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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).
Remove the crown for reuse - If the decision is made to remove the crown for reuse - The visibility is increased - Allowing for much easier removal of canal obstructions -
Antibody Structure: An antibody molecule consist of two alike light chains ( 220 amino acids each) ad two similar heavy chains (about 440-450 amino acids each) held together
What is the structure that maintains identical chromatids bound? The structure that maintains identical chromatids bound is the centromere. Cell Nucleus Review - Image Diver
The scutellum observed in a grain of wheat or maize is comparable to which part of the seed in other monocotyledons? 1. Cotyledon 2. Endosperm 3. Aleurone layer 4. Plum
Define Absorption, Storage and Elimination of Vitamin K? Dietary vitamin K, mainly phylloquinone, is absorbed chemically unchanged from the proximal intestine after solubilizat
What are the types of evaluation of lateral earth forces acting on retaining structures? This section seeks to introduce you to the evaluation of lateral earth forces acting on
main subdivision of phylum chordata
Q. Etiologic factor of diabetes? The precise etiology of diabetes is not known but multiple factors contribute to the disorder. These are reviewed herewith. Type I Diabetes
Q. List the goals of management of Type 1 Diabetes Mellitus? Goals of management of Type 1 Diabetes Mellitus: a) to keep blood sugar level as close to normal as possible.
Modalities Available for Sterilization The most accepted methods of sterilization can be classified as follows: Physical Agents: These comprise of: Sunlight Drying
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