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Home Biotechnology Nitrogen Fixation and Photosynthesis See What Others Are Saying!
  • Question
  • Which of the following bacteria genus is capable of oxidizing ammonia (NH4)?


  • Options
  • A. Nitrospina
  • B. Nitrobacter
  • C. Nitrosococcus
  • D. Nitrosobacter

  • Correct Answer
  • Nitrosococcus 


  • More questions

    • 1. Which of the following vector can maintain the largest fragment of foreign DNA?

    • Options
    • A. YAC
    • B. Cosmid
    • C. Plasmid
    • D. Phage
    • Discuss
    • 2. Tonoplast is a membrane around

    • Options
    • A. cytoplasm
    • B. vacuole
    • C. nucleus
    • D. mitochondria
    • Discuss
    • 3. The size of the genome of SV 40 is

    • Options
    • A. 7.2 kb
    • B. 69 kb
    • C. 5.2 kb
    • D. 110 kb
    • Discuss
    • 4. DNA into fish is injected into

    • Options
    • A. pronuclei
    • B. cytoplasm
    • C. both (a) and (b)
    • D. none of these
    • Discuss
    • 5. The dried malt is the source of

    • Options
    • A. amylase
    • B. proteinases
    • C. both (a) and (b)
    • D. cellulase
    • Discuss
    • 6. Mitochondria can be expected most numerous in

    • Options
    • A. green cells
    • B. red blood cells
    • C. muscle cells
    • D. none of these
    • Discuss
    • 7. Plants absorb nitrates from soil and convert them into

    • Options
    • A. urea
    • B. ammonia
    • C. nitrogen
    • D. none of these
    • Discuss
    • 8. Lysosomes are associated with

    • Options
    • A. photosynthesis
    • B. respiration
    • C. storage
    • D. digestion
    • Discuss
    • 9. The primary B cell receptor is

    • Options
    • A. IgD
    • B. IgG
    • C. IgA
    • D. IgE
    • Discuss
    • 10. When a gardener takes a cutting from a plant, indicating that he has made a

    • Options
    • A. clone
    • B. mutation
    • C. new species
    • D. new variety
    • Discuss


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