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Which of the following is not true regarding the complement system?Answer This system involves a group of at least 20 proteins found in the blood plasma. During an infection, one protein in this system activates the next in a cascade of reactions. Some components of this system stimulate eosinophils to release histamine. Activated components of this system adhere to bacterial cell walls and then put holes in these cell walls. Some components of this system stick to the walls of bacterial cells, marking them for phagocytosis.
Why is it advantageous to have weak hydrogen bonds among complementary bases and strong covalent bonds among phosphate and Deoxyribose groups in a DNA molecule? The hydrogen bo
(a) Find the electric potential, taking zero at infinity, at the upper right corner (the corner without a charge) of the rectangle in the figure. (Let y = 3.7 cm and x = 6.7 cm.)
a) Why are grasshopper and Drosophila said to show male heterogamity? Describe. b) Define female heterogamity with the help of an example.
Anthrax Anthrax is primarily a disease of the herbivores and occurs in almost all parts of the world. The disease has declined recently throughout the world as a result of the
Chronic Mitral Regurgitation Chronic mitral regurgitation may have different aetiological factors: 1) Rheumatic 2) Degenerative-myxomatous malformation 3) Infective
Q. How is excretion done in fishes? Fishes have a pair of kidneys that filtrate the blood, bony fishes excrete nitrogen as ammonia NH3 (they are ammoniotelic) and cartilaginous
Alterations occurring in egg The quality, flavour, composition and functional properties of eggs are adversely affected more rapidly and to a greater extent by the speed and co
Inspiration decreases the pressure in the central veins and thus increases the pressure gradient between the peripheral and central veins thus augmenting venous return. Skeletal mu
Which of the following is true for exocytosis? A. During exocytosis in skeletal muscle cells, there will be release of calcium ions from intracellular vesicles in the sarcoplas
EXCRETIO N IN EARTHWORM - Main organs are nephredia, pharyngeal, integumentary & septed nephredia. Main are septal nephredia situated on septa.Nephrostome present. Body
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