Chapter 44.1

Question 1

Osmoregulation

Answer 1

Osmoregulation regulates solute concentrations and balances the gain and loss of water

Question 2

Excretion

Answer 2

Excretion gets rid of nitrogenous metabolites and other waste products

Question 3

Osmolarity

Answer 3

Osmolarity, the solute concentration of a solution, determines the movement of water across a selectively permeable membrane

Question 4

Osmoconformers

Answer 4

Osmoconformers, consisting only of some marine animals, are iso-osmotic with their surroundings and do not regulate their osmolarity

Question 5

Osmoregulators

Answer 5

Osmoregulators expend energy to control water uptake and loss in a hyperosmotic or hypoosmotic environment

Question 6

Anhydrobiosis

Answer 6

Some aquatic invertebrates in temporary ponds lose almost all their body water and survive in a dormant state
This adaptation is called anhydrobiosis

Question 7

Transport Epithelia

Answer 7

Transport epithelia are epithelial cells that are specialized for moving solutes in specific directions