Question

receptors binding peptide hormones
the receptors for non-steroid peptide hormones are on the
plasma membrane
nuclear envelope
deoxyribonucleic acid (dna) nuclear complex
peptide chain

Explanation:

Peptide hormones are water - soluble. Since they cannot pass through the lipid - rich plasma membrane (unlike steroid hormones which are lipid - soluble and can pass through the plasma membrane and bind to intracellular receptors), their receptors must be on the cell surface (plasma membrane). Binding to plasma - membrane receptors initiates a signaling cascade inside the cell.

Answer:

plasma membrane