There's no picture. This question is unable to be answered without a picture.
It would be the x-chromosome only, I believe.
The answer is C. In the ribosome, the protein synthesis and then transports to the endoplasmic reticulum for further transportation. For A, it often occurs in lysosome. For B, it occurs in mitochondria. For D, it occurs in cell nucleus.
Carbon-12 has 6 neutrons and 6 protons, making it 12.
Carbon-14 has 8 neutrons and 6 protons, making it 14.
It is used to date the age of things that are very old using radioactive isotopes.
