Select the accurately matched pair of cell types and their corresponding secretions from the following options:
Chief cells, a secretion with a pH range of 2.0 to 3.0
Beta cells of islets of Langerhans, a secretion that decreases blood sugar level
Parietal cells, a digestive enzyme that hydrolyzes nucleic acids
Sebaceous gland, a secretion that evaporates for cooling
Chief cells are known for producing and secreting pepsinogen, an inactive enzyme that is activated by the acidic environment of the stomach to form pepsin. Pepsin plays a crucial role in the digestion of proteins. The secretions of chief cells have a pH range between 2.0 and 3.0, reflecting the acidic nature of the gastric environment necessary for optimal pepsin activity. Hence, the correct answer is option 1.