CHU An individual with a protein deficiency typically experiences increased susceptibility to illnesses, muscle and joint pain, and difficulty
concentrating. Why does a protein deficiency cause such diverse symptoms?
O A. because proteins are the primary source of energy for many different cell types
OB. because the membranes of Immune, muscle, and nervous system cells consist entirely of proteins
Ос. .
because the only role of proteins is to provide the enzymes that all cells need to function
OD
because Immune, nervous, and muscle system cells require proteins for structure and regulation
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I think option b is correct

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.