Download Cellular Biology Formal Lab #1 Observing Cells

Cellular Biology
Formal Lab #1 Observing Cells
Name____________________
This lab will be completed individually. All work is to be completed on the paper- follow the
procedure as listed on page 16-19 in your text book and record your answers here.
Part 1- Calculating Field of View/ Estimating the Size of Cells
Complete Steps 1-4ab. Record observations in the chart below:
Observations Chart: Part 1. (Show all work)
Measured Field of View
Low Power
Calculated Field of View
Medium
Power
High
Power
Part 3- Examining Aquatic Leaf Cells
Complete steps 14-18. Answer the questions and make observations in the space below:
(Step 17)
What is cytoplasmic streaming? What is the purpose?
Did you observe any cytoplasmic streaming? Y or N
(i) Using the medium power objective lens, use the Cell Diameter Equation (given in Part 1, step 6
(e)) to calculate the size of the cell you looked at in step 17:
(j) Sketch and label a diagram of a leaf cell (you can include 2-3 neighbouring cells). At the bottom
of your biological drawing, write the magnification of the drawing AND the number of chloroplasts that
you count:
Part 4: Examining Potato Cell Amyloplasts
Complete steps 19-23. Answer the questions and make observations in the space below:
What is an amyloplast? What is its function?
(k) Using the medium power objective lens, use the Cell Diameter Equation (given in Part 1, step 6
(e)) to calculate the size of the cell you looked at in step 17:
(l) Sketch and label a diagram of a potato cell (you can include 2-3 neighbouring cells). At the
bottom of your biological drawing, write the magnification of the drawing.
Part 6: Examining Liver Cells
Complete steps 28-30: Answer the questions and make observations in the space below:
(o) Using the HIGH power objective lens, use the Cell Diameter Equation (given in Part 1, step 6 (e))
to calculate the size of the cell you looked at in step 17:
(p) Sketch and label a diagram of a liver cell. At the bottom of your biological drawing, write the
magnification of the drawing.
Application and Inquiry
1. Describe the shape of plant cells:
2. What is the average number of chloroplasts per cell? What shape are the chloroplasts?
3. Which are larger, the chloroplasts or the nuclei or leaf cells?
4. Describe the change in potato cells after they were treated with iodine solution.
5. Where is starch stored in potato plants? How do you know?
6. Summarize similarities and differences between the plant and animal cells you observed in THIS
lab activity. Include differences in cell size in your summary.