Q. No.The catalytic efficiency of two different enzymes can be compared by the
1. formation of the product
2. pH optimum value
3. Km value
4. molecular size of the enzyme
1. formation of the product
2. pH optimum value
3. Km value
4. molecular size of the enzyme
Telomerase is an enzyme which is a
1. repetitive DNA
2. RNA
3. simple protein
4. ribonucleoprotein
An organic substance bound to an enzyme and essential for its activity is called
1. holoenzyme
2. apoenzyme
3. isoenzyme
4. coenzyme
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An enzyme that can stimulate germination of barley seeds is
1. α-amylase
2. lipase
3. protease
4. invertase
Antibodies in our body are complex
1. Steroids
2. prostaglandins
3. Glycoproteins
4. Lipoproteins
Antiparallel strands of a DNA molecule means that
| 1. | the phosphate groups of two DNA strands, at their ends, share the same position |
| 2. | the phosphate groups at the start of two DNA strands are in opposite position (pole) |
| 3. | one strand turns clockwise |
| 4. | one strand turns anti-clockwise |
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One turn of the helix in a B-form DNA is approximately of the length
| 1. | 0.34 nm | 2. | 3.4 nm |
| 3. | 2 nm | 4. | 20 nm |
The two polynucleotide chains in DNA are
1. parallel
2. discontinuous
3. antiparallel
4. semi - conservative
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About 98 percent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and
1. phosphorus and sulphur
2. sulphur and magnesium
3. magnesium and sodium
4. calcium and phosphorus
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Which one of the following is not a constituent of cell membrane
1. Cholesterol
2. Glycolipids
3. Proline
4. Phospholipids
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