Your Full Name:UMUC Biology 102/103Lab 3: Cell Structure and FunctionINSTRUCTION

Your Full Name:UMUC Biology 102/103Lab 3: Cell Structure and FunctionINSTRUCTIONS:On your own and without assistance, complete this Lab 3 Answer Sheetelectronically and submit it via the Assignments Folder by the date listed in theCourse Schedule (under Syllabus).To conduct your laboratory exercises, use the Laboratory Manual locatedunder Course Content. Read the introduction and the directions for eachexercise/experiment carefully before completing the exercises/experiments andanswering the questions.Save your Lab 3 Answer Sheet in the following format: LastName_Lab3(e.g., Smith_Lab3).You should submit your document as a Word (.doc or .docx) or Rich TextFormat (.rtf) file for best compatibility.Pre-Lab Questions1. Identify three major similarities and differences between prokaryotic and eukaryoticcells.2. Where is the DNA housed in a prokaryotic cell? Where is it housed in a eukaryoticcell?3. Identify three structures which provide support and protection in a eukaryotic cell.©eScience Labs, LLC 2014Experiment 1: Cell Structure and FunctionLabel each of the arrows in the following slide image:Post-Lab Questions1. What is the difference between the rough and smooth endoplasmic reticulum?2. Would an animal cell be able to survive without mitochondria? Why or why not?©eScience Labs, LLC 20143. What could you determine about a specimen if you observed a slide image showingthe specimen with a cell wall, but no nucleus or mitochondria?4. Hypothesize why parts of a plant, such as the leaves, are green, but other parts,such as the roots, are not. Use scientific reasoning to support your hypothesis.Experiment 2: Osmosis – Direction and ConcentrationGradientsData Tables and Post-Lab AssessmentTable 3: Sucrose Concentration vs. Tubing PermeabilityTable 3: Sucrose Concentration vs. Tubing PermeabilityBandColor% Sucrosein Beaker%Sucrosein BagInitial Volume(mL)Final Volume(mL)Net Displacement(mL)YellowRedBlueGreenHypothesis:©eScience Labs, LLC 2014Post-Lab Questions1. For each of the tubing pieces, identify whether the solution inside was hypotonic,hypertonic, or isotonic in comparison to the beaker solution in which it was placed.2. Which tubing increased the most in volume? Explain why this happened.3. What do the results of this experiment this tell you about the relative tonicity betweenthe contents of the tubing and the solution in the beaker?©eScience Labs, LLC 20144. What would happen if the tubing with the yellow band was placed in a beaker ofdistilled water?5. How are excess salts that accumulate in cells transferred to the blood stream so theycan be removed from the body? Be sure to explain how this process works in termsof tonicity.6. If you wanted water to flow out of a tubing piece filled with a 50% solution, whatwould the minimum concentration of the beaker solution need to be? Explain youranswer using scientific evidence.7. How is this experiment similar to the way a cell membrane works in the body? How isit different? Be specific with your response.