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.
1 an HIV virus enters one of your CD4 cells, 2  the HIV converts the CD4 cell into an HIV-making factory, and. 3  tries to make as many copies of itself as possible. 4  When the HIV has used up all it can from the CD4 cell, the CD4 cell dies, while all the new HIV copies swim away to find more CD4 cells to attack.