2nd Year Chemistry Chapter 15 Test15. Biochemistry

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. Optimum temperature for human enzymes is about:
   1. 0°C
   2. 25°C
   3. 37°C
   4. 60°C
2. Fructose is classified as:
   1. Aldohexose
   2. Ketohexose
   3. Aldopentose
   4. Ketopentose
3. RNA is usually:
   1. Double-stranded
   2. Single-stranded
   3. Spiral-stranded
   4. None of these
4. The polysaccharide that acts as a storage material in plants is:
   1. Glycogen
   2. Cellulose
   3. Starch
   4. Maltose
5. Calcium is mainly stored in:
   1. Blood
   2. Bones and teeth
   3. Liver
   4. Pancreas
6. Deficiency of Vitamin D reduces the absorption of:
   1. Iron
   2. Zinc
   3. Calcium
   4. Sodium
7. Cholesterol is mainly used in the body to produce:
   1. Enzymes
   2. Hormones
   3. Vitamins
   4. Carbohydrates
8. Minerals make up about what percentage of the human body?
   1. 0.01
   2. 0.05
   3. 0.1
   4. 0.15
9. Which of the following is a disaccharide?
   1. Glucose
   2. Maltose
   3. Cellulose
   4. Glycogen
10. Monosaccharides cannot be:
    1. Hydrolyzed
    2. Oxidized
    3. Reduced
    4. Solubilized