Q: What is named after the type of enzyme they interact with in the cell?


Read this paragraph and choose the correct option from the provided answers:

In eukaryotic cells, most of the intracellular proteins that are activated by a ligand binding to a receptor protein are enzymes. Receptor proteins are named after the type of enzyme that they interact with inside the cell. These enzymes include G proteins and protein kinases, likewise there are G-protein-linked receptors and tyrosine kinase receptors. A kinase is a protein involved in phosphorylation. Tyrosine kinase receptors bind many polypeptide growth factors, cytokines, and hormones. Once the ligand is bound, these receptors specifically phosphorylate tyrosine amino acids, activating the signal transduction process inside the cell.

 Choices:

- oxygen proteins

- function proteins

- nitrogen proteins

- receptor proteins


A:
receptor proteins