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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).
Minerals :- Sulfur Food Source Widely distributed Nutritional Functional role Essential nutrient: A constituent of the essential amino acids methionine and
natural selection
Q. What are the types of antigenic agents that may constitute vaccines? Vaccines can be constituted of dead agents of disease, of inactivated toxins, of inactivated agents of d
in what part of the human body aschelminthes found?
Herbicide tolerant crops (HTC) Increased use of the herbicides plant is tolerant to (describes ecological impact eg toxic residues in soil, runoff into waterways) Ther
What is the natural habitat of E.coli? The E.coli was first recognized in the colon region of large intestine and so it was given the name "coli" (found in colon) they are coli
please enlighten me on proteins and forensics
Carbohydrates and proteins question #Minimum 100 words accepted#
Hipot is an abbreviation for high potential. Usually, Hipot is a term given to a class of electrical safety testing instruments used to confirm electrical insulation in finished ap
Diestrus- Estrous cycle This lasts 60 to 70 hours during which functional regression of the corpora lutea occurs. The uteri are small, anaemic, and only slightly contractile.
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