Definitions

Question 1

Define ectotherms

Answer 1

Ectotherms gain or lose heat from or to their external environment

Question 2

Define endotherms

Answer 2

Endotherms generate their own heat from metabolic reactions

Question 3

Define filtration

Answer 3

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

Question 4

Define reabsorption

Answer 4

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

Question 5

Define 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

Define secretion

Answer 6

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