Identify the given nitrogenous base:
1. Thymine 2. Uracil
3. Adenine 4. Guanine

Subtopic:  Nucleic Acid: Nucleotides | The DNA |
 78%
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Identify the given molecules:
I II
1. 2’ deoxyribose Ribose
2. Ribose 2’ deoxyribose
3. Adenosine Adenylic acid
4. α glucose β glucose
Subtopic:  Nucleic Acid |
 73%
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Identify the correct statements:
I: The level of protein structure organization that provides the positional information of amino acids in a protein is called as the primary structure.
II: Only right handed helices are observed in proteins seen in living organisms.
III: Tertiary structure is absolutely necessary for the many biological activities of proteins.
 
1. Only I and II 2. Only I and III
3. Only II and III 4. I, II and III
Subtopic:  Proteins |
 68%
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In a nucleic acid:
I: a phosphate moiety links the 5’ carbon of one sugar of one nucleotide to the 1’ carbon of the sugar of the succeeding nucleotide.
II: the backbone of the strand is made up of alternate sugar and nitrogenous bases.
1. Only I is correct
2. Only Ii is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic:  The DNA | Double Helix : Watson & Crick |
 52%
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Match each item in Column I with only one item in Column II and select the correct match from the codes given:
Column I
[Component]
Column II
[% of the total cellular mass]
A. Protein P. 2
B. Carbohydrates Q. 1
C. Lipids R. 5-7
D. Nucleic acids  S. 3
T. 10-15
U. 70-90

Codes:
A B C D
1. U P R Q
2. T S P R
3. T P S R
4. P Q R S
Subtopic:  Introduction |
 76%
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Identify an acidic amino acid amongst the following:    
1. 2.
3. 4.
Subtopic:  Amino Acids |
 79%

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Identify the given biomolecule:
1. Thymine 2. Thymosine
3. Thymidylic acid 4. Cytidylic acid
Subtopic:  Nucleic Acid: Nucleotides |

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Consider the given statements regarding some important secondary metabolites:
I: Morphine is a strong opiate that is found naturally in opium and is mainly used as a pain medication.
II: Ricin is a toxin and a highly potent toxin produced in the seeds of the castor oil plant.
III: Concanavalin A is a lectin and is widely used in biology and biochemistry to characterize glycoproteins and other sugar-containing entities on the surface of various cells.
IV: Vinblastin is an anti-cancer drug typically used with other medications, to treat a number of types of cancer.
1. Only I, II and III are correct
2. Only I, III and IV are correct
3. Only II, III and IV are correct
4. I, II, III and IV are correct
Subtopic:  Primary & Secondary Metabolites |
 80%

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The given figure represents structure of glycogen/amylopectin. Identify A, B, C and D:
A B C D
1. Reducing end Non reducing end α [1→4] linkage α [1→6] linkage
2. Non reducing end Reducing end α [1→4] linkage α [1→6] linkage
3. Reducing end Non reducing end α [1→6] linkage α [1→4] linkage
4. Non reducing end Reducing end α [1→6] linkage α [1→4] linkage
Subtopic:  Carbohydrates | Carbohydrates: Glycosidic Bond & Disaccharide | Carbohydrates: Starch & Glycogen |

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What level of protein structure is shown in the given diagram?

1. Primary 2. Secondary
3. Tertiary 4. Quaternary
Subtopic:  Proteins |
 65%

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