20 Questions
Which of the following best describes osmolarity?
The solute concentration of a solution
If two solutions are isoosmotic, what can be said about the movement of water?
The movement of water is equal in both directions
What is the direction of net flow of water if two solutions differ in osmolarity?
From hypoosmotic to hyperosmotic solution
Which term describes a solution with a lower solute concentration?
Hypoosmotic
What is the term for a solution with a higher solute concentration?
Hyperosmotic
What determines the movement of water across a selectively permeable membrane?
Osmolarity
If two solutions have the same osmolarity, what can be said about their movement of water?
The movement of water is equal in both directions
What is the term for the solute concentration of a solution?
Osmolarity
Which of the following is true when two solutions differ in osmolarity?
The net flow of water is from hypoosmotic to hyperosmotic solution
What can be said about the movement of water in isoosmotic solutions?
The movement of water is equal in both directions
Which of the following statements about osmoconformers is true?
Osmoconformers are isoosmotic with their surroundings and do not regulate their osmolarity.
Which of the following statements about osmoregulators is true?
Osmoregulators regulate their osmolarity in a hyperosmotic or hypoosmotic environment.
How do marine fish balance water loss and excrete salt?
Marine fish drink large amounts of seawater to balance water loss and excrete salt through their gills and kidneys.
How do freshwater fish replenish salts?
Freshwater fish drink almost no water and replenish salts through eating.
What mechanisms do land animals have to prevent dehydration?
Land animals have mechanisms to prevent dehydration.
What are the most significant nitrogenous wastes?
The most significant nitrogenous wastes are proteins and nucleic acids.
What do most terrestrial animals and many marine species excrete as a conversion product of ammonia?
Most terrestrial animals and many marine species excrete urea.
What do insects, land snails, and many reptiles including birds excrete as a semisolid paste?
Insects, land snails, and many reptiles including birds excrete uric acid.
What are the forms of nitrogenous waste?
The forms of nitrogenous waste are ammonia, urea, and uric acid.
What are the nitrogenous breakdown products of proteins and nucleic acids?
The nitrogenous breakdown products of proteins and nucleic acids are ammonia and proteins.
Test your knowledge on osmosis and osmolarity with this quiz! Learn about the solute concentration of solutions and how it determines the movement of water across selectively permeable membranes. Explore concepts such as isoosmotic solutions and the equal movement of water in both directions.
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