"which of the following statements is true of aids? if a person's cd4 count is above 200, it means that he or she has aids. aids is inherited. if a person is tested hiv-positive, it means that he or she has aids. aids is the final stage of hiv infection."

AIDS is the final stage of HIV infection

Explanation:

Having an HIV positive result does not mean  having AIDS (acquired immunodeficiency syndrome). That only signals that you have a HIV virus that kills CD4 T-cells in your body. As time passes by, if there are many CD4 T-cells killed, the body looses its ability to fight infection. When this happens, HIV can advance to AIDS. HIV infection advances to AIDS when there are less than 200 CD4 T-cells per cubic millimeter of blood. If you have less than 200 CD4 T-cells, it means you have a very weak immune system, and you can easily get very sick.

the sea slugs belong to the same class

regulation of gene expression. gene expression can be regulated by various cellular processes with the aim to control the amount and nature of the expressed genes. these regulatory proteins bind to dna and send signals that indirectly control the rate of gene expression

explanation: