Program: Science in Nursing
Course Code: SCNU 113: Medical Biochemistry I
Stream: Y1S1 (Regular)
Time: 9:00-11:00 AM
Examination Session: May-August
Date: 24/08/2021
Venue: SMHS 1st FL. Hall 1
Copies Distributed: 45

Instructions for Candidates

  1. The examination paper has THREE (3) sections with a total of 100 Marks. Answer ALL questions in sections A, B, and C.
  2. SECTION A: Multiple Choice Questions - 20 Marks
  3. SECTION B: Short Answer Questions - 40 Marks
  4. SECTION C: Long Answer Questions - 40 Marks
  5. Candidates must answer all questions in the BOOKLET provided.

SECTION A: MULTIPLE CHOICE QUESTIONS (20 MARKS)

Choose one correct answer for each question; each question is worth 1 mark.

  1. Enzymes are catalysts that:

    • A. Accelerate the rates of biological reactions
    • B. Inhibit the formation of unwanted metabolites
    • C. Change the equilibrium constants of reactions
    • D. Are generally non-specific in reactions they catalyze

  2. Enzymes belong to which group of chemicals:

    • A. Polysaccharides
    • B. Lipids
    • C. Saccharides
    • D. Proteins

  3. Which of the following is not a nonpolar amino acid?

    • A. Isoleucine
    • B. Valine
    • C. Methionine
    • D. Arginine

  4. The type of bond holding the amino acid units together is called:

    • A. A glycosidic bond
    • B. An ester bond
    • C. A peptide bond
    • D. A protein bond

  5. Proteins are broken down into their amino acids by:

    • A. A hydrolysis reaction
    • B. A decomposition reaction
    • C. A polymerisation reaction
    • D. An addition reaction

  6. The law of thermodynamics which states that energy can neither be created nor be destroyed is:

    • A. The second law of thermodynamics
    • B. Third law of thermodynamics
    • C. First law of thermodynamics
    • D. Zero-order kinetics

  7. Which of the following hormones is involved in increased reabsorption of water from renal tubular epithelial cells?

    • A. Insulin
    • B. Vasopressin
    • C. Epinephrine
    • D. Cortisol

  8. Identify the purine base of nucleic acids from the following:

    • A. Cytosine
    • B. Thymine
    • C. Uracil
    • D. Adenine

  9. Which of the following is not a component of RNA?

    • A. Thymine
    • B. Adenine
    • C. Guanine
    • D. Cytosine

  10. What is the composition of a nucleoside?

    • A. A sugar + a phosphate
    • B. A base + a sugar
    • C. A base + a phosphate
    • D. A base + a sugar + phosphate

  11. Two sugars that differ in configuration only at one chiral center are called:

    • A. Enantiomers
    • B. Diastereomers
    • C. Anomers
    • D. Epimers

  12. Cellulose is:

    • A. A linear polymer of glucose units linked by beta (1-4) glycosidic bonds
    • B. A linear polymer of glucose units linked by alpha (1-4) glycosidic bonds
    • C. A branched polymer of glucose units linked by both alpha (1-4) and beta (1-4) linkages
    • D. A linear polymer of fructose units linked by alpha (1-6) linkages

  13. Differences between amylose and amylopectin include:

    • A. Amylose contains only glucose residues, while amylopectin contains both glucose and fructose
    • B. Amylopectin is a branched molecule, while amylose is linear
    • C. Amylose has both alpha (1-4) and alpha(1-6) glycosidic linkages, while amylopectin has only alpha(1-4) linkages
    • D. Amylose has alpha (1-4) glycosidic linkages, while amylopectin has beta(1-4) linkages

  14. What functional group is present in a triglyceride formed