Radioactive isotopes Radioactive isotopes are never incorporated into organic compounds. do not occur naturally. are frequently added to foods as nutritional supplements. can be used in conjunction with PET scans to diagnose diseases.

can be used in conjunction with PET scans to diagnose diseases.

Explanation:

The radioisotopes are used along with the position emission tomography that are labelled with the tracers like 13N, 18F and 150. These are radioactive forms of the natural elements these elements can pass through the body and can be detected by the scanner.

This technique can be used to diagnose the blood flow, blood volume, pH of tissue, metabolism of sugar and it's metabolism can be useful for diagnosis of hypertension and diabetes. This technique is also useful for diagnosis of malignant tumor cells responsible for cancer.

scientists have discovered that hiv does not cause aids by the virus's direct effect on the host's immune cells, but rather through the cells' lethal influence on one another. researchers from the gladstone institutes have revealed that hiv does not cause aids by the virus's

i think the answer is g1

hope i

-lavira: )