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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).
COMMON DISEASE OF CAMELS - 1 . SURRA - Surra = Rotten. Spread by biting & blood sucking flies, dropping neck, half closed eyes are common symptoms. 2 .
Classify round worms with reasons
Situation in which a closed loop negative feedback system is converted to an open loop system? A. A disease that destroys all the adenylyl cyclase and all the cAMP in the
Which of the following groups is NOT ionizable? Select one: a. Guanidinium b. Imidazole c. Phosphoryl d. Amine e. Aldehyde
Basic structural pattern of limbs The common structural pattern of tetrapod limbs is extremely clear expressed in their skeletal components and in the manner they are organiz
Problem 1: Describe the functions of: a. Glutathione transferases b. Sulfotransferases. -Describe the functions of: a. Glutathione transferases Describe the functions of
Relation between Tissue and the implant material The biologic interaction between the tissue and the implant material at an interface may result in a variety of phenomena such
CAUSES OF EXTINCTION - 1 . HUNTING - Man started hunting wild animlas for food and safety trade and fun. It may be subsistence hunting, commercial hunting and sp
If neurons are exposed to a chemical agent that prevents the NA+ channels from opening, what would happen to the neuron? What would happen if the K+ channels were inhibited? What d
what arachnid is beneficial
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