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Select all that are true or correct regarding a buffer: alternately donating and accepting ions a set of chemicals that work together to resist pH change often a weak acid or base and a salt increases OH- ions or H+ ions as needed cannot neutralize an infinite number of ions can neutralize acid rain because water is buffered
Surface Run-off - Causes of Water Pollution The surface run-off from cultivated lands where inorganic fertilisers, pesticides, insecticides and rich manure are applied and sol
PROTOPLAST Cell without cell membrane (Henstein) It contains 1 or more vacuoles. In mature plant cells protoplast forms a peripheral layer called Primordial utricle.
Uptake of Ammonia Ammonia (NH 3 ) diffuses freely across biological membranes according to its concentration gradient. However, ammonium (NH + 4 ) ion requires a specific tra
Dormant Vegetative Structures You have learnt that light a period of chilling or application of gibberellin often breaks seed dormancy and stimulates seed germination. Vegetat
Liver necrosis?
There is no splitting of the centromere. The kinetochore fibers contract and the spindle or pole fibers elongate , As a result homologous chromosomes of each pair rather than
what are characteristics of protozoa?
Sublimation is the process by which solid water changes directly to vapour phase without passing through the intervening liquid phase. The gradual disappearance of flakes of ice
X-Linked Traits in Humans Let us first examine traits determined by genes on the X-chromosome, or the X-linked traits. The human X chromosome contains many genes that are requi
Wound healing and formation of woven bone Stage 1: Wound healing and formation of woven bone (callus) (2 to 6 weeks) The ability of the body to respond to the "trauma" indu
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