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ENDOPLASMIC RETICULUM (ER)Eucaryotic celIs have two major compartments- nucleus and cytoplasm. Cytoplasm was known to have no structure until the discovery of electron micrsscope. That cytoplasm is permeated by a membranous network called endoplasmic reticulum (ER), was revealed only after the introduction of electron microscope. Endoplasmic reticulum is a three dimensional network of membrane channels which constitutes more than half of the total membrane of the cell, ER is a highly folded and convoluted structure and forms a single continuous sheet enclosing one continuous sac. The interior of the sac is called "cisternal space" or "ER lumen". This is separated from the cytoplasm also called cytosol by a single membrane which mediates the communication between these two compartments. ER provides the cell with a compartment for storage of substances to be kept separate from cytosol. In addition, it has a key role in the biosynthesis of macromolecules. ER is a double membranous organelle which consists of interconnecting flattened sacs called cisternae or interconnected tubules or vesicles. Cisternae are temporary storage sites for nutrients (Figure shown below).
Define about the Types of indicators? The various types of indicators used are: (i) Acid-base indicators (ii) Redox indicators (iii) Metal ion indicators (iv) Preci
What is Schistosomiasis? Explain in brief. A disease cause by the trematode parasite Schistosoma found around the world. Numerous species are responsible for diseases ranging f
Q. Dietary considerations oesophagitis? The dietary considerations for this condition are the same as in oesophag it is. The patient should be recommended to: • eat smaller
Reasons for Uneven Distribution of Power The causes for uneven distribution of the power of regeneration among animals are not noticeably known. From a survey of the regenerat
Define Regulation and Excretion of sodium and chloride? Renal excretion and retention of these elements is closely regulated. The total content of body sodium especially the co
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Class of Crustacea - Branchiopoda These are small fresh water crustaceans. The trunk appendages are flattened and leaf like and are helpful for locomotion also respiration he
Explain Energy requirement during tuberculosis Energy : The criteria to establish the energy intake is the body weight status coupled with the rise in body temperature. Con
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State the term - Migraine Stroke Since the late 1800s, physicians have recognised that migraine attacks may lead to infarcts and permanent neurological deficits. Such migraine
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