What is the basic functional unit of the kidney?

What is the basic functional unit of the kidney? A. Cortex B. Neuron C. Nephron D. Ureter 2. What are the three types of nitrogenous waste? A. Salt, uric acid, urea B. Urea, uric acid, ammonia C. Urea, excess water, ammonia D. Solutes, uric acid, ammonia 3. What excretory organs do insects have? A. Kidneys B. Malphigian tubules C. Nephridia D. Photonephridia 4. What is the cup-shaped structure at the beginning of each nephron? A. Bowman’s capsule B. Distal tubule C. Loop of Henle D. Peritubular capillaries 5. What tube carries the urine to the bladder? A. Loop of Henle B. Convoluted tubule C. Ureter D. Urethra