This happens naturally, so no proteins are needed.
        
             
        
        
        
The drug that to a receptor in the nucleus. This binding makes on a gene to make a protein. This drug is actually lipophilic and hydrophobic, the correct option is A.
What is receptor?
In biochemistry and pharmacology, receptors are protein-based chemical frameworks that transmit and receive signals that can be assimilated into biological systems.
As the drug is crossing the lipid membrane so it should be lipophilic and hydrophobic to be able to bind the receptor as in the given situation.
Thus, the correct option is A.
For more details regarding a receptor, visit:
brainly.com/question/11985070
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Barbara have both alleles that are dominant. It is because all the
letters for the genotype of the trait are capitalized. It might be that
both of her parents have at least one dominant allele each
        
             
        
        
        
Which Characteristic of life best describes the process of homostasis