<span>(1) “cells →” between organelles and tissues</span>
        
                    
             
        
        
        
Function of an enzyme is to lower reaction's activation energy and to increase speed of a reaction, but to make it happen, enzyme and substrate must fit spatially. The shape of an enzyme is essential to make enzyme-substrate complex - if active site of an enzyme doesn't fit to substrate, there won't be a enzyme-catalised reaction.
        
             
        
        
        
Answer:
The water molecules move by active transport into the cell from low water concentration to high water concentration
 
        
                    
             
        
        
        
Muscles and internal organs
        
                    
             
        
        
        
Answer:
The ecosystem would collapse if producers were removed.
Explanation:
The primary consumers populating would decrease due to lack of food and if a species doesn’t have food they most likely won’t reproduce. The secondary consumers won’t have enough food either because their prey being the primary consumers would die off. All this leads to the down fall of ecosystem.