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Q. What is the virus that causes flu? Why doesn't the body produce permanent immunity against that virus? How does the vaccine against flu work?
Flu is a disease caused through the influenza virus, a highly mutant DNA virus, Due to the high mutation rate of the virus that forms many different strains flu always presents epidemic features in affected populations and people may have several flu episodes during life (the immune response made from previous infections is not proficient in future infections).
The injection against flu is a vaccine made of attenuated virus of three different strains. Each year the World Health Organization (WHO) researches and determines which the strains that should compose the vaccine are. This is a approach to face the high mutation rate of the virus.
What is an analogy for a smooth endoplasmic reticulum? Endoplasmic reticulum (ER) is such as a manufacturing plant, like a factory, where proteins and lipids are made. This is
Protozoans ingest food by phagocytosis, and consequently, the ingested food is surrounded by a plasma membrane creating a food vacuole, or phagosome. Digestion does not start until
Q. Describe the phylogenetic system of classification? 1) Hutchinson believed in Monophyletic origin of Angiosperms from a hypothetical group, which he' named, as Proangiosperm
Which of the following is true for the epithelial cells of the kidney proximal tubule? A. The sodium-glucose co-transporter in the luminal membrane is responsible for the net f
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Explain about the term- Chroma Chroma is the relative purity or strength of the spectral colour and its numerical value extend from (/0) for neutral colours to (/8) for the stro
Q. Pathology of aortic regurgitation? In Post Inflammatory situations scarring and retraction of valve cusps lead to aortic regurgitation. Varying degrees of commissural fusion
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Why are the recombinant DNA technology and the nucleus transplantation technology still dangerous? A recombinant DNA technology and the nucleus transplantation technology (clon
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