PMT 2009 Multiple Choice Questions (Part 9 of 10)

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  1. Polyethylene glycol method is used for
    1. Gene transfer without a vector
    2. Biodiesel production
    3. Seedless fruit production
    4. Energy production from sewage
    • Answer: a
  2. Which one of the following pairs is wrongly matched
    1. Detergents-lipase
    2. Alcohol-nitrogenase
    3. Fruit juice-pectinase
    4. Textile-amylase
    • Answer: b
  3. A person likey to develop tetanus is immunized by administering
    1. Dead germs
    2. Preformed antibodies
    3. Wide spectrum antibiotics
    4. weakened germs
    • Answer: b
  4. Biochemical Oxygen Demand (BOD) in a river water
    1. Remains unchanged when algal bloom occurs
    2. Has no relationship with concentration of oxygen in the water
    3. Gives a measure of salmonella in the water
    4. Increases when sewage gets mixed with river water
    • Answer: d
  5. Which one of the following is the correct matching of the events occurring during menstrual cycle
    1. Ovulation: LH and FSH attain peak level and sharp fall in the secretion of progesterone
    2. Proliferative phase: Rapid regeneration of myometerium and maturation of Grasfian follicle
    3. Development of corpus luteum: Secretory phase and increased secretion of progesterone
    4. Menstruation: Breakdown of myometrium and ovum not fertilised
    • Answer: c
  6. Cyclic photophosphorylation result in the formation of
    1. NADPH
    2. ATP and NADPH
    3. ATP, NADPH and O2
    4. ATP
    • Answer: d
  7. 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
    • Answer: a
  8. Which of the following is a symbiotic nitrogen fixer
    1. Glomus
    2. Azotobacter
    3. Frankia
    4. Azolla
    • Answer: c
  9. An example of axile placentation is
    1. Argemone
    2. Dianthus
    3. Lemon
    4. Marigold
    • Answer: c
  10. Semiconservative replication of DNA was first demonstrated in
    1. Drosophila melanogaster
    2. Escherichia coli
    3. Streptococcus pneumoniae
    4. Salmonella typhimurium
  • Answer: b