Answer:
stomach
Explanation:
stomach does not make enough intrinsic factor protein, the intestine cannot properly absorb vitamin B12.
medlineplusgov
These products are often proteins, but in non-protein<span> coding genes such as </span>Several<span> steps in the </span>gene expression<span> process may be modulated, including the The stretch of </span>DNA<span> transcribed into an </span>RNA<span> molecule is called a transcription unit </span>
I believe the answer is A hoped this helped
That would be the Endoplasmic Reticulum my good friend hope this helped... :D