Which of the following best explains how viruses cause disease? A. The virus particles ingest cells in order to disrupt their processes. Ingesting cells allows viruses to
continue to replicate.

B. The virus particles digest parts of the host cell mechanism to create more viruses. The cell is left
without means to replicate.

C. The virus particles infect host cells and use the host cell's machinery to create more viruses. This
disrupts the host cell's processes.

D. The virus particles invade
host cells and use the host cell's machinery to create many more host
cells. This causes overproduction of cells.

C. The virus particles infect host cells and use the host cell’s machinery to create more viruses. This disrupts the host cell’s processes.

Pro insulin undergoes extensive posttranslational modification along the production pathway .

answer: carbon 14 can only be used to determine the age of the organisms that were once living, and igneous rocks are non living.

explanation:

carbon 14 dating is used to determine the age of the sample by estimating the amount of carbon 14 present in the sample and then comparing it with a reference standard.carbon 14 is a isotope of carbon which is radioactive and unstable. carbon 14 is assimilated by all plants and animals throughout their life from carbon dioxide. however, one the organisms die they stop this assimilation and the carbon 14 content starts to decrease.by knowing how much of carbon 14 is left in an organism after his death, one can estimate the age of the organism. the materials whose age can be estimated by carbon 14 method are the organic compounds. however, some inorganic compounds such as aragonite   shell can also be dated.however, if we consider the igneous rocks it is a non living component which never accumulated carbon 14 in it and thus, we cannot use carbon 14 dating method to estimate its age.