Multiple Choice QuestionsWhich one of the following natural polymers is found both in insects and fungi?
Pectin
Chitin
Cellulose
Suberin
B.
Chitin
The natural polymer present in both insects and fungi is chitin. It is a long chain polymer of N- acetyl glucosamine, a derivative of glucose. It is a characteristic component of cell walls of fungi, the exoskeletons of arthropods like crustaceans and insects, the radulae of molluscs and beaks and internal shells of cephalopods.
Which one of the following antibiotics kills bacterial cells by inhibiting the polymerisation of peptidoglycan?
Aminoglycosides
Fluoroquinolones
Quinines
Penicillins
Which one of the following organisms is not used as a biocontrol agent?
Bacillus sphaericus
Trichoderma viride
Bacillus thuringiensis
Bacillus subtilis
Which one of the following insecticides is of plant origin?
Ecdysone
Rotenone
Parathion
Malathion
Curdling of milk in small intestine occurs due to the action of
trypsin
erypsin
rennin
chymotrypsin
A simple technology has been developed in India for plant breeders and farmers to use two plants as biofertilizers for growing rice. These are
Azotobacter and Rhizobium
Chlorella and Spirulina
Azolla and nitrogen fixing blue-green algae
Riccia and Marchantia
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