A scientist compares the cholesterol content of the plasma membranes in the cells of an animal from Idaho with the cells of one from the Death Valley. Which will have the higher amount of cholesterol in their membrane?

A plant hasn’t been watered lately, so it has begun to wilt. We can see the effect this has on the cells. If this continues what will happen to the cell? How will this affect the plant’s turgor pressure? Will it increase, decrease, or stay the same?

Why is the sodium-potassium pump considered active transport? Explain your answer with what you know about how this pump works. Make sure to use your own words.

In your own words, discuss why the following affect the rate of diffusion: molecular size, temperature, and the distance traveled.

Explain in your own words the Fluid Mosaic Model and how it applies to plasma membranes.

Identify which type of transport is happening in each diagram in the picture below. The types of transport that you can use are facilitated diffusion, diffusion, equilibrium, osmosis, or active transport. Type in your answers in order from A to D. A: [A] B: [B] C: [C] D: [D]

7(b) [10 points] Find the area of the region enclosed by one loop of the polar curve givenby the polar equation

4. Consider the point with Cartesian coordinates . Which of the following options represents this point in polar coordinates?

6(c) [10 points] Find the Taylor series for the function

7(a) [10 points] A curve is defined by the following parametric equations. Find an equation of the tangent line to to the curve at the point where .