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Biol 1245 - Tetrahymena week 3 pre lab assignment

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Tetrahymena week 3 pre lab assignment for Biol 1245. *Essential!! * For you, at a price that's fair enough!!

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  • September 1, 2024
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Week 3 Pre-Lab Assignment



1. In this lab, you will work with tetrahymena, a ciliated protozoan.

a. Is tetrahymena unicellular or multicellular?

 Tetrahymena is unicellular

b. Is tetrahymena prokaryotic or eukaryotic?

 Tetrahymena is eukaryotic

c. Is tetrahymena heterotrophic or autotrophic?

 Tetrahymena is heterotrophic

2. Refer to your textbook or other source, but do not plagiarize its words! Use your own

words to answer these questions:

a. What is phagocytosis?

 Phagocytosis is the process of a cell to engulf other particles or cells to

consume them.

b. What are digestive vacuoles?

 Digestive vacuoles are a membrane bound organ that contains digestive

enzymes for the cell to extract nutrients from particles.

3. Assume that a cell culture has a density of 108 cells/mL. You transfer 20 microliters (20

μL) of this culture onto a microscope slide. How many cells do you expect will be in this

20 μL drop you placed under the microscope?

a. 20 µL= 20* 10-3mL, 108 cells/mL,

b. 20* 10-3mL * 108 cells/mL = 2 * 106 cells

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