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Various integral proteins have multiple membrane-spanning -helices. Bacteriorhodopsin, a protein found in a photosynthetic bacterium captures the energy from light and uses it to pump protons diagonally the bacterial membrane. Like a numerous other integral proteins, like as the G protein-coupled receptors & the polypeptide chain of bacteriorhodopsin loops backwards, forwards diagonally the lipid bilayer seven times. Each of the seven transmembrane -helices is associated to the next through a short hydrophilic region of the polypeptide chain which is exposed either on the cytosolic or extracellular side of the membrane. Another multiple membrane spanning proteins have from two to up to 14 transmembrane helices. For instance, the anion exchange band 3 protein of
figure: Integral membrane proteins. (a) One membrane-spanning region (e.g. glycophorin); (b) multiple membrane-spanning regions (e.g. bacteriorhodopsin).
The erythrocyte plasma membrane which transports HCO - and Cl- across the membrane loops forwards and backwards across the lipid bilayer up to 14 times.
what is the general characteristic of aschelminths
a) What additional substances does a plant need to make amino acids and proteins from glucose? b) Where do these substances come from? (a) To make amino acids
Explain Fluids Fluids: Fluid diets are given to patients with more advanced dysphasia or fractured jaws. The diet may include fruit juices, thin strained porridge with milk, e
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What is Specific defence mechanism Specific: These relate to specialized cells located throughout the body which respond to invasion of foreign materials/microorganisms su
Explain the Recommended Dietary Allowances (RDA)? The recommended dietary allowances are estimates of nutrients to be consumed daily to ensure the requirements of all individua
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Q. Explain about Malnutrition Related Diabetes Mellitus? This type of diabetes has been categorized as a separate entity. 'if is 'Men seen commonly in developing countries, 1n
what is respiration of plants and its types
Which one of the following does not follow the central dogma of molecular biology? 1. Pea 2. Mucor 3. Chlamydomonas 4. HIV HIV is the central dogma of molecular bi
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