Answer:
4
If the beaker was not cleaned, starch could have been in it.
 
        
                    
             
        
        
        
Answer:
The gravitational pull of the moon pulls the seas towards it, causing the ocean tides. Gravity creates stars and planets by pulling together the material from which they are made. Gravity not only pulls on mass but also on light.
Explanation:
 
        
             
        
        
        
Answer:
how can I help u with.
I can't see any pictures
u post a question picture.
I can answer u
 
        
             
        
        
        
Answer:
A) 6
Explanation:
Complex III of the electron transport chain transfers four protons across the membrane during aerobic respiration, per pair of electrons. In the other hand, complex IV is responsible for transporting two protons (per pair of electrons) across the membrane. 
If the given compound injects a pair of electron into complex III,  four protons will accumulated due to complex III activity and then two more protons as these electrons move forward to complex IV. This means a total of 6 protons being transported to intermembrane space.