Biology 15
Lab # 4
Professor Passerini
September 23, 2015
Scot Albert
Lab #4
Questions 1a,b,c, 2, 3a,b,c, 4, 5a,b,c, 7, 11c, d, e, 12a,b
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1-
a-They are found primarily in the thylakoid membranes.
b-No. Cyanobacteria do not have distinct nuclei.
c-Gloeocapsa
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2-They were much smaller by comparison.
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3-
a-I think we decided in class to call them a brick prism.
b-I recall the concensus was 2 layers at minimum.
c-The cell wall surrounds the cell membrane and provides these cells with structural support and protection. In addition, the cell wall acts as a filtering …show more content…
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5-
a-My first answer is: Only with some difficulty and eye strain.
(An alternate point of view stated the following:
In order to view the nuclei of an elodea cell, the observer would first need to stain the cell according to whether they would like to stain it living or dead. If the observer wishes to see the cells behavior, he would treat it with a dye solution known to not harm the species, and mount it to a microscope slide.
If he wished to observe the cell in a static state, he would perform fixation, via heat or otherwise, to kill the cell.
Then the cell would be stained and mounted to a slide.)
b-The nucleus is an organelle found in eukaryotic cells.
Inside its fully-enclosed nuclear membrane, it contains the majority of the cell's genetic material. This material is organized as DNA molecules, along with a variety of proteins, to form chromosomes. The main function of the cell nucleus is to control gene expression and mediate the replication of DNA during the cell cycle.
c-Chloroplasts are larger than
Lab # 4
Professor Passerini
September 23, 2015
Scot Albert
Lab #4
Questions 1a,b,c, 2, 3a,b,c, 4, 5a,b,c, 7, 11c, d, e, 12a,b
----------------------------------------------------------
1-
a-They are found primarily in the thylakoid membranes.
b-No. Cyanobacteria do not have distinct nuclei.
c-Gloeocapsa
------------------------------------------------------
2-They were much smaller by comparison.
-------------------------------------------------------
3-
a-I think we decided in class to call them a brick prism.
b-I recall the concensus was 2 layers at minimum.
c-The cell wall surrounds the cell membrane and provides these cells with structural support and protection. In addition, the cell wall acts as a filtering …show more content…
--------------------------------------------------------
5-
a-My first answer is: Only with some difficulty and eye strain.
(An alternate point of view stated the following:
In order to view the nuclei of an elodea cell, the observer would first need to stain the cell according to whether they would like to stain it living or dead. If the observer wishes to see the cells behavior, he would treat it with a dye solution known to not harm the species, and mount it to a microscope slide.
If he wished to observe the cell in a static state, he would perform fixation, via heat or otherwise, to kill the cell.
Then the cell would be stained and mounted to a slide.)
b-The nucleus is an organelle found in eukaryotic cells.
Inside its fully-enclosed nuclear membrane, it contains the majority of the cell's genetic material. This material is organized as DNA molecules, along with a variety of proteins, to form chromosomes. The main function of the cell nucleus is to control gene expression and mediate the replication of DNA during the cell cycle.
c-Chloroplasts are larger than