In humans most mechanical digestion takes place in the mouth through chewing.
No it is not, the stomach initiates protein digestion and denatures proteins. The intestines is the first site where absorption takes place.
The first portion of carbohydrate digestion in humans takes place in the mouth as amylase in the saliva starts to break down sugars.
The primary site of nutrient digestion is the small intestine, but this also takes place to a lesser extent in the stomach and mouth. The small intestine is also where the majority of digested nutrients are absorbed.
The primary site of intracellular digestion are the lysosomes.
In a human's digestive tract, the final site of digestion is the small intestine.
The chloroplasts are the organelles in which photosynthesis takes place.
The digestion (and indeed absorption) of all nutrients occurs in the small intestine. To be precise, it is the duodenum where much of the breaking down takes place. It is here where enzymes from the pancreas, as well as bile from the liver, and secreted, to aid the process of digestion.
Mouth
Protein synthesis, or translation, takes place at the site of ribosomes. Ribosomes read the genetic code from mRNA and assemble amino acids into a polypeptide chain, which eventually folds into a functional protein.
Mitochondria are the main sites. But glycolisis takes place in cytoplasm
Fusion takes place in the core, where the temperature and pressure are the highest.