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.
39) Which of the following are organs where activation of T and B cells usually occurs: A) bone marrow B) thymus C) lymph nodes D) lymph vessels E) all of the above Look here for the answer c.9) Which of the following cell types can be infected by HIV: A) B-cells B) T-helper cells C) macrophages D) glial cells E) all of the above Look here for the answer e. 50) Corticosteriods (such as prednisone) are commonly prescribed drugs for certain immune-related disorders.