Q. No.Quaternary structure is seen in proteins that:
1. act as biochemical catalysts
2. are embedded within the plasma membrane
3. are assembly of more than one subunits
4. do not have any structural role in the cell
1. act as biochemical catalysts
2. are embedded within the plasma membrane
3. are assembly of more than one subunits
4. do not have any structural role in the cell
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The double helix model of DNA by Watson and Crick exhibits its:
| 1. Primary structure | 2. Secondary structure |
| 3. Tertiary structure | 4. Quaternary structure |
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The strands of the DNA double helix are:
| 1. identical | 2. coiled around each other |
| 3. parallel to each other | 4. complementary to each other |
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At each step of ascent, the helical strand of DNA turns
| 1. 36 degree | 2. 34 degree |
| 3. 20 degree | 4. 180 degree |
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In the absence of carbonic anhydrase in the human body, the reaction between carbon dioxide and water leading to the formation of carbonic acid:
| 1. Will not occur | 2. Will slow down considerably |
| 3. Will get faster | 4. Will remain unaltered |
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Enzymes speed up the chemical reactions by:
1. Getting used up in the reaction
2. Formation of different products
3. Converting endothermic reactions to exothermic
4. Lowering activation energy
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The substrate concentration at which the enzyme catalyzed reaction achieves ½ Vmax is its ____ value.
| 1. Km | 2. Kcat |
| 3. pKa | 4. Q10 |
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In general, with every 10oC rise in the temperature [in the range 0oC to 40oC], the rate of enzyme catalyzed reaction:
1. Becomes half
2. Gets doubled
3. Remains same
4. There is no such correlation in general
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