These are AP Biology Questions

1. If a cell’s ΨP = 3 bars and its ΨS = -4.5 bars, what is the resulting Ψ?
2. The cell from question #1 is placed in a beaker of sugar water with ΨS = -4.0 bars. In which direction will the net flow of water be?
3. The original cell from question # 1 is placed in a beaker of sugar water with ΨS = -0.15 MPa (megapascals). We know that 1 MPa = 10 bars. In which direction will the net flow of water be?
4. The value for Ψ in root tissue was found to be -3.3 bars. If you take the root tissue and place it in a 0.1 M solution of sucrose at 20°C in an open beaker, what is the Ψ of the solution, and in which direction would the net flow of water be?
5. NaCl dissociates into 2 particles in water: Na+ and Cl-. If the solution in question 4 contained 0.1M NaCl instead of 0.1M sucrose, what is the Ψ of the solution, and in which direction would the net flow of water be?
6. A plant cell with a Ψs of -7.5 bars keeps a constant volume when immersed in an open-beaker solution that has a Ψs of -4 bars. What is the cell’s ΨP?
7. At 20°C, a cell containing 0.6M glucose is in equilibrium with its surrounding solution containing 0.5M glucose in an open container. What is the cell’s ΨP?
8. At 20°C, a cell with ΨP of 3 bars is in equilibrium with the surrounding 0.4M solution of sucrose in an open beaker. What is the molar concentration of sucrose in the cell?
9. You are stranded on a lifeboat with several other people in the middle of the ocean. You have run out of clean drinking water and are very thirsty. The others have started to drink the seawater to quench their thirst. Since you’re waiting for rescue (and are a top notch AP Biology student), you decide to solve a couple of water potential problems to determine if drinking sea water is a good idea or not. ☺
a. The majority of dissolved ions in seawater is NaCl, roughly a 0.5M concentration. The ionization constant of NaCl is 2.0. Calculate the solute potential for seawater if you know that the water is 2°C.
b. Your own cells have a 0.15M concentration. Calculate the solute potential for your own cells, knowing that body temperature is 37°C.
c. Using your knowledge about water potential, if you drink the seawater, wat will happen when the seawater comes into contact with your body’s cells? Note: ΨP for animal cells is zero.
d. Is drinking seawater a good idea for survival? What effect will drinking seawater have on you and your chances of surviving until you are rescued?

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Identify two reasons why geographers today believe Mathus' theory can be used to predict future population issues?

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What activity do scrubbers perform that can be useful for humans to understand and utilize?
A)
Scrubbers remove carbon dioxide from the atmosphere.
B)
Scrubbers help clean up ocean water polluted by oil spills.
C)
Scrubbers can be used as an alternative energy source.
D)
none of the above

Which of the following would NOT be an example of an insulator?
a Rubber gloves

b Plastic tubing

c Salt water(correct)

d Normal air

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The narrator of the passage can best be described as

What do paragraph 30-36 reveal about spunk ?

for the following system determine the values of p q and r that satisfy all three eqyations

When deciding if you should buy something, what can you ask yourself to determine if the item is a need or want? 2. Why do you think people spend so much money on their wants despite the financial costs?

Philosophy: introduction to logic

Claim: Treat others only as you consent to being treated in the same situation.

INTERPRETATION

a) What is the form of the claim?

b)Does anything need to be clarified?

c) What kind of claim is this claim?

d) If you can, identify some necessary conditions of the claim that are false or debatable.

EVALUATION

e) Use your understanding of its nature to construct ss many realistic counterexamples as possible.

f) Estimate the combined probability of those counterexamples. Justify your estimation.

g) Use that estimation to calculate the inverse probability of the claim.


WHAT IS THE BEST OPPOSING VIEW TO YOUR EVALUATION of the claim?

h) How could a reasonable author of the claim respond to your criticism ? use your counter examples to charitably reconstruct the claim in a way that blocks all your counterexamples. ​

Does Hatchet have instructional value as a survival guide?

What happened to the United States Employment (as indicated by various measures of unemployment) during the years 2017,2018,2019,2020

Which of the balls below has the most inertia when it is not in motion?
A.
Ball X
B.
Ball Z
C.
They will have the same inertia.
D.
Ball Y

one possible major in college is__.

how does culture affects education​