Has anyone taken the genetics unit test in connexus? not looking for answers, just a little bit what to expect and some with studying.

Q: a: in sexually reproducing animals, once fertilization of the egg takes place, the exists as a single cell until cell division begins

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere,b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify,d)anaerobic bacteria kept thriving with more oxygen

Which process in respiration happens first? a)pyruvate processing b)electron transport chain c)krebs cycle d)glycolysis