Answer:
I did 4 crossovers and followed the genotype. That's how I did it.
Explanation:
 
        
             
        
        
        
Answer:
a. allow a variety of molecules to cross the cytoplasmic membrane 
Explanation:
The cells have different molecules in its membrane. As a membrane the main function of it is to regulate the income and outcome of substances that the cell needs or the cell has like some wastes. 
Some of these molecules can be some proteins like the permeases, that is going to  regulate the solutes that can enter the cell, but since they are non specific, that means that can not make the difference among one carbohydrate and another (as an example).
 
        
             
        
        
        
D)all of the above 
<span>Homeostasis is the property of a system, either open or closed, that regulates its internal environment and tends to maintain a stable, constant condition within an organism. (Eg controlling amount of sugar in the bloodstream, keeping waste levels at acceptable levels.) </span>
<span>Opening and closing stomata controls the gas levels within the plant. </span>
<span>Converting excess sugar molecules to a lesser number of starch molecules regulates sugar levels. </span>
<span>Excreting waste through the cell membrane prevents waste build-up.</span>
        
                    
             
        
        
        
C) I and III only just got this question on usa test prep and therefore i'm right