PNB 2250 Exam 3 Uconn Questions
and Answers 100% Pass
The loss of digestive wastes, CO2 and NH4+ are examples of _______________. -
✔✔excretion
The regulation of H2O and solutes is via ___________________. - ✔✔osmoregulation
Water moves from an area of ________ (low, high) osmolarity to an area of __________
(low, high) osmolarity - ✔✔low, high
___________: a chemical dissolved in a solvent (H2O is the only solvent we are
interested in) [6.02]. ___________s occupy space within H2O - ✔✔solute
Osmolarity : measure of the number of ____________ per _________ of H2O, expressed
as osmoles/liter (OsM/L) or milliosmoles/liter (mOsM/L). - ✔✔solutes, liter
Hypertonic (hyperosmotic): a comparison of the osmolarity of two solutions, with one
solution have a ___________ number of solutes (and less H2O) than the other solution. -
✔✔greater
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, Hypotonic (hypoosmotic): again a comparison of the the osmolarity of two solutions,
with one solution have ___________ solutes (and more H2O) than the other solution. -
✔✔fewer
Isotonic (isoosmotic): two solutions with the _________ osmolarity and H2O content. -
✔✔same
Which solution has the highest osmolarity?
A) 1M/L sucrose
B) 1M/L NaCl
C) 0.1M/L CaCl2
D) 1M/L ZnCl2 - ✔✔D
The movement of water across the cell membrane can ___________ cells - ✔✔destroy
Because of the factors affecting diffusion, H2O will move from an area of higher
concentration (low osmolarity) to an area of lower concentration (higher osmolarity) if
the cell membrane is permeable to H2O [6.03]. The movement of H2O in this way is a
very powerful force, capable of rupturing membranes and causing damage to animals.
This force is known as ________________ ________________. - ✔✔osmotic pressure
Placement of cells into which solution will cause them to burst?
Katelyn Whitman, All Rights Reserved © 2025 2
and Answers 100% Pass
The loss of digestive wastes, CO2 and NH4+ are examples of _______________. -
✔✔excretion
The regulation of H2O and solutes is via ___________________. - ✔✔osmoregulation
Water moves from an area of ________ (low, high) osmolarity to an area of __________
(low, high) osmolarity - ✔✔low, high
___________: a chemical dissolved in a solvent (H2O is the only solvent we are
interested in) [6.02]. ___________s occupy space within H2O - ✔✔solute
Osmolarity : measure of the number of ____________ per _________ of H2O, expressed
as osmoles/liter (OsM/L) or milliosmoles/liter (mOsM/L). - ✔✔solutes, liter
Hypertonic (hyperosmotic): a comparison of the osmolarity of two solutions, with one
solution have a ___________ number of solutes (and less H2O) than the other solution. -
✔✔greater
Katelyn Whitman, All Rights Reserved © 2025 1
, Hypotonic (hypoosmotic): again a comparison of the the osmolarity of two solutions,
with one solution have ___________ solutes (and more H2O) than the other solution. -
✔✔fewer
Isotonic (isoosmotic): two solutions with the _________ osmolarity and H2O content. -
✔✔same
Which solution has the highest osmolarity?
A) 1M/L sucrose
B) 1M/L NaCl
C) 0.1M/L CaCl2
D) 1M/L ZnCl2 - ✔✔D
The movement of water across the cell membrane can ___________ cells - ✔✔destroy
Because of the factors affecting diffusion, H2O will move from an area of higher
concentration (low osmolarity) to an area of lower concentration (higher osmolarity) if
the cell membrane is permeable to H2O [6.03]. The movement of H2O in this way is a
very powerful force, capable of rupturing membranes and causing damage to animals.
This force is known as ________________ ________________. - ✔✔osmotic pressure
Placement of cells into which solution will cause them to burst?
Katelyn Whitman, All Rights Reserved © 2025 2
