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Mechanism of Stomatal Opening
It has been known for over a century that stomata open because of reversible turgor changes in the guard cells. Stomata open when turgor in the guard cells is high and close when it is low. It is clear that the turgor would increase only if the solute content of guard cells would be higher than the neighbouring epidermal cells.
Falling of solute content would decrease turgor. How do the two guard cells on swelling form an aperture? The cell wall of guard cells is peculiar because the cellulose micro fibrils which constitute the major structural feature of plant cell are arranged radially extending from the centre towards the periphery.
In an experiment, isolated chloroplast thylakoids were incubated at pH 4.0 with ADP and inorganic phosphate (Pi) added to the medium and then transferred to a medium having pH 8.0.
Nose Nose consists of external and internal parts. The inner lining of the nose contains millions of small receptors. These receptors are located on the sensory hairs.
Explain Risk Assessment Risk Assessment : The scientific evaluation of known or potential adverse health effects resulting from human exposure to food borne hazards
CONJUG A TE D PROTEINS Besides being made of polypeptides, the conjugated proteins posses additional groups, metals or ions. Consists of protein and non-protein parts.
Q. Explain the use of Benzoates acid? Benzoic acid, sodium benzoate and the parahydroxy esters (parabens) are used as preservatives. Benzoic acid and its sodium salt, sodium be
Environmental impact assessment consists of 4 phases which are as follows: (i) Organizing the job. (ii) Performing the assessment. (iii) Writing the environmental impac
It corresponds to the anterior and inferior interventricular grooves. Its right side is convex and bulges to the right ventricle. The septum has a posterior border which separates
FUNCTIONS (1 ) Cell secretion - Golgi body is concerned with secretion (export) of macromolecules. Secretion involves three steps:- (a) Golgi body receives the mat
Producers - Biotic Components Producers also called autotrophs are largely green plants that can make food from simple inorganic materials. Food refers to complex organic comp
prove oxygen is produced during photosynthesis in the presence of light
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