Answer:
The correct answer is - mitochondria.
Explanation:
The reaction the generates the energy by the oxidation and reduction reaction that takes place in the cell is cellular respiration which converts biochemical reaction from the nutrients to ATP which is the currency of the energy in living beings.
The cellular respiration has three-stage glycolysis ( takes place in the cytoplasm), Oxidative decarboxylation and TCA cycle. Oxidative decarboxylation and TCA cycle take place in the mitochondria which involves oxidation of pyruvate and reduction of NAD+ in this process.
Thus, the correct answer is - Mitochondria.
 
        
             
        
        
        
Answer:
C.  Cells
Explanation:
Arteries and anterioles carry oxygen away from the heart. An easy way to remember this is: 
Arteries = Away
hope this helps :) 
 
        
                    
             
        
        
        
The biological species concept is the most widely accepted species concept. It defines species in terms of interbreeding. 
hope this helps. :)