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Q. What are some human diseases caused by bacteria and what are their respective modes of transmission?
The major human bacterial infections transmitted by respiratory secretions (cough, sneezes) and saliva drops are tuberculosis, bacterial pneumonias, whooping cough (pertussis), diphtheria, bacterial meningitis. Major bacterial diseases transmitted by blood or sexual contact are gonorrhea, syphilis. Major bacterial diseases transmitted by animal vectors are endemic typhus, bubonic plague, leptospirosis. Various bacterial diseases transmitted through fecal-oral route and contaminated foods are typhoid fever, cholera and other important bacterial infections: Hansen's disease, possibly transmitted by saliva drops and contact with injured mucosae and skin, trachoma, eye disease transmitted by ocular secretions, tetanus, transmitted when the etiological agent enters the body through skin wounds.
Male reproductive system of earthworm: Testis : There are two pairs of testis one on eachside of the body in 10th and 11th segments. They produce sperm mother cells. Seminal Ves
The boll weevil, an insect native to Mexico and Central America, is another pest of commercial cotton. When chemical insecticides were first discovered, they proved highly effectiv
Central Cell - Synergids It is the largest cell of the embryo sac, and the mother cell of the endosperm. The enlargement of the embryo sac after the last nuclear division is m
Define Spiral cleavage in brief. Pattern of cell division in the developing embryo where products of the cell divisions shift by rotating either counterclockwise or clockwise s
Explain Direct Microscopic Count - Measurement of Microbes? The most obvious way to determine microbial number is through direct counting under a microscope. In this method, a
What is salmonella typhosn Typhoid is an enteric fever, which relates to acute infection of short duration. It is caused by bacteria called Salmonella typhosn about which
What is the neuromuscular synapse? Neuromuscular synapse is the structure by which the neural impulse passes from the axon of a motor neuron to the muscle cell. This structure
Vitamin B 1 (Thiamine hydrochloride) a) Thiamine hydrochloride is a white, crystalline powder, slightly hygroscopic, of an odour resembling yeast and of bitter to taste. b)
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How have brain-imaging methods such as PET and MRI affected neuroscience research and clinical care? Techniques which capture pictures of the living human brain at work have be
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