Identify the correct statement:
1.
α amino acids are substituted methanes
2.
Only triglycerides are lipids that are both macromolecules as well as polymers
3.
Cellulose forms secondary helical structures and can hold iodine molecules in the helical portion
4.
Every virus will have both DNA and RNA as its genetic material
Subtopic: Amino Acids |
78%
Level 2: 60%+
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Identify the incorrectly match pair:
| 1. | RuBisCO | Most abundant protein in the whole of the biosphere |
| 2. | Insulin | A polymer of fructose |
| 3. | Vinblastin | A secondary metabolite used as a drug |
| 4. | Adenine | A substituted purine |
Subtopic: Proteins | Primary & Secondary Metabolites |
75%
Level 2: 60%+
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Regarding various levels of protein structure, which of the following is not true?
| 1. | The positional information of amino acids in a protein is called the primary structure. |
| 2. | Alpha helix is a secondary structure and beta pleated sheet is a tertiary structure of a protein. |
| 3. | Tertiary structure is absolutely necessary for the many biological activities of proteins. |
| 4. | Quaternary structures are seen in proteins made of more than one polypeptide chain. |
Subtopic: Proteins |
88%
Level 1: 80%+
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Subtopic: Carbohydrates: Cellulose, Chitin, Inulin & Agar |
88%
Level 1: 80%+
NEET - 2022
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Read the following statements on lipids and find out correct set of statements:
| a: | Lecithin found in the plasma membrane is a glycolipid. |
| b: | Saturated fatty acids possess one or more c=c bonds. |
| c: | Gingely oil has lower melting point, hence remains as oil in winter. |
| d: | Lipids are generally insoluble in water but soluble in some organic solvents. |
| e: | When fatty acid is esterified with glycerol, monoglycerides are formed. |
Choose the correct answer from the options given below:
1. (a), (b) and (d) only
2. (a), (b) and (c) only
3. (a), (d) and (e) only
4. (c), (d) and (e) only
Subtopic: Lipids |
72%
Level 2: 60%+
NEET - 2022
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A dehydration reaction links two glucose molecules to produce maltose. If the formula for glucose is C6H12O6 then what is the formula for maltose ?
1. C12H24O11
2. C12H20O10
3. C12H24O12
4. C12H22O11
1. C12H24O11
2. C12H20O10
3. C12H24O12
4. C12H22O11
Subtopic: Carbohydrates: Glycosidic Bond & Disaccharide |
72%
Level 2: 60%+
NEET - 2022
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Match List-I with List-II
Choose the correct answer from the options given below:
| List-I (Biological Molecules) |
List - II (Biological functions) |
||
| (a) | Glycogen | (i) | Hormone |
| (b) | Globulin | (ii) | Biocatalyst |
| (c) | Steroids | (iii) | Antibody |
| (d) | Thrombin | (iv) | Storage product |
| (a) | (b) | (c) | (d) | |
| 1. | (iv) | (iii) | (i) | (ii) |
| 2. | (iii) | (ii) | (iv) | (i) |
| 3. | (iv) | (ii) | (i) | (iii) |
| 4. | (ii) | (iv) | (iii) | (i) |
Subtopic: Proteins | Carbohydrates: Starch & Glycogen |
78%
Level 2: 60%+
NEET - 2022
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Given below are two statements:
| Statement I: | Cellulose is a polymeric polysaccharide |
| Statement II: | The building blocks of cellulose are glucose molecules |
In the light of the above statements , choose the correct answer from the options given below:
| 1. | Statement I is correct but Statements II is incorrect. |
| 2. | Statements I is incorrect but Statements II is correct. |
| 3. | Both Statements I and Statements II are correct. |
| 4. | Both Statements I and Statements II are false. |
Subtopic: Carbohydrates: Cellulose, Chitin, Inulin & Agar |
81%
Level 1: 80%+
NEET - 2022
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Which of the following bond is formed as a result of reaction of carboxyl group of one amino acid with amino group of other amino acids with elimination of water?
1. Phosphodiester Bond
2. Hydrogen Bond
3. Glycosidic Bond
4. Peptide Bond
Subtopic: Zwitter ion & Peptide Bond |
72%
Level 2: 60%+
NEET - 2022
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In a reaction catalyzed by an enzyme, which of the following statements is correct ?
| 1. | Enzymes decrease the activation energy for formation of transition state. |
| 2. | Enzymes make transition form substrate to product more difficult. |
| 3. | Enzymes increase the activation energy for formation of transition state. |
| 4. | Enzyme-substrate complex formed during a reaction lasts for a very long time. |
Subtopic: Enzyme Catalysis |
84%
Level 1: 80%+
NEET - 2022
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