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(Cell Structure and Function: Cell Types and Transport)

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Week 3 Cell Structure and Function Cell Types and Transport.doc Download Attachment;Experiment;CELL STRUCTURE AND FUNCTION: CELL TYPES AND;TRANSPORT;Cell Structure and Function: Cell;Types and;Transpo;rt;Margaret Vorndam, M.S. Version 42-003700-01;LAB REPORT ASSISTANT;This document is not meant to be a substitute for a formal laboratory report. The Lab;Report Assistant is simply a summary of the experiments questions, diagrams if;needed, and data tables that should be addressed in a formal lab report. The intent is to;facilitate students writing of lab reports by providing this information in an editable file;which can be sent to an instructor.;OBSERVATIONS;Data Table 1: Cell;Eukaryotic Cell Structure;Structures;Prokaryote Cell Structure;Organism name;Organism name;m;118;Hands-On Labs;Experiment;Flagella;CELL STRUCTURE AND FUNCTION: CELL TYPES AND;TRANSPORT;Cell wall;Pseudopodia;Cell membrane;Capsule or slime layer;Nucleus;Cytoplasm;Nucleoid Plasma membrane;Contractile vacuole;Cytoplasm Ribosome Thylakoid;vacuole Endospore;Food;Endospore;www.L abPaq.co;118;Hands-On Labs;Experiment;CELL STRUCTURE AND FUNCTION: CELL TYPES AND;TRANSPORT;Data Table 2: Diffusion Rate Comparison;Medium;Beginning;Time, To;Length of Time;in hours;End Time, T;1;= T1 To;Movement;of color;in mm;Semisolid;(Gelatin);Liquid (Water);m;120;Hands-On Labs;Rate of;Diffusion;In mm/;hour;Experiment;CELL STRUCTURE AND FUNCTION: CELL TYPES AND;TRANSPORT;Data Table 3: Diffusion through a Differentially Permeable;Membrane of Exercise;At Beginning.. At End of Exercise..;What are its;Contents?;What it;its;initial;What;is its;final;Dialysis;Tubing;Benedicts;Test Color;NA;Beaker Water;m;121;Hands-On Labs;What are its;final;contents?;Experiment;CELL STRUCTURE AND FUNCTION: CELL TYPES AND;TRANSPORT;Exercise 1: Prokaryotes and Eukaryotes Differences in Cell Structure and Function;RESULTS;1. What differences are observed between the two cells that were drawn?;2. List the specific cell part that each cell type possesses to;Prokaryote;Escape from hazardous;conditions?;Regulate water content?;Store food?;Reproduce?;m;122;Hands-On Labs;Eukaryot;e;Experiment;CELL STRUCTURE AND FUNCTION: CELL TYPES AND;TRANSPORT;QUESTIONS;A. With which cell type, prokaryote or eukaryote, are you most;familiar?;B.;Which cell type would be most successful in extreme;environments? Why?;C. Because the Prokaryote bacteria are generally 3 m or less in length they may not;exhibit specific structures under a compound light microscope. What type of microscope;would be a better choice for viewing bacteria?;D. Research amoebas online and give a few examples including where they are found;and what energy source they use.;E. Discuss whether cyanobacteria and amoebas are beneficial or detrimental to;humans and to the environment in general.;Exercise 2;Animal Cell;Structure;Function;Eukaryotes;Plant;and;RESULTS;1. What differences are observed between the two cells that were;drawn?;m;123;Hands-On Labs;and;Experiment;CELL STRUCTURE AND FUNCTION: CELL TYPES AND;TRANSPORT;2. List the cell part that each cell type possesses to;Plant;Animal;Regulate;water;content?;Produce energy to;power cell;function?;Store food?;Reproduce?;QUESTIONS;A. With which cell type, plant or animal, are you most familiar?;B. Which cell type would be most successful in extreme environments? Why?;m;124;Hands-On Labs;Experiment;CELL STRUCTURE AND FUNCTION: CELL TYPES AND;TRANSPORT;C. Outline the general differences between plant and animal cells in Table 1. Then;outline the similarities.;Table 1: Comparison of Structure and Function: Animal and Plant Cells;Animal;Cells;Differences;Plant;Cells;Similarities;m;125;Hands-On Labs;Experiment;CELL STRUCTURE AND FUNCTION: CELL TYPES AND;TRANSPORT;Exercise;3;Transport;of;Materials;through Cell;Membranes An Example of Passive;Transport;QUESTIONS;A. Which medium exhibited the fastest rate of;diffusion?;B. What might be reasons to explain the differences in the rate of;diffusion?;C. Graph the two sets of results from Table 2 on the same graph using a computer;spreadsheet program and include this graph in your report. Why is simultaneous;graphing of the results useful here? What type of graph would best demonstrate rates of;diffusion in gelatin versus liquid? Hint: The graph should show a continuity from To to T1;for both mediums.;DISCUSSION;A. Were your two hypotheses supported or;refuted?;m;126;Hands-On Labs;Experiment;CELL STRUCTURE AND FUNCTION: CELL TYPES AND;TRANSPORT;B. How might the rate of diffusion be increased? Decreased?;C. How might this be tested?;D. Why is this exercise be an example of passive transport?;E. Why must the spread of the coloring in the gelatin be monitored? For example, why;cant it just be left for 10 hours before the measurement is taken?;m;127;Hands-On Labs;Experiment;CELL STRUCTURE AND FUNCTION: CELL TYPES AND;TRANSPORT;F. What would be a graphic method to detect when the rate of diffusion in the gelatin;was at maximum and was beginning to slow?;G. Construct a table that compares your results to the average of your classmates;results, if available. Indicate how many classmates results are represented in the;average (N=?). Include it in your report. Are results similar? If not, what might explain the;differences in outcomes?;Exercise;4;Transport;of;Materials;through Cell;Membranes An Example of Active;Transport;QUESTIONS;A.;What;substances?;are;the;test;B. Why did a color change occur in the jar water? What does the color change;indicate?;C. Why did a color change occur in the dialysis bag? What does the color change;indicate?;D. What does the Benedicts reagent test detect? What does the test of the jar water;indicate? E. What DID NOT diffuse across the dialysis bag membrane? Why?;m;128;Hands-On Labs;Experiment;CELL STRUCTURE AND FUNCTION: CELL TYPES AND;TRANSPORT;DISCUSSION;A. Was your hypothesis supported or refuted?;B. How might the dialysis membrane tubing be similar to a plasma membrane?;C. What type of transport mechanism does this exercise simulate?;D. What can be concluded from this exercise?;LABORATORY SUMMARY;What have you learned from doing this laboratory?

 

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