Which of the following is not found or observed to occur in both mitochondria and prokaryotes? binary fission 70s ribosomes atp-generating mechanism circular chromosome cell wall

Cell wall

Explanation:

The presence of a cell wall is a feature of some specific cell types. Prokaryotes such as bacteria possess the cell wall made of peptidoglycan. Cell wall makes outer most covering of their cells in these organisms.

Likewise, archaeans are also the prokaryotes that have cell walls to make the outer most covering of their cells. Among several functions, cell walls in these organisms impart them the mechanical strength and prevent the bursting of cells in a hypotonic environment.

Mitochondria are double-membrane organelles present in the cells of eukaryotes only. They are the powerhouse of these cell types and serve as a site of ATP production by the process of cellular respiration.

Mitochondria are semi-autonomous organelles and have a circular DNA. However, they do not have a cell wall around them.

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products