Which of the following pathogens is classified as bacterial?

A. Disaccharides: Broken down by brush-border enzymes (sucrase, lactase, maltase) in the small intestine, not in the stomach.
B. Lipids: Major digestion of dietary fats occurs in the small intestine via pancreatic lipase (with minor contribution from gastric lipase), so the stomach is not the main site.
C. Minerals: Inorganic nutrients that are absorbed, not enzymatically digested.
D. Proteins: Protein digestion begins in the stomach where pepsin (activated from pepsinogen in an acidic environment) breaks peptide bonds into smaller polypeptides.

A. Glucagon: Raises blood glucose by stimulating glycogenolysis and gluconeogenesis in the liver, so it does not decrease glucose.
B. Cortisol: Increases blood glucose through gluconeogenesis and reducing peripheral glucose uptake during stress.
C. Insulin: Lowers blood glucose by promoting cellular uptake of glucose and stimulating glycogen synthesis and storage.
D. Aldosterone: Regulates sodium and potassium balance in the kidneys and indirectly influences fluid volume, not directly responsible for lowering blood glucose.