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 …

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.

According to government data, the probability than an adult never had the flu is 11%. You randomly select 53 adults and ask if he or she ever had the flu. Can you use the normal distribution to approximate the binomial distribution?  If so, find the mean and standard deviation, If not, explain why.

Imagine that you are using a microscope exactly like the virtual one you used in the Lab 1 simulations.  When you look through the eye pieces, you see this sort of image: This image is showing two separate views of the same specimen that do not overlap, hence the duplication of all features, including the stars.  What should you adjust on the microscope to improve the quality of this image?

This field specifically uses microscopes to study the structure of different tissues, not individual cells.

Study this image below.  It shows a few mitochondria, several vesicles, and bunch of ribosomes inside an animal cell.    What specific kind of microscope most likely produced this image?  Type the best and most specific answer into the text box below:    

Find the area under the standard normal curve to the left of z = 1.5.

For the following questions, you will need a periodic table.  Use the one found at this link (don’t worry … Proctorio will be fine if you click this): https://www.fishersci.com/us/en/periodic-table.html   READ CAREFULLY: This question has FOUR parts (A, B, C, and D) and you will need ONE blank sheet of paper (use it wisely).  FOR PARTS A, B, AND C: Write your answers to these parts on your black piece of paper. When you answer each part, write the letter along the left side of the paper and show your solution just under and next to that letter.  SHOW ALL YOUR WORK AS INSTRUCTED IN LABS 1 AND 2. Also, draw a horizontal line across your piece of paper to show where your solution for each part begins and ends. For all atomic weights pulled from the periodic table, round to TWO decimal places.  For all calculations, also round your values and answers to TWO decimal places. Make sure to circle your final answer for each part. When you finish Parts A, B, and C, take a picture of your work with your smartphone and email that image to Dr. Machado at christopher_machado@cuesta.edu.  Make the subject line: [YOUR NAME] Lab 1 Calculations   FOR PART D, TYPE YOUR ANSWER IN THE TEXT BOX BELOW IN COMPLETE SENTENCES!   Part A (6 points) Calculate the number of grams in one mole of cysteine (C3H7NO2S).    Part B (8 points) Magnesium chloride (MgCl2) is a molecule held together by ionic bonds and completely dissociates in solution.  If you are given a MgCl2 solution that has a concentration of 0.5 g/dL, what would be the molarity of that solution?   Part C (8 points) Calculate the osmolarity (in mOsM) of the MgCl2 solution you worked with in the previous question.    Part D (8 points) If you added 5 mL of this solution to a test tube containing 1 mL of human blood and then observed the erythrocytes with a microscope, DESCRIBE what you expect to see in terms of erythrocyte appearance/structure and EXPLAIN HOW that change occurred by comparing this solution to the normal osmolarity of blood.  TYPE YOUR ANSWER IN THE TEXT BOX BELOW, USE COMPLETE SENTENCES AND INCLUDE AS MUCH TECHNICAL TERMINOLOGY AS POSSIBLE!

Approximately ______% of the human body is made up of water.

Study this image carefully.  It shows a microscopic image of various blood cells.      What specific kind of microscope most likely produced this image?  Type the best and most specific answer into the text box below: