Answer:
Explanation:
The total solution formed after mixing the components will be 
20 μl + 20 μl + 40 μl + 120 μl = 200 μl
The smallest size tube that will hold the entire reaction is:
Firstly convert 200μl to ml 
1000 μl = 1 ml
200 μl = X 
X = 200 x 1/1000
X = 0.2 ml
The smallest size tube (from the options provided in the question) is 0.25 ml. 
The pipetting device that could be used to accurately measure all the needed volumes must be able to measure 20 μl, 40 μl and 120 μl. 
The best pipette to accurately take these measurements individually is the P200 micropipette because it has an accurate/useful range of between 20 μl - 200 μl
 
        
             
        
        
        
Proteins are made of hundreds and thousands of polymers called Amino Acid which are attached with each other in long chains. There are 20 different types of amino acids that make up a protein
        
             
        
        
        
Plasma Membrane is the answer
        
             
        
        
        
It is called jagged gaphene i think
        
             
        
        
        
The machine found no kidney stones and the patient is healthy