# Plant Physiology

posted by .

Hey i have a mid term today at 3 , and this one sample question my prof posted online. If someone can please show me how to get the answers i would really appreciate it:

A plant cell is found to have a Ψs = - 0.7 MPa and a Ψp = 0.5 MPa.

Is this cell turgid? (yes or no) (1 mark)

Yes

b. What is the Ψw of this cell?

-0.2

c. If this cell were placed in a large beaker of solution (at atmospheric pressure and with a Ψs = - 0.3 MPa), would water enter or leave the cell? Assume that no solute can cross the plant plasma membrane in either direction and that the volume of neither body of water changes significantly.

d. Once the cell in c. has come to equilibrium with the beaker solution (again assuming that no solute crosses the plant plasma membrane in either direction and that the volume of neither body of water changes significantly), what will be the Ψp within the cell?

0.4
(-0.3 MPa = -0.7 MPa + 0.4 MPa)

--------------------------------------

The equation is :

Ψw = Ψs + ΨP

• Plant Physiology -

Sorry entire thing didn't get posted:

a.So the answer for is the cell turgid?
Yes

B. What is the Ψw of this cell?
-0.2

C. If this cell were placed in a large beaker of solution ( at atmospheric pressure and with a Ψs = - 0.3 MPa. would the water enter or leave the cell?
Assume that no solute can cross the plant plasma membrane in either direction and that the volume of neither body of water changes significantly.

Leaves

D.Once the cell in C. has come to equilibrium with the beaker solution( again assuming no solute can cross the plant plasma membrane in either direction and that the volume of neither body of water changes significantly.What will the Ψp be within the cell?

0.4

(-0.3 MPa = -0.7 MPa + 0.4 MPa)

• Plant Physiology -

## Similar Questions

1. ### Physics

I have 2 questions...one can someone please read my question posted around noon today called Lab for physics?
2. ### ENEGRY COSTS

I need to know how much it would cost to build the following plants (as in factories): Solar energy plant Biomass plant Geothermal energy plant Wind energy plant nuclear Energy plant
3. ### Algebra I

Hi, I would like someone to explain to me the process to get to the answer of these questions. (The answers are in the back of the book, but I don't understand how to get them myself): QUESTION ONE Warren has 40 coins (all nickels, …
4. ### physics

Water drops over 49 m high Niagara Falls at the rate of 6.0 106 kg/s. If all the energy of the falling water could be harnessed by a hydroelectric power plant, what would be the plant's power output hey can you please do this one step …
5. ### Chemistry

A sample of C3H8 has 2.64 x 10^24 atoms. How many carbon atoms does the sample contain?
6. ### Re: Plant biology

I'm doing a writing assignment on plant stress physiology. The stress that I chose to research was heat stress. One of the things that I have to do is describe at least 3 experiments that I plan to perform (hypothetically speaking, …
7. ### chemistry

Hey, I'm struggling a bit with this thermal energy question: One major cost in the brewing history is the cost of energy used in running a plant. Much of the heating plant is accomplished by the cooling and or condensing of steam. …
8. ### Statistics

We are managing a large soy bean farm. To estimate our revenues for the coming year, we need to estimate our crop yield. Soy bean yields are measured by pods/plant. We are planning for a yield of 40 pods/plant. a. We take a random …
9. ### Algebra

Lynn is tracking the progress of her plantâ€™s growth. Today the plant is 5cm high. The plant grows 1.5 cm each day. Find the height of the plant after 20 days.
10. ### Biology

In a mycorrhizal relationship, what benefit does the plant get from the fungus?

More Similar Questions