Answer:
that's cool you can do that
Explanation:
 
        
             
        
        
        
Bobs is the answer I found it on ege
        
             
        
        
        
Answer:
Adenine binds to guanine.
Explanation:
Rules of the base pairing are:  
A with T
Purine base, adenine (A) pairs with the pyrimidine base, thymine (T).
C with G
Pyrimidine base, cytosine (C) pairs with purine base, guanine (G).
<u>(Option A is correct).
</u>
<u>(Option B is incorrect).
</u>
Nitrogenous bases are positioned in the inside helix structure like the rungs of a staircase due to hydrophobic effect and are stabilized by hydrogen bonding.  
<u>(Option C and D is correct).
</u>
 
        
             
        
        
        
Drugs undergo four stages within the body: absorption, distribution, metabolism, and excretion.<span> Drugs can be absorbed through the skin.
</span><span>Or, some drugs can be inhaled as gases. Gases penetrate the lining of the esophagus and lungs very quickly, which allows the drug to enter the bloodstream. </span><span>
 </span>Once a drug has entered the bloodstream,the blood throughout the body carries the substance with it. 
The digestive system is involved in the process of metabolism of the drugs. and transform drugs into substances that can be expelled by the body. Enzymes within the liver break down the drugs.