Q. No.The double helix model of DNA by Watson and Crick exhibits its:
1. Primary structure
2. Secondary structure
3. Tertiary structure
4. Quaternary structure
1. identical
2. coiled around each other
3. parallel to each other
4. complementary to each other
At each step of ascent, the helical strand of DNA turns
| 1. | 36 degree | 2. | 34 degree |
| 3. | 20 degree | 4. | 180 degree |
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
The substrate concentration at which the enzyme catalyzed reaction achieves ½ Vmax is its ____ value.
| 1. | Km | 2. | Kcat |
| 3. | pKa | 4. | Q10 |
Enzymes that catalyze removal of groups from substrates by mechanisms other than hydrolysis leaving double bonds are:
| 1. | Dehygdrogenases | 2. | Transferases |
| 3. | Lyases | 4. | Ligases |
Consider the following statements:
| I: | Glycine is the simplest amino acid, with a hydrogen atom as its side chain (R group). |
| II: | Tryptophan is an aromatic amino acid. |
| III: | Lysine is an acidic amino acid. |
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
1. Positively charged form
2. Negatively charged form
3. Neutral form
4. Zwitter ionic form
The metal ion that acts as a co-factor for both alcohol dehydrogenase and carbonic anhydrase is:
| 1. | Magnesium | 2. | Iron |
| 3. | Zinc | 4. | Nickel |
Inulin is a:
1. Disaccharide containing two galactose
2. Disaccharide containing fructose and galactose
3. Polymer of fructose
4. Polysaccharide used in microbial culture
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