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The passive movement of solutes from a place of high concentration to a place of low concentration is called _________.

Study the diagram below carefully.  It shows a cell membrane (tan) separating the extracellular fluid (A) from the intracellular fluid (B). The small circles represent polar solutes dissolved in water. Use the pull-down menus below to insert the best, technical terms into the following sentences to make them true: In the above diagram, water will move across the plasma membrane by the process of [blank1].  For the situation seen above, water will move [blank2] the cell.  The inside of the cell above would be considered [blank3], relative to the outside of the cell.  If the cell above is an erythrocyte, it will eventually [blank4] in this solution.

If a K+ channel opens in the plasma membrane, those ions will flow out of the cell by facilitated diffusion.

Think about the virtual microscope that you learned to use in Lab 1.  When using a microscope like that in the laboratory, as you increase the magnification of the image, the light intensity will _________.

When using a microscope, like the virtual example you used on Connect for Lab 1, setting the _________ too high or too low will specifically degrade the contrast of your image.

This is the formal name for the type of microscope that you learned about in a Virtual Labs simulations during Lab 1. Type the best answer in the text box below:

When using a standard laboratory microscope (like the virtual one you learned about in Lab 1), you should always start with the 4x objective lens in place over the specimen, because …

In Lab 2, you conducted a virtual lab simulation that used a dialysis bag that was placed into a beaker of fluid.  Remember that dialysis bags are like artificial cells, such that their membrane is selectively permeable to solutes and solvents. Imagine that you have a dialysis bag filled with a 2 M NaCl solution.  That dialysis bag is placed in a beaker filled with a 3 M glucose solution.  Assume that both of these solutions are aqueous and this dialysis bag material is impermeable to both solutes, but permeable to the solvent. In the space below, briefly describe what will happen to the volume of fluid inside the dialysis bag over the next 30 minutes and explain HOW this change will happen. PRO TIP: You may want to draw this situation out on your scratch paper so you can visualize what’s going on …

The produce manager at a farmer’s market was interested in determining how many oranges a person buys when they buy oranges.  He asked the cashiers over a weekend to count how many oranges a person bought when they bought oranges and record this number for analysis at a later time.  The data is given in the table below.  The random variable x represents the number of oranges purchased and P(x) represents the probability that a customer will buy x oranges.  Determine the mean number of oranges purchase by a customer.    

Assuming an unlimited supply of substrate, if a cell increases the concentration of a given protein, that will ________ the amount of work accomplished by that population of proteins.