Mediate the movement of a single solute from one side of the membrane.pdf

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Mediate the movement of a single solute from one side of the membrane G. Glycosyation to the other Use ATP to move lons such as calcium across the membrane 1. Heat shock proteins hocising oresanelle 4. Inositol 1,4.5-riphosphate 1 isin 1. Uposome Senves as a protein intracellular receptor for Ca2+ K. Mechanically gated channela Post-translational modification of proteins involved in cell membrane L. Nuclear pore complex formation formation A molecule with hydrophobic and hydrophilic parts M.p.type pump Directs a protein to its compartment N. Sorting signal Channel protein that facilitates passage of water O. Spectrin It reaches the ER and stimulates the release of calcium P. Phospholipase C Contributes largely to membrane stability Q. Target compartmert R. Translocon 5. Uniporter Match each of the following descriptions with its term. Entyme that produces two secondary messengers A. Amphiphathic Artifial phospholipid bilayer vesicle formed from an aqueous suspension B. Antiporter of phospholipid molecules Assist with proper protein conformation C. Aquaporin D. Calmodulin A multi-unit protein complex * Vesicles are first created from this E. Cholesterol - Mediate the movement of a single solute from one side of the membrane F. Donor compartment to the other G. Glycosylation Use ATP to move ions such as calcium across the membrane H. Heat shock proteins - Frotein assembly that selectively transports substances across the DNA. 1. inositol 1,4,5 triphosphate (PP3).

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A Remarkable Conflict Between Biochemical Dogma And Radical Concept : Traditional Concept : By the 1950s it had been clearly established that oxidative phosphorylation involved the stepwise transfer of electrons through a series of carriers to molecular oxygen. But how the energy derived from these electron transfer reactions was converted to ATP remained a mystery. The general assumption was that ADP was converted to ATP by direct transfer of high-energy phosphate groups from some other intermediate. Thus it was postulated that high-energy intermediates were produced as a result of electron transfer reactions and that these intermediates drove ATP synthesis by phosphate group transfer. Concept Proposed By Peter Mitchell : The fundamental proposal of the chemiosmotic hypothesis was that the “intermediate” that coupled electron transport to ATP synthesis was a proton electrochemical gradient across the membrane. Mitchell postulated that such a gradient was produced by electron transport and that the flow of protons back across the membrane in the energetically favorable direction was then coupled to ATP synthesis

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The principal role of ATP In the cell is: A) serving as structural support. B) catalyzing chemical reactions. C) keeping the phospholipid tails of membranes aligned D) providing energy. E) functioning as a hormone. Small nonpolar molecules, such as O_2 and CO_2, enter a cell by: A) vesicle-mediated transport. B) simple diffusion. C) osmosis. D) facilitated diffusion. E) active transport. Eukaryotic cells differ from prokaryotic cells in that eukaryotic cells have: A) plasma membrance B) genetic material C) cytoplasm. D) ribosomes. E) nucleus. If a plant cell is placed in an aqueous solution that is hypertonic to the cell, the cell A) build up turgor pressure B) build up wall pressure C) undergo plasmolysis D) neither gain nor lose water E) swell and perhaps burst Solution 15 . D Providing energy Atp or adenosine tri phosphate is a energy rich molecule produced by mitochondria of our cell. These atp molecules are produced by oxidation of organic molecules, (glucose) which is then utilised by our body for various cellular functions..

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