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What is the basic structure of the HIV virus? What is the function of the glycoproteins of its envelope?
HIV is an RNA virus. In its core there are two strands of RNA and reverse transcriptase molecules. The core is covered by a capsid, a layer of proteins. The capsid then is covered by an envelope having glycoproteins and lipids.
The glycoproteins of the HIV envelope are located on the outer surface of the virus and they are responsible for the recognition of the cells to be infected (the HIV host cell is the CD4 lymphocyte) and for the adhesion of the virus to the cell membrane. (CD4 is a receptor glycoprotein of the outer membrane of some lymphocytes).
Although there are differences in interpretation of the evidence, it is generally accepted that human biological evolution has not been a linear progression from one species to the
List and briefly describe the mechanisms that prevent acid-base imbalances from appearing in the body. In addition, indicate where each mechanism functions most significantly.
Define the Operations of a Public Nutritionist? A public nutritionist can perform the following: In the hospital-based set up, she is a part of the team delivering thera
MENSTRUAL CYCLE - It occurs only in Primates. Start at the age of 13 yrs. upto menopouse. During this period, generally one egg is released every 28 dyas or so alternately f
respiration.
Describe how a phagocyte destroys bacteria. The phagocyte forms a pouch in its cell membrane and engulfs bacteria in the pouch. It then pinches off the pouch to produce a vesi
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