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What is Passive Transport?
Passive Transport: Specialized proteins called permeases also move specific substances across the cell membrane in a process called carrier transport. If these molecules function without requiring chemical energy, the passive transport is called facilitated diffusion. Substances cross the cell membrane in the same direction as they would by diffusion.
Another passive transport mechanism consists of gated channels, proteins that allow certain substances to cross the cell membrane, either permanently or following a chemical or electrical stimulus. An example of passive transport: glucose enters red blood cells about 100 times faster than would be expected from simple diffusion. This process apparently does not require energy.
Factors Influencing Lipid Oxidation Food lipids contain a variety of fatty acids that differ in chemical and physical properties and also in their susceptibility to oxidation.
Coarse fish reach or lowland course zone This zone corresponds to the lower course of the river. Here the river is deep and slow moving. Its sluggish flow results in the depos
How CAMPYLOBACTERIOSIS occurs in humans C. jejuni frequently contaminates raw chicken. Survey shows that 20-100% of retail chickens are contaminated. Many healthy chickens car
Dormancy - Plant Growth Substances Dormancy can be defined as a state of suspended growth and metabolism. When most plants are exposed to seasonal periods of very inclement we
Cell Theory The term cell was first used by an English cytologist, Robert Hooke (1665) not for unit protoplasmic masses, but for the well defined and empty compartments, he obs
Determine Factors affecting Zn Absorption - Micro Minerals? In the last unit you have studied that absorption of various minerals (bioavailability) is influenced by number of f
Technique: Careful re-opening of sternum and release of steinum from the underlying adhesion is done. Femoral artery and vein are exposed for going on femoro fenioral bypass
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
Q. Write the definition of counselling? The counselling process, involves various steps in a sequence as given below: 1. Rapport-Building 2. Locating the Problem 4. Pl
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