A&P 1 - Anatomy
Lab 3 Mitosis and Meiosis BIO201L
Student Name:
Access Code (located on the lid of your lab kit):
Pre-Lab Questions
”1. What are chromosomes made of?”
”2. Compare and contrast mitosis and meiosis. ”
”3. Cancer is a disease related to uncontrolled cell division. Investigate two known causes for these rapidly dividing cells and use this knowledge to invent a drug that would inhibit the growth of cancer cells. ”
Experiment 1: Observation of Mitosis in a Plant Cell
Table 1: Mitosis Predictions
Predictions
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Supporting Evidence
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Table 2: Mitosis Data
Chosen Image
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Stage
Number of Cells in Stage
Total Number of Cells
Calculated \% of Time Spent in Stage
Interphase
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Prophase
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Metaphase
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Anaphase
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Telophase
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Cytokinesis
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Table 3: Stage Drawings
Cell Stage
Drawing
REMEMBER: Your drawings should have your name and access code handwritten in the background.
Interphase
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis
Post-Lab Questions
”1. Label the arrows in the slide image below with the appropriate stage of the cell cycle. ”
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”2. What stage were most of the onion root tip cells in? Why does this make sense? ”
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”3. As a cell grows, what happens to its surface area : volume ratio? (Think of a balloon being blown up). How is this changing ratio related to cell division? ”
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”4. What is the function of mitosis in a cell that is about to divide? ”
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”5. What would happen if mitosis were uncontrolled? ”
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”6. How accurate were your time predictions for each stage of the cell cycle? ”
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”7. Discuss one observation that you found interesting while looking at the onion root tip cells.”
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Experiment 2: Tracking Chromosomes Through Mitosis
Once you have completed the digital exercise, select the “Results Table” button at the bottom right-hand corner of the screen and select the “Generate PDF” button at the top of the following screen. Insert your download into this document by selecting the Insert > Object > Text from file. Resize if necessary.
Lab 4 Diffusion and Osmosis BIO201L
Student Name: Click here to enter text.
Access Code (located on the lid of your lab kit): Click here to enter text.
Pre-Lab Questions:
”1. Compare and contrast diffusion and osmosis.”
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”2. What is the water potential of an open beaker containing pure water? ”
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”3. Why don’t red blood cells swell or shrink in blood? ”
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Experiment 1: Diffusion through a Liquid
Table 1: Rate of Diffusion in Corn Syrup
Time (sec)
Blue Dye
Red Dye
10
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20
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30
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40
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50
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60
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70
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80
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90
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100
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110
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120
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Table 2: Speed of Diffusion of Different Molecular Weight Dyes
Structure
Molecular Weight
Total Distance
Traveled (mm)
Speed of Diffusion (mm/hr)*
Blue Dye
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Red Dye
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*To get the hourly diffusion rate, multiply the total distance diffused by 30.
Post-Lab Questions
” 1. Examine the plot below. How well does it match the data you took in Table 1? ”
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”2. Which dye diffused the fastest? ”
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”3. How does the rate of diffusion correspond with the molecular weight of the dye? ”
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”4. Does the rate of diffusion change over time? Why or why not? ”
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Experiment 2: Diffusion - Concentration Gradients and Membrane Permeability
Table 3: Indicator Reagent Data
Indicator
Starch Positive
Control (Color)
Starch Negative
Control (Color)
Glucose Positive
Control (Color)
Glucose Negative
Control (Color)
Glucose Test Strip
n/a
n/a
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IKI
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n/a
n/a
Table 4: Diffusion of Starch and Glucose Over Time
Indicator
Dialysis Bag After 1 Hour
Beaker Water After 1 Hour
Glucose Test Strip
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IKI
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Post-Lab Questions
”1. Why is it necessary to have positive and negative controls in this experiment? ”
ClickLab 5 Tissues and Skin BIO201L
Student Name: Click here to enter text.
Access Code (located on the lid of your lab kit): Click here to enter text.
Pre-Lab Questions:
”1. What is a tissue?”
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2. What is the function of epithelial tissue? ”
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3. What is the function of connective tissue? ”
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4. What is the function of muscular tissue? ”
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5. What is the function of nervous tissue? ”
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6. Describe sebaceous glands, sweat glands, and hairs with regard to the function of the skin. ”
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7. What is the function of melanin? ”
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8. List the similarities and differences of the layers of the epidermis. ”
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Experiment 1: Microscopic Slide Examination of Tissue
”Identify the following tissue slides: ”
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A) Epithelial Tissue Type
B) Epithelial Tissue Type
Connective Tissue
C) Connective Tissue Type
D) Connective Tissue Type
E) Connective Tissue Type
F) Muscular Tissue Type
G) Muscular Tissue Type
H) Unidentified Tissue Type
Post-Lab Questions
”1. What is the difference between simple, stratified and pseudostratified epithelial tissue? ”
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2. Describe the cell shape of squamous, cuboidal and columnar epithelial cells. ”
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3. Does the number of cell layers or the cell shape play a role in the function of the epithelial tissue? Provide three examples. ”
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”4. List and describe the different types of connective tissue. What similarities and differences did you notice when viewing the prepared slides? ”
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”5. What are the three components of the extracellular matrix in connective tissue? ”
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”6. What are the three types of cartilage? What are their similarities and differences? ”
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”7. What are the three types of muscular tissue? For each, describe the cell shape, the type of control (voluntary or involuntary) and the presence or absence of striations. ”
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”8. Looking at the nervous tissue, state the cell processes visible (i.e., axon) on the prepared slide. For each process, state the function. ”
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”9. What is the difference between multipolar, bipolar and unipolar neurons? ”
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Experiment 2: Microscopic Slide Examination—Skin
”1. Label the arrows in the following slide image: ”
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”2. Determine whether the following statements pertain to the epiderLab 7 The Muscular System BIO201L
Student Name: Click here to enter text.
Access Code (located on the lid of your lab kit): Click here to enter text.
Pre-Lab Questions
”1. How do banding patterns change when a muscle contracts?”
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”2. What is the difference between a muscle organ, a muscle fiber, myofibril and a myofilament? ”
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”3. Outline the molecular mechanism for skeletal muscle contraction. At what point is ATP used and why? ”
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”4. Explain why rigor mortis occurs. ”
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.
Experiment 1: Tendons and Ligaments
Post-Lab Questions
”1. Label the arrows in the slide images below based on your observations from the experiment. ”
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B- Click here to enter text.
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”2. How does the extra cellular matrix of connective tissues contribute to its function? ”
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”3. Why are tendons and ligament tissues difficult to heal? ”
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”4. What difference do you see between the tendon – muscle insertion image and the tendon image? ”
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”5. What differences do you see between the tendon and ligament sections? ”
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Experiment 2: The Neuromuscular Junction
Post-Lab Questions
”1. Are there few or many nuclei at the end plate? ”
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”2. What is a motor unit? ”
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”3. How is a greater force generated (in terms or motor unit recruitment)? ”
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”4. What types of sensors are present within the muscle to identify how much force is generated? ”
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Experiment 3: Muscle Fatigue
Table 2: Experimental Counts
Trial 1
Trial 2
Trial 3
Trial 4
Trial 5
Predicted Value
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Actual Value
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Post-Lab Questions
”1. How did the predicted results compare to the actual results? ”
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”2. Did you notice any changes in the number of repetitions you could perform, or how your hand felt after each of the trials? ”
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”3. Explain the actions that were occurring at the cellular level to produce this movement. Include sources of energy and any possible effect of muscle fatigue. ”
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”4. Hypothesize what would happen if blood flow was restricted to the hand when this experiment is performed. ”
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Experiment 4: Gross Anatomy of the Muscular System
Table 3: Gross Anatomy Data
Movement
Muscle(s) Activated
Action(s) of Muscle(s)
Forearm Ext
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