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Locomotion in Protists

Locomotion in Protists

Introduction

In this part of the lesson, you will have a chance to learn more about a living organism and how it moves and then apply that knowledge to design, draw, and describe a practical application of one of the methods of locomotion you observe in the lab.


Paramecium

1. Obtain a slide and coverslip. Put a drop from the Paramecium culture jar on the slide and cover the drop with the coverslip.

2. Observe the Paramecia under both low (10X) and high (40X) power under the microscope.

3. Describe the movement of the Paramecia in your lab notebook. Thoroughly describe the speed and direction of the movement. Describe the structures a Paramecium uses for movement.

4. Sketch a diagram of a Paramecium in your lab notebook. Label the cilia.

5. Clean your slide and coverslip and use them for the next section of the lab.

Euglena

1. Put a drop from the Euglena culture jar on the slide and cover the drop with the coverslip.

2. Observe the Euglenas under both low and high power under the microscope.

3. Describe the movement of the Euglenas in your lab notebook. Thoroughly describe the speed and direction of the movement. Do the Euglenas move toward the light or away from the light? Describe the structures the Euglenas use for movement.

4. Sketch a diagram of a Euglena in your lab notebook. Label the flagellum.

5. Clean your slide and coverslip and put them away to dry.

Amoeba

1. Obtain a depression slide. Put a drop from the Amoeba culture jar on the slide. Do not use a coverslip.

2. Observe the Amoebas under low power only. Do not use high power, so that water will not get on the lens.

3. Describe the movement of the Amoebas in your lab notebook. Thoroughly describe the speed and direction of the movement. Describe what is happening inside the cell’s cytoplasm. Describe the structures an Amoeba uses.

4. Sketch a diagram of an Amoeba in your lab notebook. Label the pseudopods.

5. Clean your slide and use it for the next section of the lab.

Volvox

1. Put a drop from the Volvox culture jar on the slide. Do not use a coverslip.

2. Observe the Volvox colonies under low power only. Do not use high power, so that water will not get on the lens.

3. Describe the movement of the Volvox colonies in your lab notebook. Thoroughly describe the speed and direction of the movement. Describe what is happening inside the cell’s cytoplasm. Describe the structures a Volvox colony uses for movement.

4. Sketch a diagram of a Volvox colony in your lab notebook. Label the pseudopods.

5. Clean your slide and put it away to dry.

Conclusion

Answer these questions:

How are cilia and flagella similar? How are they different?

 

Describe the movement of the Amoeba.

 

What is happening within the cell as Amoebae use their pseudopods?

 

How are pseudopods useful to Amoebae?

 

How are cilia useful to Paramecia?

 

How are flagella useful to Euglenas and Volvox?

 

How are Volvox able to coordinate their movements? How is this similar to the schooling fish in the video? How is this different?

 

In what areas might these methods of locomotion have practical uses?

 

Following the Lab

You will work in pairs and use the Bioengineering Design student sheet to design a practical application for one of the methods of locomotion you have observed today.

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