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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
how connective tissues are like an estuary
What is meant by substrates of enzymatic reactions? Substrates are reagent molecules upon which enzymes act. The enzyme has spatial binding sites for the attachment of its s
(1) From the above gateway reaction (entry clone and destination vector); (i) which plasmid will be selected for when transformed into E.coli (A or B) and why? (ii) which an
Chromatin is made of DNA molecules associated to proteins known as histones.
Define Procedure for Testing the Presence of Sugar in Milk? 1. Take 0.1 ml of milk sample in a test tube. 2. Add 0.2 ml of resorcinol solution (0.05 gm of resorcinol in 100
“Define nosocomial infections. Discuss the factors that might influence whether a patient may acquire nosocomial infection. How might these risks be reduced?”
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Explain how early RNA molecules might have been able to respond to natural selection. Every RNA molecule might have competed with slightly dissimilar RNA molecules for nucleoti
Spermatogenesis - Gametogenesis The procedure of maturation of spermatogonia into sperms starts at puberty (about 14 years) and continues into old age. The spermatogonia that
what is copulation
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