Organelles come in many different forms and work in much the same way your organs work in your body. They can do anything from excrete wastes, to storing food, to making the cell move.
Organelles that assemble proteins are called ribosomes. They can be found free-floating in the cytoplasm or attached to the endoplasmic reticulum, forming rough ER. Ribosomes translate messenger RNA (mRNA) into polypeptide chains, which then fold into functional proteins. This process is essential for cell function and growth.
I am assuming you meant organelles...if so, the organelles found in plant cells are sort of like those found in animal cells except animal cells do not contain chloroplast organelles used in plants for photosynthesis. The organelles in plant cells include: nucleus, plastids, ribosomes, mitochondria, Golgi body, endoplasmic reticulum, vacuoles, and peroxisomes.