The correct answer is: oxaloacetate
Anaplerotic reactions are chemical reactions that form intermediates that can be used in the further steps of metabolic pathways. These reactions are very important, because it is crucial for the cell to regulate concentrations of TCA cycle metabolites and intermediates.
The reaction in which pyruvate is converted to oxaloacetate is catalyzed by pyruvate carboxylase and it occurs in mitochondria. Also, pyruvate can be converted to L-malate, in a similar way.
It is the 4th level of organization, which is organ
Answer: oxygen and glucose
The hours of daylight and dark time depends on where you are but how many snails and plants it takes to keep a stable environment my guess would be a few thousand snails and a couple thousand plants and also they have to be different kind of plants of so they can benefit from each other all around.
Tight junction, Gap junction, Desmosomes
