The correct answer is endoplasmic reticulum. <span> Any nucleated cell contains MHC class I proteins which present cytosolic peptides. For example, during the intracellular microorganism infection such proteins are degraded in the proteasome, then degraded peptides are internalized in the endoplasmic reticulum and there associated with MHC-I molecules which are freshly synthesized. MHC-I/peptide complex is displayed on the cell surface and ready to interact with T lymphocytes.</span>
T<span>he </span>formula for cellular respiration<span> is glucose plus oxygen yields carbon dioxide, water and ATP, written as C6H12O6 + 6O2 --> 6H2O + 6CO2 + ATP.</span>
Eukaryotes are more complex they have a nucleus prokaryotes do not have a nucleus humans fungi plants and protists fall under Eukaryotes and bacteria is an example of prokaryotes
