The biological basis for assigning all human beings into a singe species is that there so many, even tons of living organisms living on earth. These organisms differ in their external and internal organs and so to differentiate them from them, they are being classified into kingdoms then classes then phylums then family.
Answer: enters, receptor protein, neucleus, chromatin DNA protein complex, triggers mRNA production, specific protein
Explanation:
Cell wall is the protective layer that cover leaves
