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1. Ester linkages occur in
A. Proteins
B. Lipids
C. Nucleic acids
D. Carbohydrates
2. Lactose is made of
A. Glucose + Fructose
B. Fructose + Fructose
C. Glucose + Glucose
D. Glucose + Galactose
3. Arachidonic acid is
A. Essential fatty acid
B. Non-essential fatty acid
C. Polyunsaturated fatty acid
D. Both 1 and 3 above
4. When we homogenise any tissue in an acid, the acid-soluble pool represents
A. Mitochondria
B. Nucleus
C. Cell membrane
D. Cytoplasm
5. Which of the following carbohydrates is not a disaccharide?
A. Lactose
B. Maltose
C. Sucrose
D. Galactose
6. An element not of much importance to plants is
A. Na
B. Ca
C. Zn
D. Cu
7. A sedoheptulose molecule has _____carbon atoms.
A. 3
B. 7
C. 4
D. 6
8. The most common monomer of carbohydrates is
A. Sucrose
B. Fructose
C. Maltose
D. Glucose
9. The most abundant mineral of the animal body is
A. Potassium
B. Sodium
C. Calcium
D. Iron
10. Which one of the following pairs of nitrogenous bases of nucleic acids is wrongly matched with the category mentioned against it?
A. Adenine, Thymine - Purines
B. Uracil, Cytosine - Pyrimidines
C. Guanine, Adenine - Purines
D. Thymine, Uracil - Pyrimidines
11. Fehling’s solution is used for the detection of
A. Fats
B. Starch
C. Glucose
D. All carbohydrates
12. Adenine is
A. Nucleoside
B. Purine
C. Pyrimidine
D. Nucleotide
14. Which is a reducing sugar?
A. Cellulose
B. Maltose
C. Starch
D. Sucrose
15. A nucleoside differs from a nucleotide in not having a
A. Phosphate group
B. Glucose
C. Sugar
D. Nitrogen base
16. Maximum iron occurs in
A. WBC
B. Bone cells
C. Protein
D. RBC
17. Nitrogen is a component of
A. Carbohydrates
B. Lipids
C. Proteins
D. Polyphosphates
19. Amino acids, as the name suggests, have both an amino group and a carboxyl group in their structure. In addition, all naturally occurring amino acids (those which are found in proteins) are called L-amino acids. From this, can you guess from which compound the simplest amino acid is made?
A. Formic acid
B. Phenol
C. Methane
D. Glycine
20. An immediate source of cellular energy is
A. Pyruvic acid
B. NADH
C. Glucose
D. ATP
21. Which is an organic compound found in most cells?
A. Glucose
B. Sodium chloride
C. Water
D. Oxygen
22. Which one of the following amino acids has the hydroxyl methyl group as its R group?
A. Alanine
B. Serine
C. Proline
D. Arginine
23. The chemical used most by plants is
A. Nitrogen
B. Oxygen
C. Carbon dioxide
D. Cytochrome
24. Which of the following statements is not true? A. Glycerol is a 3-carbon alcohol with 3-OH groups which act as binding sites. B. Waxes are esters formed between a long chain alcohol and saturated fatty acids. C. The term protein was coined by Johannes Mulder. D. Agar is an indispensable polysaccharide and is a complex polymer of glucose and sulphur-containing carbohydrates.
A. C and D only
B. A and C only
C. A, C and D
D. A and D only
25. A source of maximum energy is
A. Carbohydrate
B. Vitamin
C. Fat
D. Protein
26. The amino acid essential in man is
A. Creatinine
B. Phenylalanine
C. Serine
D. Aspartic acid
27. An essential amino acid which is synthesised by plants is
A. Phenylalanine
B. Leucine
C. Serine
D. Arginine
28. The most abundant chemical in living organisms could be
A. Protein
B. Nucleic acid
C. Water
D. Sugar
29. Which one of the following is not a carbohydrate?
A. Pepsin
B. Maltose
C. Cellulose
D. Ascorbic acid
30. On hydrolysis of cane sugar, we can obtain
A. Glucose + fructose
B. Glucose + galactose
C. Glucose + sucrose
D. Glucose + maltose
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