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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.
Hardy desert shrubs - having short stem, number of branches and thick leaves. The animals of deserts are primarily arthropods, reptiles, birds and mammals. Large animals are unc
Disaccharides can be understood as follows 1.Sugars made up of the two monosaccharides held together by the covalent bond; like sucrose and lactose . 2. Type of sugar (sacch
Diarrhoeas disease: Diarrhoeas disease rank among th most leading causes of children's death in developing countries. We shall discuss two main problems in this section i.e.
Circulatory Systems in Animals In animals that have efficient circulatory systems and readily permeable vascular skins, gas exchange occurs through the integument. Thus we fin
breathing in animals
Define Nutritional Management of Anorexia Nervosa? The overall goal of nutritional rehabilitation of anorexia nervosa patients is to restore weight, normalize eating pattern, a
DIGESTION Digestive enzymes break down food particles into smaller units. You will see that the final breakdown products of protein digestion are single amino acids or small c
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Q. What are the major harms caused by vitamin A deficiency? How does this vitamin act in the physiology of vision? Deficiency of vitamin A (retinol) may corneal dryness (xeroph
Explain what is Class Osteichthyes ? Class Osteichthyes takes its name from the Greek root "osteo," referring to bone, and "ichthys," referring to fish. The bony fish have a sk
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