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 infection starts when the virus is transmitted through contact with infected body fluids, such as blood, semen, or breast milk. HIV targets the immune system and invades white bloods cells called T helper cells. These are cells that fight infection. By entering your bodyâs cells, the virus hides from your immune system. After the virus invades these cells, it replicates inside of them.