Question

1. what are the blood - filtering structures of the kidney called?

a. capillaries
b. nephrons
c. renal arteries
d. tubules

1. the stage in food processing involved in the modification and incorporation of absorbed molecules into the body of organisms is called

a. absorption
b. assimilation
c. ingestion
d. nutrition

1. the tubes where the urine leaves the kidney are called

a. collecting tubules
b. renal veins
c. ureters
d. urethra

1. all are macronutrients in plants except

a. phosphorus
b. potassium
c. nitrogen
d. zinc

Explanation:

• For question 7: Nephrons are the functional units of the kidney that filter blood. Capillaries are part of the nephron but not the overall blood - filtering structure. Renal arteries bring blood to the kidney, not filter it. Tubules are part of the nephron's structure for further processing after filtration.
• For question 8: Assimilation is the process of modifying and incorporating absorbed molecules into the body of organisms. Absorption is the uptake of nutrients, ingestion is the intake of food, and nutrition is the overall process of obtaining and using nutrients.
• For question 9: Ureters are the tubes that carry urine from the kidneys to the bladder. Collecting tubules are within the kidney, renal veins carry blood away from the kidney, and the urethra is the tube through which urine leaves the body from the bladder.
• For question 10: Phosphorus, potassium, and nitrogen are macronutrients in plants. Zinc is a micronutrient, required in smaller amounts.

Answer:

1. b. nephrons
2. b. assimilation
3. c. ureters
4. d. zinc