A model organisms is a species that has been widely studied, usually because it is easy to maintain and breed in a laboratory setting and has particular experimental advantages. model organisms are non-human species that are used in the laboratory to help scientists understand biological processes. 
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First part is explaining second part is explaining the uses)
        
             
        
        
        
Chlorophyll is the source of carbon in the sugar molecule 
        
                    
             
        
        
        
Answer:
Aquaporin protein is a type of protein composed of a bundle of six transmembrane α-helices.
Explanation:
Aquaporin protein is a type of protein composed of a bundle of six transmembrane α-helices. These aquaporin protein have different size of water channels that allow water through to pass through it but it does not allow glucose to move through it due to its large size. The direction of water movement is toward the cell because there is low water inside the cell as compared to outside environment so the water moves inside the cell and  rate of water movement slows down over time due to filling of empty spaces with water.
 
        
             
        
        
        
Answer: Deoxyribonucleicacid
Explanation:
Dna is a molecule in the shape of a double helix that acts as the genetic code for your body. It is made of nucleotides Adenine Guanine Thymine and Cytosine