Answer:
Todas las células están rodeadas por una membrana celular, que es selectivamente permeable. Las moléculas pueden entrar o salir de las células por difusión y transporte activo. Las células pueden ganar o perder agua por ósmosis.
Explanation:
Yo creo que es esto
 
        
             
        
        
        
Answer:
Return on Investment = 17%
Explanation:
Return on Investment = Net income from investment / Investment opportunity * 100
Where Net income from investment = (Sales * Contribution margin ratio) - Fixed expenses
Net income = ($1,530,000 * 30%) - $306,000
Net income = $459,000 - $306,000
Net income = $153,000
Return on Investment = $153,000 / $900,000 * 100
Return on Investment = 17%
 
        
             
        
        
        
Answer:
Tires bought by a driver for her personal use- final good
Memory card bought by a photographer-intermediate good
Lenses bought by a camera manufacturer- intermediate good
Tires bought by a car manufacturer-intermediate good
Explanation:
Since tires are for personal use and not used to produce any other good it will be classified as a final good.  
A memory card bought by a photographer will be used in creating new pictures, so it will be categorized as an intermediate good.
Similarly, lenses bought by a camera manufacturer will be used for making cameras and tires bought by a car manufacturer will be used for making cars. So both will be classified as a final good.
 
        
             
        
        
        
Shareholder or stockholder
        
             
        
        
        
Answer:
The answer is Fixed costs.
Explanation:
Fixed costs are costs that does not depend on the firms' level of output.