User:Tunji Odunlami/Notebook/Biology 210 at AU

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Lab 1. Biological Life at AU Tunji Odunlami Instructor: Alyssa Pedersen June 30, 2014

Introduction: Observing organisms in AU transect

Purpose: The purpose of this experiment is to make observations that will allow for a better understanding of natural selection and how it drives evolution. Materials and Methods: This experiment required the observation of green algae in the Volvocine line. The samples of green algae examined were the Chlamydomonas, Volvox, and Gonium. Characteristics such as the number of cells, mechanisms of motility, and colony size were determined and later recorded. This was followed by observing a niche at American Universities campus. A 20 by 20 meter transect was marked and general characteristics such as topography, location, and abiotic components were identified and recorded. This experiment entailed the making of a Hay Fusion Culture. This was done by weighing 10 to 12 grams of soil from the transect and placing it in a jar with 500ml of water. About .1 grams of dried milk was mixed into the jar for 10 seconds. The top of the jar was then removed and placed on the lab table.

Observations and Data: Transect 5 appeared quiet with few visible abiotic components. Ants were seen covering several rocks along with a brown bird on a tree. The tree appeared to be approximately 20 to 25 feet in height. This tree stood directly in the middle of the transect and was visibly bigger that the other trees. The transect was filled with green moss and occasional patches of long green grass. Soil was also seen on the ground in the midst of rocks and many different shaped stones. The largest stone was seen directly east of the transect and stood out in comparison to the other stones because of its apparent mass.

The observations and data should be: (1) Recorded honestly!!! Remember, sometimes unexpected findings are what lead us to the best scientific advances. Everything has some meaning, even if it doesn’t make sense at the time (2) Recorded as you go along in the notebook. Don’t trust your memory. You will forget the little details. You cn make notes and then transfer to a lab notebook or openwetware. (3) Recorded as completely as possible. You don’t need to interpret the data in this section, for you will do that in the next section (4) Recorded in an easy to read format. You can draw graphs or write tables in this section to illustrate your data in a more user-friendly way

Conclusions Your conclusions should be based on your data. Therefore, they may not agree with your purpose or hypothesis, and this is O.K. Explain whether your data supported or refuted your hypothesis. You may want to include any ideas that this experiment generated before you forget them. This is where you can make suggestions to improve your experimental design and say what you plan to do next (e.g., “next time I may want to harvest a sample from 5 inches below the surface because I think that the temperature at the surface is too cold to get a diversity of protists…”)

Remember, unless your data is recorded in a notebook in an accurate and precise fashion, it can never be used to advance science!!!