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A pure phospholipid bilayer with its hydrophobic interior, is permeable to water and gases such as O2, CO2, N2 and small uncharged polar molecules such as urea, ethanol, but is impermeable to large uncharged polar molecules such as glucose, ions (Na+ , K+ , Cl-, Ca2+ ) and charged polar molecules instance for amino acids, ATP, glucose 6-phosphate. The initial group of molecules can cross a biological membrane unaided and without an input of energy, whereas the latter group requires the presence of integral membrane transport proteins and, in many cases an input of energy to travel by the otherwise impermeable membrane barrier. Thus the plasma membrane and the membranes of internal organelles are selectively permeable barriers and maintaining a distinct internal environment.
Explain Other lipids in biological compound? Other Lipids : Another important type of lipids are the steroids, with a basic structure consisting of four interconnecting carb
peptide bond
Define Sample Titration - estimation of vitamin c in a solution? Take the given unknown solution provided to you in a 100 ml volumetric flask. Dilute the sample ascorbic acid s
BLOOD - Blood is a mobile connective tissue composed of a fluid, the plasma and the cells, the blood corpuscles. Blood is basis of life. Blood is the softest tissues
What do alcohol and illicit drugs do to the brain Whether its alcohol, nicotine, prescription painkillers, heroin, or cocaine addictive substances change the brain in fundament
Plasma membrane and cell wall is not the similar thing. Plasma membrane, also known as cell membrane, is the outer membrane common to all living cells and it is made of a phospholi
Competence of Larval Tissue or Multiple Responses The responsiveness of different larval tissues to thyroxine is markedly different. The tissues of the tail becomes necrotic
55yrs old woman had burns and has lost 6% body fluid.She weighs 50Kg.How much fluid does she need to replace the lost fluid.
What is fixism? The Fixism is the theory about the diversity of life on earth that affirms that the current existent species were identical to species of the past and came out
Q. How are artificial and natural pearls created? Pearls are made from small strange particles that deposit between the mantle and the shell of the oyster. These particles trig
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