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Bio Lab Report

In: Science

Submitted By pri293
Words 339
Pages 2
Tuong Nguyen
Professor Eneigho
Bio 42
11 March 2014
Bio Lab Report #3
For Lab on Thursday Feb 28
Procedure 24.1
Question 2: What is the shape and size of each bacteria colony? * Shape: circular, irregular, filamentous, rhizoid * Size: The size of the colony can be a useful characteristic for identification. The diameter of a representative colony may be measured. Tiny colonies are referred to as punctiform.
Procedure 24.8
Question 6: Do all cells of a trichome of Cillatoria appear similar?
Yes
Question 7: a. Do adjacent cells share a common sheath?
Yes
b. What do you suppose is the function of the sheath?
To protect and to keep the colony together c. Do clusters of Gloeocapsa represent multicellular organism? Why or why not.
No, because you can break down the cells without killing them d. What is the best stain for Gloeocapsa, India ink or methylene blue?
Methylene blue
Question 8: a. How is the shape of Merismopedia different from other cyanobacteria you studied in this exercise?
Merismopedia is a flat, square colony one cell thick b. How would a colony attain this shape?
Equal divisions in two planes
Procedure 24.6
Question 4: a. Where are the bacteria? Are they between cells or inside cells?
Inside the cells b. Why is this relationship between a plant and bacterium called a mutualism?
Mutualism is any relationship between individuals of different species where both individuals benefit. For some plants their relationship is mutual with certain bacterium as it benefits both species. In other cases one may harm the other in which case the relationship is not mutualism c. How does Rhizobium benefit from this association?
Nutrients from the host d. How does the host plant benefit from this association?
Nitrogen supply from the bacterium
Gram Stain
Question 3: a. Which type of bacteria is...

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