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Yes, I would say that most cellular metabolism does occur within organelles.
The chloroplast
mitochondrion
Cellular respiration starts in the cytoplasm of the cell, and then enters the mitochondria.
Of course, it occurs in the endoplasmic reticulum.
Organelle known as mitochondria, and in minute amount within the cytoplasm.
Ribosomes
Some examples of chemical reactions that occur in the cell are cellular respiration, protein synthesis, DNA replication, and transcription.
metabolic processes or cellular metabolism
These organelles are called mitochronrion.
There are two basic kinds of cellular metabolism. One is the krebs cycle (citric acid cycle) which all aerobic organisms use to produce energy, Anaerobic metabolism can occur in several mechanisms, but is mostly commonly called "fermentation"
The mitochondria (pleural), or mitochondrion (s) perform cellular respiration, also known as oxidative phosphorylation.