Bt cotton variety that was developed by the introduction of toxin gene of Bacillus thuringiensis (BT) is resistant to:
1. Fungal diseases
2. Plant nematodes
3. Insect predators
4. Insect pests
The number of substrate level of phosphorylations in one turn of citric acid cycle is:
| 1. | One | 2. | Two |
| 3. | Three | 4. | Four |
Identify the wrong statement with regards to restriction enzyme:
| 1. | They cut the strength at palindromic sites. |
| 2. | They are useful in genetic engineering. |
| 3. | Sticky ends can be joined by using DNA ligases. |
| 4. | Each restriction enzyme functions by inspecting the length of a DNA sequence. |
Flippers of Penguins and Dolphins are examples of:
| 1. | Convergent evolution | 2. | Industrial melanism |
| 3. | Natural selection | 4. | Adaptive radiation |
Identify the wrong statement with reference to transport of oxygen:
| 1. | Partial pressure of CO2 can interfere with O2 binding with haemoglobin. |
| 2. | Higher H+ concentration in alveoli favours the formation of oxyhaemoglobin. |
| 3. | Low pCO2 in alveoli favours the formation of oxyhaemoglobin. |
| 4. | Binding of oxygen with haemoglobin is mainly related to partial pressure of O2. |
Identify the wrong statement with reference to the gene 'I' that controls ABO blood groups.
| 1. | A person will have only two of the 3 alleles. |
| 2. | When IA and IB are present together, they express same type of sugar. |
| 3. | Allele 'i' does not produce any sugar. |
| 4. | The gene (I) has three alleles. |
Identify the basic amino acid from the following.
1. Glutamic Acid
2. Lysine
3. Valine
4. Tyrosine
Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop.
1. Gibberellin
2. Ethylene
3. Abscisic acid
4. Cytokinin
Match the organism with its use in biotechnology.
| (a) | Bacillus thuringiensis | (i) | Cloning vector |
| (b) | Thermus aquaticus | (ii) | Construction of first rDNA molecule |
| (c) | Agrobacterium tumefaciens | (iii) | DNA polymerase |
| (d) | Salmonella typhimurium | (iv) | Cry proteins |
Select the correct option from the following:
| (a) | (b) | (c) | (d) | |
| 1. | (iv) | (iii) | (i) | (ii) |
| 2. | (iii) | (ii) | (iv) | (i) |
| 3. | (iii) | (iv) | (i) | (ii) |
| 4. | (ii) | (iv) | (iii) | (i) |
Which of the following statements is correct?
1. Adenine pairs with thymine through one H-bond.
2. Adenine pairs with thymine through three H-bonds.
3. Adenine does not pair with thymine.
4. Adenine pairs with thymine through two H-bonds.
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