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In terms of western medicines, over 3000 antibiotics - including penicillin and tetracycline - are obtained from micro-organisms. Another product of micro-organisms i.e. cyclosporin was developed from a soil fungus. It revolutionized heart and kidney transplant surgery by suppressing immense reactions. Many micro-organisms have their own antibiotics and scientists have not yet been able to fully identify their potential uses. Biotechnology can now help to isolate useful genes and transfer them to different species to produce substances such as enzymes required in large quantities for curative purposes. Unicellular bacteria also produce the antibiotics such as gramicidin, olymyxin B and bacitracin respectively. Some micro-organisms (fungi, actinomycetes and bacteria) are used to transform chemically synthesized steroid hormones to resemble natural hormones for clinical use.
Thickness and toughness of plant walls are increased by deposition within original cellulose wall, of a substance called as lignin. Process of deposition is called: a) Lignific
What is Plastids? The most obvious difference between plant cells and other eukaryotic cells is that cells of most plants contain unique organelles called plastids, which inclu
It is important to explain to the patient about importance of taking treatment regularly. In case he misses the dose or takes medicine or insulin irregularly, explain the side effe
How does the vegetal stratification of an ecosystem influence the biological diversity? The vegetal stratification of an ecosystem, as the strata of the Amazon Rainforest, mak
Explain Food Applications of gum karaya The water absorbing and water-holding capacity of Karaya, together with an excellent acid compatibility made it suitable for its use
What is the function, other than protection, of the ribs? The ribs help to alter the volume of the thorax during breathing movements.
Q. How do embryos of placental mammals excrete nitrogen wastes? Placental animals including embryos and excrete urea, In the adult placental mammal urea is excreted through the
ASPIRIN - It is acetylsalicyclic acid (C 6 H 4 (OCOCH) 3 CH 3 ). It changes in salicyclic acid in body. It is analgesic, antipyratic (fever reducing), anti inflamma
In pet rabbits, brown coat colour is recessive to black coat colour. A black female rabbit gives birth to four black-coated and three brown-coated baby rabbits. What can be deduced
FUNCTIONS OF SKELETON - 1. Support. 2. To give shape to the body. 3. Protection of different organs. 4. Site for muscle attachment. 5. He
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