User talk:Eyerusalem Abebe/Notebook/Biology 210 at AU

3/21/2015

Overall this is a very nicely organized entry. You should include the concentration of retinoic acid and the stages of the embryos at the start of the experiment. You made a lot of observations, but they are all qualitative. For these, it is important to note how many embryos were observed. For example, if you looked at pigmentation in all of the surviving embryos, you should say that, or if you looked at a sample of 3...you could also say something like "all three experimental embryos had darker pigmentation then the 3 control embryos." Then there are actual measurements...if you preserved embryos from day 7, you could still measure the length and eye diameter. Whenever you have quantitative data like length for multiple fish, you can calculate a mean ± standard deviation and do a statistical test. One thing to address in your discussion is why the experimental embryos might appear yellow...LS

3/6/2015 Good job! You didn't mention whether your bacteria were gram positive or negative, and whether the colony description matched. LS

2/22/2015

Vert lab - I'm glad that you listed your sources for your animal identification and ecological concepts. However, you didn't include the animal classifications from phylum to species level. Trophic is the correct word to describe levels of a food chain, not topographic (that is for maps).

Invert lab - Good job, though you didn't describe how the Berlese funnel was created in either the last lab or this lab. LS

2/15/2015 Your charts were good and your description of the mushroom. For the plants, you needed to identify the Genus (this shouldn't be hard since you know the common name of most of them). Also don't forget pictures! This helps you verify what you identify. While it is true that you can't find seeds of all of the plants, all angiosperms have seeds. ONLY angiosperms can be classified as monocots or dicots. Based on what your other lab members wrote and the common names you listed, I think all but one of your plants are dicot angiosperms. LS

2/6/2015 Great! Your conclusion section especially was very good. LS

1/30/2015 Lab 1 was great. For lab 2, I appreciated your drawings and detailed methods. However, you needed to add a little more description of the protists you identified. Which two niches did you choose, and which protists came from each? What was the length and motility of the protists? LS