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 attacks a specific subtype of white blood cells, the CD4 T cells. There are several different types of white blood cells, each of which is responsible for fighting specific types of infections (for example, viruses, bacteria, fungi, parasitic, etc.). CD4 T cells help the other types of white blood cells fight infection. When HIV infects a cell, it can survive there for many years, protected from antiviral medications. It slowly replicates, and its offspring infect other cells. Eventually, the virus takes over all of the cell functions in order to make more viral particles, leading to cell death.