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Osmotic Function - Essential Elements
Plant cells generally contain mineral ions 10 to 1000 times higher in concentration than the surrounding soil. That is why water enters the cells by osmosis and builds up turgor. You know that turgor maintains the shape and size of non-rigid plant parts such as leaves. Potassium is a key ion in this respect. Changes in its concentration in guard cells affect turgor and thus result in opening and closing of stomata. Turgor is also essential for the growth of plant cells.
Oxides of nitrogen: These include nitrogen monoxide (NO) and nitrogen dioxide (NO2). NO is a colourless, odourless and inert gas but like CO it can also combine with
Effects on Materials - Air pollutants Most air pollutants are reactive chemicals, so they react with most of the substances around. You may recall from your chemistry lessons
Why are most ammoniotelic beings aquatic animals? Aquatic animals, like crustaceans, bony fishes and amphibian larvae, usually are ammoniotelic since ammonia diffuses more easi
Which of the following is true for a toe corticospinal interneuron that produces action potentials during movements of the big toe of the left foot? A. A portion of its axon is
Define Burette - Nutritional Biochemistry A burette is a vertical cylindrical piece of laboratory glassware with a volumetric graduation on its full length and a precision tap,
how is urea formed in the human body?
Companion cells are the specialized cells in the phloem which load sugars into the sieve elements and help to maintain a functional plasma membrane in the sieve elements.
Q. Supportive Therapy for diabetes patient? Certain foods, part of food or food components have been found to be beneficial in managing hyperglycemia. Most of these have been i
Pollution - Environmental Pollution Pollution refers to any undesirable change in the physical, chemical or biological characteristics of our environment, i.e. air, water and
What is Metabolism ? Metabolism is usually defined as the sum of the chemical processes required to sustain life. These processes, called metabolic pathways, are catalyzed by
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