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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.
What are the main constituents of the earth's atmosphere in our time? The present atmosphere of the earth is constituted mostly of molecular nitrogen (N2) and molecular oxygen
Explain the Autonomic neuropathy It leads to dry skin due to decreased sweating. Dryness of the skin leads to cracking which makes entry of infection in to the deeper plane eas
What is the defense mechanism that begins to work when inflammation fails to stop an infection? If the inflammatory attack is not enough to halt the infectious process the body
GASES There are 4 gases in the protoplasm which remain dissolved in its free water. These 4 gases are follows- CO 2 > O 2 > N 2 > H 2
Q. What are the moderate intensity exercises? - Walking for 1/2% hr or jogging - Biking leisurely for 1/2 hr. - Playing tennis, swimming, gardening, golfing - Vacuumin
Which one of the following is not a lateral meristem? 1. Intrafascicular cambium 2. Interfascicular cambium 3. Phellogen 4. Intercalary meristem Intercalary m
Definition of osmosis A) The best explanation of osmosis is 'The movement of water from a dilute solution to a concentrated solution across a partially permeable membrane'.
Protein Stabilized Food Emulsions Many food products are emulsions (eg. milk cream, ice creams, cream, butter etc.) and protein constituents often play a major role in the stab
Must account for both food AND light as zeitgebers Because of the continuous light / dark periods of the year; light not always able to act as a zeitgeber. Food
S n ake bite Biting by a poisonous snake is manifested by clinical findings of local swelling and nervous symptoms. E t iology: The poisonous snakes have different typ
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