Answer: i would say D but i'm not entirely positive
Explanation:
this is showing how the energy is distributed between the types of organisms in an environment 
 
        
             
        
        
        
Yah it’s a Go phase because of the cell cycle.
        
             
        
        
        
The Centrosome is the organelle responsible for organizing the cell into two parts in preparation for cell division. It develops the spindle fibers used in cell division. 
The solution is B.
        
                    
             
        
        
        
Answer: (A) a membrane‑bound organelle with stacks of thylakoid discs called grana. 
(E) the main site of photosynthesis in a plant cell. 
Explanation:
The plant chloroplast is a large organelle, it is bounded by a double membrane like structure that is chloroplast envelop.
The chloroplast consists of chlorophyll pigment which traps the light energy from sun and converts it into chemical energy in the form of ATP. Thus the chloroplast is the main site for photosynthesis. Including the inner and outer membrane structure it also posses the third internal membrane structure which is called as the thylakoid membrane. The thylakoid membrane forms the network of flat discs which are called as thylakoids, the thylakoids are arranged in stacks which are called as grana. 
The thylakoid membrane is the center point for the synthesis of ATP through a chemiosmotic process.   
 
        
             
        
        
        
Cellular respiration is the term given to the metabolic reactions responsible for the conversion of biochemical energy in nutrients to adenosine triphosphate (ATP) with the generation of waste productions. ATP is required to provide the chemical energy to reactions in the cell that maintain homeostasis.