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Biol 1245 - Tetrahymena week 3 pre lab assignment
- Course
- BIOL 1245
- Institution
- Saint Louis University
Tetrahymena week 3 pre lab assignment for Biol 1245. *Essential!! * For you, at a price that's fair enough!!
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Week 3 Pre-Lab Assignment1. 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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