Vlab Report Essays

2114 Words May 7th, 2013 9 Pages
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Virtual Lab Report: Part I
Due by: 11:59 PM PST on the second Saturday of class

Virtual Lab 1: Virtual Microscopy
A. Estimate the size (length and width) of these microscopic objects in micrometers (microns):
1. An E. Coli cell. 3 x 0.6 um =1.8 um
2 A mitochondrion. 4 x 0.8 um = 3.2 um
3. A Red blood cell. 8 um
4. A virus. _Hepatitis 45 nm = .045 um
5. A water molecule. 275 pm =.275 um

B.
1 Describe three differences between prokaryotic and eukaryotic cells.
Prokaryotic don’t have a nucleus and their cell type is unicellular. They do not have a true membrane bound nucleus and they have loop DNA. They are rod shaped, spherical and spiral and they divide by binary fission. They are smaller
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Those cycles include interphase, prophase, metaphase, anaphase and telephase and then after the cycle there are four daughter haploid cells created.

Prokaryotic cells need to use binary fission to reproduce and also reproduce the DNA within a cell. Prokaryotic cells do not have a nucleus and their cell division is more similar to mitosis than meiosis because in binary fission the replication of two daughter cells come from the single cell which was identical.

C. Cellular metabolism
1. In a paragraph or two compare and contrast photosynthesis and cellular respiration.
Cellular respiration and photosynthesis both contain metabolic pathways. They both use an electron transport system to produce a proton and ATP.
Cellular respiration occurs in the mitochondria and uses oxygen and expels energy and usually occurs at night and in both plants and animals and also releases carbon dioxide.
Photosynthesis can occur only in light and stores energy and also uses water.
2. Describe the ecological relationship between photosynthesis and cellular respiration.
The biggest thing these two share in a relationship is that one cannot work without the other. Without one then the other cannot occur. When cellular respiration releases carbon dioxide it is used as a raw material in photosynthesis.

Most of my information came from the links on the NU portal but I also used this website for additional information: http://www.emc.maricopa.edu/faculty/farabee/biobk/biobookcycles.html

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