A researcher is studying the transport of material within a cell. A microscopic slide prepared using rat liver tissue showed that proteins are being transported in vesicles to the Golgi complex. What is most likely the process that occurred before this transportation?

Protein synthesis in rough endoplasmic reticulum (RER) and packaging in smooth endoplasmic reticulum (SER)

Explanation:

Intracellular Protein Transport:

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.