The theory of endosymbiosis suggests that a<span> primitive aerobic prokaryote was engulfed by a larger anaerobic prokaryote. C
HOPE THIS HELPS! ^_^</span>
It might be 23% because 77% of water covers earth and most of the water is either polluted or salt water.
Answer:
A disease model is an animal or cells displaying of the pathological process that are observed in the actual human or animal disease.
Enzymes actually catalyses the chemical reaction so as function as catalyst.
It is used to speed up the chemical reaction.
C.<span>Without enzymes, chemical reactions would not occur quickly enough to sustain life ,is the correct answer.</span>