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State the major function of the cell membrane
A major function of the cell membrane is to maintain the characteristic integrity of the cell by forming a selective barrier between the cell and its surroundings. It regulates the movement of various molecules into and out of the cell. For this purpose, the cell membrane is endowed with various transport processes. In general, nonpolar molecules are transported more readily across the membrane than polar or charged molecules. While some substances can diffuse by passive diffusion across the membrane (e.g. water), substances like glucose are transported by facilitated diffusion, involving specific proteins in the membrane. Most biomolecules are, however, transported into and out of the cell in an active process involving expenditure of energy.
In studies of human body, which of the below terms is used to describe a very rapid heart rate or pulse rate? Is it: a) Tachycardia b) Bradycardia c) Cardiosis d) Myoc
What are the processes involved in the preparation of plant tissue for free hand sectioning?
How can an organism that once underwent contact with an antigen be immunized against future infections by the same agent? This phenomenon is known as immune memory . When an a
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KIDNEY S - Origin . They develop from the mesoderm of the embryo. The kidneys secrete three hormones: renin, erythropoetin and calcitriol. (i) Renin . Whenever the rat
Which of the below determines the major difference between bryophytes (pron: bry-oh-fites) and tracheophytes (pron: tray-key-o-fites)? a) Tracheophytes can make their own food
Q. Use of Neurotensin in consciousness? Although little is known about the role of this peptide during the sleep-wake cycle, it has recently been shown that neurotensin injecti
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Q. What is the function of mineral salts in the creation of electric tension (voltage) at the cellular level? The electric activity of the cell, for example, in neurons, depend
how to make a assignment on recent research on marine microbiology
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