What are the functions of proteins in organisms?

Good morning. 
The only reason I answered this is because this question was looking lonely. Like, /desperate lonely/. Anywho, let's work. 

Proteins are biomolecules that have multiple jobs to do in an organism. Examples of their functions are below. 

1. They are used to transport molecules. 
2. They are used to place/store molecules. 
3. They are needed for movement of the cell. 

I'm having some difficulty seeing the diagram clearly.but the question says there's a net inward force on the object.so we know right away,  from newton's 2nd law of motion, thatthat baby is accelerating.  it doesn't even matter which way thenet force is pointing.  if there's any net force, then either theobject's speed or else its direction must be changing.