Q. No.Identify the amino acid with hydroxymethyl as its R group:
1. Glycine
2. Alanine
3. Serine
4. Phenylalanine
Which of the following secondary metabolites is an anticancer drug?
1. Vinblastin
2. Concanavalin A
3. Abrin
4. Ricin
Identify the incorrect statement regarding the structure of proteins:
| 1. | They are heteropolymers containing strings of amino acids. |
| 2. | The first amino acid in the primary structure is the N-terminus amino acid |
| 3. | Only left helices are observed in proteins |
| 4. | Tertiary structure is absolutely essential for many biologic functions of the proteins |
In an average composition of a cell, the maximum % of total cellular mass [after water and protein] is constituted by:
1. Carbohydrates
2. Lipid
3. Nucleic acids
4. Ions
Identify the option, where all the columns are not matched correctly:
| 1. | Abrin | Secondary metabolite | Drug |
| 2. | GLUT-4 | Protein | Transport carrier |
| 3. | Lecithin | Phospholipid | Cell membrane |
| 4. | Thymidylic Acid | Nucleotide | DNA |
The unique properties of each amino acid are determined by its particular:
1. R group
2. Amino group
3. Kinds of peptide bonds
4. Number of bonds to other amino acids
Given below is the graph showing the effect of substrate concentration on enzyme activity. In the presence of a competitive inhibitor, when the concentration of the substrate is progressively increased:
| 1. | The Km value increases but the reaction will not achieve Vmax |
| 2. | The Km value increases but the reaction can ultimately achieve Vmax |
| 3. | The Km value decreases but the reaction will not achieve Vmax |
| 4. | The Km value decreases but the reaction can ultimately achieve Vmax |
The compound shown below:
1. is a component of the ATP molecule
2. is most commonly found in ori region of DNA
3. can have enzymatic activity
4. may be a component of the cell membrane
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