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Define some Precautions for Measurement of pH?
1. Never touch the membrane of the glass electrode with anything else except soft tissue paper since it is fragile and is easily ruined if scratched or bumped.
2. The electrodes must not be removed from the solution unless the selector switch is at zero.
3. Never dip the glass electrode in a solution with a dehydrating action.
4. For basic solutions with pH more than 11, glass electrodes of special composition are required to avoid interference due to sodium ion.
5. The glass electrode may be covered with a sleeve to save it from jerks.
Describe Class Ophiuroidea in general way? Brittle stars have a central disc with five long, thin, flexible arms that can be detached from the body at will in times of danger.
Q. What is the part of the vascular system that performs exchange of gases and other substances with the tissues? Simply capillaries perform exchange of gases and other substan
Role of Biotic Factors Inducing Senescence Besides environmental and endogenous factors, biotic factors also play a role in inducing senescence. For example, due to an attack
electron transport chain
a) Why is it significant that ions being transported across a cell membrane be shielded from the interior of the lipid bilayer? b) Why is photosynthesis referred to as
i need to decribe, analyse and evaluate the 2cells
Explain the term - Seashore Rhythm Test This test consists of 30 pairs of rhythmic patterns. The task is to judge whether the two members of each pair are the same or different
What is Panoramic X-Ray This is one of the most vital radiological techniques in planning placement of dental implants. Not only will it give you the complete picture of the pe
What is Fern Allies - Equisetum ? The earliest land plants are thought to have evolved from green algal ancestors, since they share many features. Both green algae and plants h
Natural selection is such a powerful force in evolution because cells with even a small growth advantage quickly outgrow their competitors. To illustrate this process, consider a b
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