Commensalism is the term you are looking for
C. Channel proteins bind to molecules too large to diffuse into or out of the cell, and allow them to pass.
Answer:
b is probably the answer because endosymbiont theory makes the most sense for building prokaryotic cells to eukaryotic cells.
Your right J is sexual reproduction, and K is asexual reproduction. But sexual reproduction requires the presences of a male and a female. But other asexual reproduction doesn't, and just requires sexual maturity. They produce offspring in the form of spores for example.
Answer:
It is called the Matrix (Mitochondrial matrix)
