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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 about the Functional Properties of Proteins? It may be clear by now that functionality (as implied to food ingredients) refers to 'any property aside from the nutrition
Illustrate briefly about titanium It is generally accepted that pure titanium has little cytotoxicity and it is suggested that the plaque induced inflammation may be due to cr
describe the endoskeleton of fish?
What is demography? The scientific study of human population is termed as 'Demography'. It focuses attention on three readily observable human phenomena: a) Changes in popul
Nerves - Organisation of Nervous System Due to the pattern of distribution of neurons as described above, there are bundles of nerve fibers, called nerves, connecting the cent
Describe the structure of the teeth? How is this tissue modified to carryout its function?
Which of the following best describes the role that restriction enzymes play in bacteria? A. Restriction enzymes recognize and digest bacteriophage genomes after an initial inf
SOMATOFORM DISORDERS: The term 'Neurosis' was first introduced in 1769 by William Cullen (1710- 1790). Till later part of nineteenth century, anxiety disorders were conspicu
Q. Explain Continuous full - thickness incision? Continuous full - thickness incisions are indicated for a variety of situations outlined below. This type of incision may be us
define glycolysis.describe the various steps of glycolysis
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