Podcast
Questions and Answers
Why are the units for water potential in pressure?
Why are the units for water potential in pressure?
- Plant cells are under pressure and it is easier to measure pressure (correct)
- Plant cells are under pressure and it is difficult to measure temperature
- Plant cells are under temperature and it is difficult to measure pressure
- Plant cells are under temperature and it is easier to measure pressure
What is water potential (Ψw) a measure of?
What is water potential (Ψw) a measure of?
- The taste of water
- The temperature of water
- The energy state of water (correct)
- The color of water
What is the equation for water potential?
What is the equation for water potential?
- $Ψw = Ψp * Ψs * Ψg * Ψm$
- $Ψw = Ψp + Ψs + Ψg + Ψm$ (correct)
- $Ψw = Ψp - Ψs - Ψg - Ψm$
- $Ψw = Ψp / Ψs / Ψg / Ψm$
What does the solute potential (Ψs) represent?
What does the solute potential (Ψs) represent?
Why is the solute potential (Ψs) of any solution at atmospheric pressure always negative?
Why is the solute potential (Ψs) of any solution at atmospheric pressure always negative?
Water potential (Ψw) is the sum of the contributions of the various factors that influence water potential: Ψw = Ψp + Ψs + Ψg + Ψm
Water potential (Ψw) is the sum of the contributions of the various factors that influence water potential: Ψw = Ψp + Ψs + Ψg + Ψm
Solutes always decrease the free energy of water, thus their contribution is always ______.
Solutes always decrease the free energy of water, thus their contribution is always ______.
The solute potential of a solution can be ______ with the van’t Hoff equation: Ψs = - miRT where m = molality (moles/1000 g); i = ionization constant (often 1.0); R R= gas constant (0.0083 liter x MPa/mol deg); and T = temperature (K).
The solute potential of a solution can be ______ with the van’t Hoff equation: Ψs = - miRT where m = molality (moles/1000 g); i = ionization constant (often 1.0); R R= gas constant (0.0083 liter x MPa/mol deg); and T = temperature (K).
Solute potential is also called the ______ because solutes affect the direction of osmosis.
Solute potential is also called the ______ because solutes affect the direction of osmosis.
Ψs of any solution at atmospheric pressure is always ______ – why.
Ψs of any solution at atmospheric pressure is always ______ – why.
What are the units for measuring pressure in water potential?
What are the units for measuring pressure in water potential?
What is the equation for solute potential (Ψs)?
What is the equation for solute potential (Ψs)?
Why is the solute potential (Ψs) of any solution at atmospheric pressure always negative?
Why is the solute potential (Ψs) of any solution at atmospheric pressure always negative?
What does the solute potential (Ψs) represent?
What does the solute potential (Ψs) represent?
What is water potential (Ψw) a measure of?
What is water potential (Ψw) a measure of?
What is the equation for water potential?
What is the equation for water potential?
What is the equation for solute potential (Ψs)?
What is the equation for solute potential (Ψs)?
What are the units for measuring pressure in water potential?
What are the units for measuring pressure in water potential?
Why is the solute potential (Ψs) of any solution at atmospheric pressure always negative?
Why is the solute potential (Ψs) of any solution at atmospheric pressure always negative?
What is water potential (Ψw) a measure of?
What is water potential (Ψw) a measure of?
Flashcards
What is water potential (Ψw)?
What is water potential (Ψw)?
It measures the energy status of water in a system.
Water potential equation?
Water potential equation?
Ψw = Ψp + Ψs + Ψg + Ψm, showing all factors.
What is solute potential (Ψs)?
What is solute potential (Ψs)?
The component that reduces water potential due to solutes.
Why is Ψs always negative?
Why is Ψs always negative?
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Why pressure units for water potential?
Why pressure units for water potential?
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Solute potential (Ψs) equation?
Solute potential (Ψs) equation?
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What is osmotic potential?
What is osmotic potential?
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Units for water potential?
Units for water potential?
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