Download Using the Microscope to Look at Elodea Cells

Using the Microscope to Look at Elodea Cells
Problem: What are the parts of a plant cell that are used in photosynthesis, as well as the used in respiration?
Background Information:
The cell you are going to look at in this lab is from the aquatic plant Elodea. Like any complex cell, it has
the basic organelles. You will not see the nucleus with the DNA in this lab, but the cell wall and chloroplasts will
be obvious. The chloroplasts are the site for photosynthesis in the cell; they contain chlorophyll, which traps
sunlight and thus enables the cell to combine carbon dioxide and water to make glucose (a simple carbohydrate
with the formula C6H12O6). You will be:
Materials: (per group)
Sprig of Elodea
Microscope
microscope slide
over slip
ruler
Procedure:
1.
2.
3.
4.
Always begin with your microscope in the lowest magnification.
Make a wet mount of an Elodea leaf on a microscope slide.
Place on the microscope stage with the leaf centered over the hole in the stage.
Focus with the course adjustment knob. If in 40X (with the 4X objective down), increase to low power.
(Revolve the 10X objective in place over the leaf until it clicks into place. Focus again.)
Draw and label several elodea cells at each magnification.
Using the Microscope to Look at Elodea Cells
Problem: What are the parts of a plant cell that are used in photosynthesis, as well as the used in respiration?
Background Information:
The cell you are going to look at in this lab is from the aquatic plant Elodea. Like any complex cell, it has
the basic organelles. You will not see the nucleus with the DNA in this lab, but the cell wall and chloroplasts will
be obvious. The chloroplasts are the site for photosynthesis in the cell; they contain chlorophyll, which traps
sunlight and thus enables the cell to combine carbon dioxide and water to make glucose (a simple carbohydrate
with the formula C6H12O6). You will be:
Materials: (per group)
Sprig of Elodea
Microscope
microscope slide
over slip
ruler
Procedure:
1.
2.
3.
4.
Always begin with your microscope in the lowest magnification.
Make a wet mount of an Elodea leaf on a microscope slide.
Place on the microscope stage with the leaf centered over the hole in the stage.
Focus with the course adjustment knob. If in 40X (with the 4X objective down), increase to low power.
(Revolve the 10X objective in place over the leaf until it clicks into place. Focus again.)
Draw and label several elodea cells at each magnification.
Biology
Photosynthesis/Respiration
Names: _____________________________
Pd.____
Date:_____________________
Elodea Cell Observation
Prelab questions:
1. Where in the plant cell does photosynthesis occur?
2. What is chlorophyll?
Data: Draw and label several elodea cells at each magnification.
Low (red)
Medium (yellow)
Biology
Photosynthesis/Respiration
HIGH (blue)
Names: _____________________________
Pd.____
Date:_____________________
Elodea Cell Observation
Prelab questions:
1. Where in the plant cell does photosynthesis occur?
2. What is chlorophyll?
Data: Draw and label several elodea cells at each magnification.
Low (red)
Medium (yellow)
HIGH (blue)