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Nephridia of Worms
As pointed out earlier, nephridia are the excretory tubules in many invertebrates. While all nephridia open to the exterior by an excretory pore known as nephridiopore, some have their internal end closed and others open internally into the body cavity by a ciliated funnel called nephridiostome. The former type of nephridia is known as protonephridia and the latter type are the metanephridia.
Which of the following serves as a signal for the ribosome to begin translating the transcript? A. Addition of the poly a tail to the 3' end of the transcript B. Deamination
What is Centrioles in cell structure? Most cells of higher organisms contain pairs of cylindrical bodies called centrioles, which help to organize microtubules in cell division
Neurosurgery An antistaphylococcal antibiotic can decrease the incidence of infection after craniotomy. In spinal surgery, the infection rate after conventional lumbar discecto
Aging population is an important factor to be considered in implant dentistry. Life expectancy has increased significantly past the age of retirement. Social pleasures continue thr
FLUI D MOSAIC MODEL Proposed by Nicholson and Singer (1972) Proteins and lipids are arranged in a mosaic fashion. Lipids and proteins are in a semi fluid structure.
Typhoid Typhoid vaccine is recommended for travellers to developing countries in Central and South America, Africa and Asia, especially if they plan a long stay or may be livi
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The state of balance in the internal environment of the body it includes control of the water balance of the blood, body temperature, blood sugar level and blood urea level. Each o
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