The term 'operon' in genetics refers to: MCQ with Answer and Explanation

Explanation:
The renal corpuscle consists of the glomerulus (capillary tuft) and Bowman's capsule. This is where ultrafiltration of blood occurs. The filtrate then passes through the proximal tubule, loop of Henle, distal tubule, and collecting duct. The loop of Henle concentrates urine, the tubules reabsorb and secrete. The nephron is the complete functional unit.

Explanation:
Acetobacter aceti and related species oxidize ethanol to acetic acid (vinegar) in the presence of oxygen. This is an aerobic fermentation process. Lactobacillus produces lactic acid, Pseudomonas can spoil food, Bacillus includes various industrial strains. Vinegar is used as a condiment and preservative.

Explanation:
Insulin stimulates GLUT4 transporters to move to the cell membrane, increasing glucose uptake in muscle and adipose tissue. Glucagon raises blood glucose.