What level of protein organization structure explains the 3-D shape of an enzyme?
1. | primary structure |
2. | tertiary structure |
3. | secondary structure |
4. | quaternary structure |
List I | List II | ||
1. | Lipase | I. | Peptide bond |
2. | Nuclease | II. | Ester bond |
3. | Protease | III. | Glycosidic bond |
4. | Amylase | IV. | Phosphodiester bond |
Which of the following statements is not correct ?
1. | Carbonic anhydrase enzyme accelerate the rate of reaction times |
2. | Functional aspect of enzymes is related to the tertiary structure of proteins |
3. | Enzymes are composed of only one amino acid molecule |
4. | Low temperature not cause the denaturtion but inactivate the enzyme |
1. | They are highly substrate specific |
2. | In thermophilic organisms, enzymes can catalyze reaction at high temperatures, i.e. 90°C |
3. | All enzymes are proteinaceous in nature |
4. | Some enzymes have metal ions |
NAD and NADP are consider as
1. | Apoenzyme and cofactor respectively. |
2. | Coenzyme and co-factor respectively. |
3. | Both as co-enzyme. |
4. | Apoenzyme and holoenzyme respectively. |
How many statements are false from given information?
(a) | Ribozymes are enzyme made up of protein. |
(b) | In every chemical reaction transition state energy is always greater than activation energy. |
(c) | Co-factors are always proteinous in nature |
(d) | Enzyme inhibition can not be removed. |
(e) | Enzyme action can be stopped at low temp. |
(f) | Km value (Michaelis constant) is the specific concentration of substrate molecule. |
1. 2
2. 3
3. 4
4. 5
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 |
List-I | List-II | ||
A. | Ribozyme | I. | Glucose transport |
B. | Lecithin | II. | Non-proteinaceous enzyme |
C. | Glut-4 | III. | Lipid |
D. | Vitamins | IV. | Coenzyme |
1. | A-IV, B-III, C-I, D-II | 2. | A-IV, B-III, C-II, D-I |
3. | A-II, B-I, C-III, D-IV | 4. | A-II, B-III, C-I, D-IV |