You can figure this out. Determine the molecular weight of glucose- that is the weight in grams of 6.02x10^23 molecules (one mole of glucose). Then weigh one sugar cube- that is the weight of your unknown number of molecules. Divide your sugar cube weight by the molecular weight- that gives you the percentage of a mole that your sugar cube contains.
HIV is the cause of the spectrum of disease known as HIV/AIDS. HIV is a retrovirus that primarily infects components of the human immune system such as CD4 + T cells, macrophages and dendritic cells. It directly and indirectly destroys CD4 + T cells.
Enmeshed in the viral envelope is a complex HIV protein called env. Two glycoproteins make up env and these protrude from the virion. The cap of the protein is called gp120 and the stem is gp41. For HIV to enter a host cell, it must first use gp120 to attach to a CD4 receptor.The CD4 receptor is found on CD4 T-cells and macrophages. The host cell has neutralising antibodies that can block gp120âs attachment, but because HIV is a new virus, there is some lag time in producing enough antibodies to prevent this.or HIV to enter a host cell, it must first use gp120 to attach to a CD4 receptor. The CD4 receptor is found on CD4 T-cells and macrophages. The host cell has neutralising antibodies that can block gp120âs attachment, but because HIV is a new virus, there is some lag time in producing enough antibodies to prevent this.