When examining an endocrine cell from a new species of mammal under the microscope you find that it contains an abundance of rough endoplasmic reticulum, a large Golgi apparatus, and secretory granules. Which of the following is most likely to be true about these cells? 1. It secretes a peptide/protein hormone. 2. It secretes its product by diffusion through the lipid bilayer of the plasma membrane.3. It secretes by endocytosis.4. Its hormone product is synthesized from cholesterol. 5.It secretes a hormone with a hydrophobic structure.

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