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Shapes of viruses
Viruses occur in a wide variety of shapes. Some are spherical or polyhedral . Some are helical appearing cylindrical or rod-like and other are complex. Viruses are usually classified on the basis of their hosts, as for example, animal viruses (infecting animal cells), plant viruses (infecting plant cells) and bacteriophages (infecting bacterial cells).
Figure: Different shapes in viruses: (a) Spherical; (b) Helical, and (c) Complex
Rheumatic heart disease was the predisposing cardiac lesion for IE in 20 to 25 per cent. In patients with rheumatic heart disease, endocarditis occurs most frequently on the mitral
Q. What are the bacteria? Bacteria are unicellular and prokaryotic beings. Bacteria have simple organization they present an exterior cell wall, plasma membrane, circular DNA w
Occurrence of folic acid Folic acid is an active principle widely occurring in the animal and vegetable kingdom. Richest sources are liver, dark green leafy vegetables, bean
green gland in prawn
Q. Important conditions for malabsorption syndrome? Let us now discuss a few important conditions grouped collectively under the term of malabsorption syndrome. These are:
Explain about the Mucor - Fungi? Mucor is present as a food contaminant. It resembles Rhizopus in life history and colonies appear just like Rhizopus. However, important diffe
Q. What is an illustration of gene control? An elegant instance of gene control in bacteria is operon system. A cluster of genes which is responsible for synthesizing a particu
Aspect of Tolerance and Dependence: Drug-abusers are said to be psychologically dependent upon certain drugs. Drugs also induce clear physical dependence in the chronic users.
Are environmental phenotypical changes transmitted to the offspring? Changes caused on phenotypes by the environment are not transmitted to the offspring (unless their primary
3. Which substance(s) crossed the dialysis membrane? Support your response with data-based evidence.
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