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Osmotic Function - Essential Elements
Plant cells generally contain mineral ions 10 to 1000 times higher in concentration than the surrounding soil. That is why water enters the cells by osmosis and builds up turgor. You know that turgor maintains the shape and size of non-rigid plant parts such as leaves. Potassium is a key ion in this respect. Changes in its concentration in guard cells affect turgor and thus result in opening and closing of stomata. Turgor is also essential for the growth of plant cells.
Define the Chemical Fixation Method? Here chemical fixatives containing ethanol, acetic acid and formaldehyde etc. penetrates the cell and inactivates and immobilizes cellular
What are the consequences of iodine deficiency disorders? As discussed earlier under signs and symptoms, the consequences of IDD include: mental retardation, other defects in t
CELL MEMBRANE It is biological, thin, elastic, flexible & selective permeable membrane. Term "Cell membrane" was coined by Negeli & Crammer 1855. Term " Plasma membr
Bond specificity Some enzymes act on a particular bond (glycosidic, peptide, ester etc.). Examples: pepsin, trypsin, chymotrypsin etc. are all only acting on
What is the name of the terminal portion of the axon? The terminal portion of the axon is known presynaptic membrane. Through this membrane neurotransmitters are released into
Gastro Epiploic Artery (GE) : Gastro epiploic artery is a less popular arterial conduit now. The midline chest incision is extended to the umbilicus and the right ga
Importance of Vitamin c Vitamin C is involved in redox processes in the organisms. It is possible, that vitamin C exerts its physiological function as a redox substance in com
What is Mefloquine Mefloquine is taken once weekly, but recent reports of serious psychiatric adverse effects have prompted the manufacturer, along with the FDA, to strengthen
Class of Crustacea - Cirripedia These crustaceans are completely marine, and include the barnacles. Moa species are free living, attached to rock, and other objects. Some are
Determine the groups of soil organisms The soil organisms are classified into two broad groups viz. soil flora (related to plants) and soil fauna (related to animals) which ar
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