Which of the following statement is incorrect?

1. The acid insoluble fraction, has only four types of organic compounds, proteins, polysaccharides nucleic acids and lipids 

2. Chemical compounds found in living organisms are of two types, acid soluble and acid insoluble

3. The compounds which are found in the acid insoluble fraction are called micromolecules 

4. The acid soluble pool represents roughly the cytoplasmic composition 

Subtopic:  Element Analysis |
 87%
From NCERT
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Biologists describe the protein structure at four levels. Which level described the sequence of amino acids, i.e., the positional information in a protein?

1. Primary structure

2. Secondary structure

3. Tertiary structure 

4. Quaternary structure 

Subtopic:  Proteins |
 78%
From NCERT
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Mark the Incorrect statement 

1. Co-enzymes are also organic compounds but their association with apoenzyme is only transient

2. Vmax (maximum velocity) represent that there are no substrate molecules to bind with free enzyme molecule

3. Living state is non-equilibrium steady state to be able to perform work 

4. Enzymes eventually bring down the energy barrier making the transition of substrate to product more easy 

Subtopic:  Enzymes | Properties of Enzymes |
 69%
From NCERT
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Lecithin is formed by 

1. Fatty acid (2) + Phosphoric acid (1) + Ethanolamine 

2. Fatty acid (2) + Phosphoric acid (1) + Serine

3. Fatty acid (3) + Glycerol

4. Glycerol (1) + Fatty acid (2) + Phosphoric acid (1) + Choline 

Subtopic:  Lipids: Glycerolipids, Phospholipids & Glycerol |
 65%
From NCERT
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Which of the following monosaccharide is pentose sugar?

1. Mannose 

2. Ribose

3. Galactose

4. Glucose

 

Subtopic:  Nucleic Acid |
 86%
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Which of the following is not a nucleoside?

1. Uridine

2. Cytidylic acid CMP

3. Thymidine

4. Guanosine

Subtopic:  Nucleic Acid: Nucleotides |
 88%
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The structure given below is of

                          

1. A purine base

2. Adenosine

3. Adenylic acid

4. A pyrimidine base

Subtopic:  Nucleic Acid |
 79%
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Compounds which consists of only one type of monosaccharide monomer are called homopolysaccharides. Which one of the following does not belong this category?

1. Starch 

2. Pectin

3. Cellulose

4. Glycogen

Subtopic:  Carbohydrates: Introduction |
 64%
From NCERT
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Exoskeleton of anthropods possesses chitin which is

1. A complex polysaccharide 

2. A polymer of N-acetylglucosamine

3. Known for forming complex helices in its secondary structure

4. Both (1) & (2)

Subtopic:  Carbohydrates: Cellulose, Chitin, Inulin & Agar |
 86%
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Most enzymes consist of two parts i.e. 

1. Holoenzyme and prosthetic group

2. Enzyme and coenzyme

3. Apoenzyme and enzyme

4. Apoenzyme and cofactor

Subtopic:  Enzyme Cofactors |
 85%
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