Where NA = 6.022 x 1023. In above glucose sample, the no. of glucose molecules = 0.01 x 6.022 x 1023 = 6.022 x 1021. Remember that one mole of any substance contains Avogadro number of particles (may be atoms or molecules or ions etc.). If the substance is molecular, the number molecules will be equal to 6.022 x 1023.
The science behind the virus and the HIV life cycle help put wider prevention, treatment, and general HIV awareness into context. The immune system and HIV. The HIV virus attacks a type of white blood cell called T-helper cells (also called CD4 cells). These cells are important when it comes to having a healthy immune system as they help us fight off diseases and infections. HIV cannot grow or reproduce on its own. Instead, it makes new copies of itself inside T-helper cells.
HIV actually attaches to the CD4+ protein on the surface of these and other cells to gain entry. CD4+ can be likened to a doorway that HIV uses to enter the inner compartments of the cell. However, experiments in test tubes suggest that the CD4+ protein alone is not enough to allow viral entry into cells.ifferences Between CCR5 and Fusin. NSI (non-syncitium inducing) strains of HIV are the most common sexually transmitted form of the virus. This type of HIV preferentially infects macrophages (often found in the skin and mucous membrane) rather than T-cells.