Excretion

Question 1

Ectotherms

Answer 1

Ectotherms gain or lose heat from or to their external environment

Question 2

Endotherms

Answer 2

Endotherms generate their own heat from metabolic reactions

Question 3

Filtration

Answer 3

Filtration means that water and small molecules pass (under high pressure) from the blood into the nephron

Question 4

Reabsorption

Answer 4

Reabsorption means that molecules pass from the nephron back into the blood

Question 5

Active transport

Answer 5

Active transport means that energy (in the form of ATP) is used to move molecules, often against a concentration gradient, i.e from low concentrations to high concentrations

Question 6

Secretion

Answer 6

Secretion means that some substances pass from the blood into the nephron