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VACUOLES
Some animals cells may have one to a few small fluid filled vacuoles.. Plants cells in general possess one or a few large vacuoles. Vacuoles of animals cells arise from golgi complex and are hence a part of the cytoplasmic endomembrane system . Obviously, these are bound by the same trilaminar units membrane these serve for storage and transport of dissolved nutritive secretory excretoty substances . and for the maintenance of an intracellular turgor pressure some freshwater animals cells possess one two or a few contractile vacuoles for osmoregulation such a vacuole is bound by a simple and delicate condensation membrane different from typical unit membrane.
Which of the following variations on translation would be most disadvantageous for a cell? A) translating polypeptides directly from DNA B) using fewer kinds of tRNA C) having only
Explain the effect of Deficiency of pyridoxine? A deficiency of vitamin B6 alone is uncommon because it usually occurs in association with a deficit in other B-complex vitamin
Explain about bimodal diurnal pattern Animals that show a bimodal diurnal pattern have their activity controlled by two biological clocks - one that controls the time of onset
Measures of Evenness The maximum Shannon-Wiener index for a given number of species can be calculated as: The minimum Shannon-Wiener index for a given data set can be c
Adenosine triphosphate (ATP) is a general form in which the energy is stored in living systems; comprises of a nucleotide (with ribose sugar) with three phosphate groups. Energy c
Explain Technical factors influencing food production? Improvement in technology has a significant impact on productivity. Improvements may occur in seed production, fertilizer
Hazards of O 2 Therapy Exposure to greater than 60 per cent O 2 , for a period of more than 36 hours, or exposure to 100 per cent 0, for a period of more than 6 hours, res
How do plants solve the problem of transporting substances throughout their tissues? In bryophytes the substance transport is completed by diffusion. In tracheophytes (pteridop
What is the heterotrophic hypothesis on the origin of life? As per to the heterotrophic hypothesis the first living beings were very simple heterotrophic organisms that is not
Pupillary reflexes There are two types of reflexes which control the pupillary reaction-the light reflex and near reflex. When light is shown on one eye, there is a constrictio
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