Ordovician and Silurian Communities By: Linda Zantout Taxon Count Life Habit Complete or Broken Body or Mold Period Trepostomes 2 Epifaunal Suspension Feeder Broken Body Ordovician Platystropha 4 Epifaunal Suspension Feeder Complete Mold Ordovician Homotrypa 1 Epifaunal Suspension Feeder Broken Mold Ordovician Batostomella 3 Epifaunal Suspension Feeder Broke Mold Ordovician Strophomena 1 Epifaunal Suspension Feeder Broken Mold Ordovician Crinoids 3 Epifaunal Suspension Feeder Broken Body Ordovician Laptaena 1 Epifaunal Suspension Feeder Broken Mold Ordovician Data Analysis and Interpretation […]
Abstract Planaria Dugesia and Annelid Lumbriculus were observed in three different solutions (freshwater, 2.5mM locostatin, and 2.5 mM colchicine) after being cut in half sagittally. The purpose of this experiment was to test the significance of the worms’ environment on their regeneration process. Over the course of ten days, all worms in colchicine eventually died while both species of worms in freshwater and in locostatin solution survived and successfully completed regeneration. The results are significant because it exemplifies that regeneration […]
Written by Aida Martinez Introduction All organisms require a metabolic process that allows them to convert something they intake into energy. To convert light into energy, all organisms contain tetrapyrroles (involved in energy transfer, catalysis and transduction) (Reinbothe 1995). Of the greatest sources of energy is photosynthesis. Photosynthesis is a metabolic process (present in photosynthetic organisms) that intakes light, carbon dioxide, minerals, and water to produce chemical energy such as sugars, ATP and oxygen. Sugars and ATP are stored in […]
Written by Corinne Introduction Microorganisms can be transmitted from infected to healthy persons in a variety of ways. Two ways emphasized in this lab report are transmission via skin to skin contact, and transmission via fomites. Fomites are objects or substances which are not living but capable of transmitting microorganisms between people. Fomites become especially dangerous in hospitals or other healthcare facilities, as they can transmit nosocomial infections. Nosocomial infections are acquired by patients while in a hospital setting, […]
Written by Miranda ABSTRACT: C-fern spores have the ability of exhibiting both male and hermaphroditic sexes. Hermaphroditic gametophytes are always developed first, and if they release enough of the pheromone antheridiogen, male gametophytes will develop. Higher spore densities should show evidence of higher male populations. The gametophyte development can be observed under dissecting microscopes. Population densities were calculated each week for three weeks and based off of data collected, male population was slightly higher in higher density environments, but further […]
Written by Sarah Introduction Enzymes are proteins that are critical to catalyzing reactions (Brooker, Widmaier, Graham & Stiling, 2011). Like most proteins, they are synthesized by the ribosomes in the cell. They react with a specific substrate in order to increase the rate of a chemical reaction within the cell. Without enzymes, reactions would be significantly slower and we would not be able to do the most basic functions, such as breathing or digesting food. Amylase is an type of […]