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Explain Particle Movement ?
Particle Movement : Particles are moved down a concentration gradient by the process of diffusion. Osmosis is simply the diffusion of water across a semipermeable membrane. We show four examples of osmosis - two with a red blood cell, and two with a plant cell. Diffusion and osmosis are vital for exchanging fluids, gases, and other substances in cells.
What is a trace element and how are they important in organisms, give an example.
What is the menstrual cycle? The menstrual cycle is the periodic succession of interactions among hormones and the organs of the female reproductive system that, after the star
Q. What is the first polar body? How different is it from the oocyte II? In oogenesis the oogonium differentiates into oocyte I (2n) and this cell enters meiosis and after fini
Q What are instances of a carnivorous and an herbivorous reptile? Iguanas are herbivorous, Snakes are carnivorous. Q. Do beings of the class Reptilia perform gas exchange i
Q. Which are the structures that are part of the nervous system? The structures that form the nervous system can be divided into the peripheral nervous system (PNS) and the cen
Determine recommended nutrient intakes by selenium? The FAO/WHO 2004 recommendation for nutrient intake for selenium by groups is given in Table. How do these recommendations c
What are the main structures within the cell nucleus? Within the cell nucleus the major structures are: the nucleolus, an optically dense region, spherical shaped, where there
F A TT Y ACIDS They are monocarboxylic organic acids (R.COOH) having a hydrocarbon chain of 4 - 30 carbon atoms. The polar carboxylic group is hydrophilic (Gk. hydro
What are stomata? How do these structures participate in the plant transpiration? Stomata (singular, stoma) are small specialized passages for water and gases there in the epid
Explain the Maintenance Requirement of nutritional needs? This is defined as 'the amount of nutrient that is needed to replace the wear and tear of the tissues within the body
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