When handling body fluids, there are seven Universal Precautions that everyone should follow to keep themself safe and free from infection with bloodborne pathogens.  In the space below, describe ALL SEVEN of these universal precautions using complete sentences.

Proteins in this functional category move polar solutes or ions across the plasma membrane. Type the best answer into the text box below:

Learning more about enzyme function and modulation was a huge part of Lab 3, so hopefully you absorbed that information.  In the essay space below, briefly describe FOUR distinct “fun facts” or characteristics (1-2 sentences each) that apply to ALL enzymes that you learned in Lab 3 or in our Unit 1 & 2 lectures. As always, write in clear, complete sentences if you expect to earn full points.

Which of the following body fluids DOES NOT require extra safety and handling precautions in the laboratory?

Consider the previous problem and the same figure copied below. (All link costs in the network have strictly positive values.) Suppose the value of the link cost from Node 1 to Node 3 changes. What kind of change in the value (e.g., greater than x or less than y) would cause Node 1 to have to generate a new minimum-cost path to Node “8” in the next run of the distance vector algorithm? Answer format a) What is the change in the value of the link from node 1 to node 3 would cause a new route calculation at Node 1? The value should be greater than [Greaterthanvalue] The value should be less than [Lessthanvalue] b) How will this impact the minimum cost calculation?  Enter impact in one or two sentences: [Impact]    

In an aqueous 10% dextrose solution, _________ is the solvent.  Type the best answer below in the text box:

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 3 M glucose solution.  That dialysis bag is placed in a beaker filled with a 2 M NaCl 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 …

If a Ca2+ channel opens in the plasma membrane, those ions will flow out of the cell by facilitated diffusion.

If this is the sequence of DNA, what RNA would be made from it?  Be sure to label the 5′ and 3′ ends. 3′ AATCGGTAGCA 5′

Lab simulations on Connect only use a mouse to engage with the virtual lab environment; there are no keyboard shortcuts for any actions in the virtual laboratory.