Q. No.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)
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 |
Which one is the most abundant protein in the animal world?
1. Collagen
2. RUBISCO
3.Trypsin
4. Insulin
Which of the following does not affect the activity of simple enzyme?
| 1. | Temperature |
| 2. | Presence of coenzymes |
| 3. | pH |
| 4. | Substarate concentration |
Which of the following is incorrect match of the compounds shown?
| 1. |  |
- | A steroid deficiency of which causes hypersensitivity to a variety of stimuli and airway obstruction in the lungs of new born |
| 2. |  |
- | It is found in animals only. It is precursor of hormones such as progesterone, testosterone, estradiol and cortisol |
| 3. |  |
- | Found in RNA bit absent in DNA |
| 4. |  |
- | Alcoholic amino acid. The 'R' group contains hydroxy methyl |
The following graphs show enzymatic activity for certain factors on x-axis and y-axis. Which of the following is correct in such regard?
1. Figure (1) ; x-axis - Potential energy , y-axis- Progress of reaction
2. Figure (2) ; x-axis - Enzymatic activity, y-axis- Temperature
3. Figure (3) ; x-axis- Velocity of reaction, y-axis-Substrate concentration
4. Figure (2) ; x-axis- pH, y-axis- Enzymatic activity
Which of the following statements is not correct about proteins?
| 1. | The first amino acid of all the proteins is also known as N-terminal amino acid |
| 2. | In proteins, only right handed helics are observed |
| 3. | α - helics are tertiary structures of proteins |
| 4. | Primary structure of a protein dictates its secondary and tertiary conformations |
Which of the following is incorrect statement with respect to carbohydrates?
| 1. | Mannose and galactose are polymers of glucose |
| 2. | Cellulose acetate is used in fabrics, cellulosic plastics and shatter proof glasses |
| 3. | Most of sugars show Benedict's test but not sucrose |
| 4. | Sucrose is composed of glucose and fructose and is a non-reducing sugar |
Following is the diagrammatic representation of three different amino acids labelled as 1, 2 and 3?
Select the option which is correct identification of amino acids 1, 2 and 3.
1 2 3
Glycine Valine Threonine
Glycine Isoleucine Aspartic acid
Glycine Alanine Serine
Glycine Serine Alanine
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