en t PA = 8.32 21 Urchin Experimental Design Worksheet 80% Species are adapted t
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en t PA = 8.32 21 Urchin Experimental Design Worksheet 80% Species are adapted to develop under the conditions of their normal environments. For urchins, this includes adaptations to specific water temperature, salinity, and pH (among others). Rising global temperatures and ocean acidification present significant threats to aquatic organisms Researchers seek to understand how organisms will respond to these potential changes in environment. Many researchers study organismal distributions or behaviors in response to climate change, we will be examining development. Assignment: Design and execute an experiment to examine the sea urchin's (Arbacia punctulata) ability to develop in the face of environmental change. This week in class you will discuss experimental design with the class and then present your experiment (on the chalkboard) to the class during lecture on Thursday (February 1). Your classmates and instructor will provide feedback on your experimental design and then you will submit your final experimental design and list of material on Friday (Feb. 2) When designing your experiment and presenting your experimental plan, keep the following aspects in good experimental design in mind. What is your question? What is your hypothesis and what prediction can you make for this hypothesis? What variable are you measuring in your experiment? What are your treatments? How many? How many embryos will you use per treatment and how many times will you repeat the experiment? What are your controls? What protocol will your follow? What materials will you need to carry out this experiment? Data Collection and Measurements: How will you acquire your data? What stage will you examine? What are you looking for? How will you quantify data at the end? What is your experimental timeline? When will you start the experiment, when will you examine your embryos? Will you sample them repeatedly or only once? Will you have time to repeat the experiment if it fails?Explanation / Answer
Answer:
What is your question?
What is your hypothesis and what prediction can you make for this hypothesis
What variable are you measuring in your experiment?
What are your treatments? How many?
How many embryos will you use per treatment and how many times will you repeat the experiment?
What are your controls?
What protocols will you follow? What materials will you need to carry out this experiment?
Data collection and Measurements: How will you acquire data? What stage will you examine? What are you looking for? How will you quantify data at the end?
What is your experimental timeline? When will you start the experiment, when will you examine your embryos? Will you sample them repeatedly or only once? Will you have time to repeat the experiment if it fails?
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