Polyethene glycol method is used for:
| 1. | gene transfer without a vector |
| 2. | biodiesel production |
| 3. | seedless fruit production |
| 4. | energy production from sewage |
Which one of the following pairs is wrongly matched?
1. Detergents-Lipase
2. Alcohol-Nitrogenase
3. Fruit juice-Pectinase
4. Textile-Amylase
A person likely to develop tetanus is immunised by administering:
1. dead germs
2. preformed antibodies
3. wide spectrum antibiotics
4. weakened germs
Biochemical Oxygen Demand (BOD) in river water:
| 1. | remains unchanged when algal bloom occurs |
| 2. | has no relationship with the concentration of oxygen in the water |
| 3. | gives a measure of Salmonella in the water |
| 4. | increases, when sewage gets mixed with river water |
Which one of the following is the correct match of the events occurring during the menstrual cycle?
| 1. | Ovulation - LH and FSH attain peak level and sharp fall in the secretion of progesterone |
| 2. | Proliferative phase - Rapid regeneration of myometrium and maturation of Graafian follicle |
| 3. | Development of corpus luteum - Secretory phase and increased secretion of progesterone |
| 4. | Menstruation - Breakdown of myometrium and ovum not fertilized |
Cyclic -photophosphorylation results in the formation of:
1. NADPH
2. ATP and NADPH
3. ATP, NADPH, and O2
4. ATP
Globulins contained in human blood plasma are primarily involved in:
| 1. | defence mechanisms of body |
| 2. | osmotic balance of body fluids |
| 3. | oxygen transport in the blood |
| 4. | clotting of blood |
Which of the following is a symbiotic nitrogen fixer?
1. Glomus
2. Azotobacter
3. Frankia
4. Azolla
Semiconservative replication of DNA was first demonstrated in:
1. Drosophila melanogaster
2. Escherichia coli
3. Streptococcus pneumoniae
4. Salmonella typhimurium
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