Objective: Determine the optimum temperature/sugar mix to maximize C02 production.
Purpose: To demonstrate an understanding of engineering principles.
Equipment: 2 Thermometers, 4 250ml beakers, 24g yeast, sugar, spoons, Hot plate, Water plate w/ wire rack.
Your procedures were signed off at the end of class on Thursday. Most of you decided to do some permutation of 2 temperatures w/ three different concentrations, or 3 temperatures w/ two concentrations. All lab stations are already set up for you to conduct your investigation.
Each lab station already has all of the necessary equipment. There are also two hot water pots you can use to pre-heat your water.
Please ensure you unplug the hot plates, and rinse out the beakers when you are done.
For multiple temperature trials, do the hottest temperature first. You can then cool that water down while your group is preparing for the next series.
Consider how to do this as a group, rather than just having everyone try to do everything... (group efficiency.)
ALL data MUST be gathered today, there will be no further opportunities.
You are restricted to only 6 treatments (24g of yeast) total. I do not have enough yeast to go beyond that.
When you are done, you can start working on your group poster. Here is a quick summary of the expectations:
Jim Baker Bioengineering
Solution Poster
·
Section 1:
o Research
Objective & Purpose
§ Why were we
doing this experiment?
o Ideas
Explored
§ In your
groups, you discussed a few different experiments before deciding on the one
you did. What were some of those ideas that you didn’t go with? Why didn’t you
choose them?
o Hypothesis
§ What did
you think would happen?
·
If manipulated, then responding, because science.
·
Section 2:
o Procedures
§ In 3-5 sentences,
explain your experimental procedure.
§ Use a
diagram if helpful.
o Variables
§ Manipulated,
responding, and controlled variables should be listed
·
Section 3:
o Data &
Calculations
§ A clean,
and easy to read data table should be included
o Graphs
§ A labeled graph
of some sort (you can decide which type would be best) should be included
·
Section 4:
o Conclusions
& Recommendations
§ ClEvR
Statement for Jim Baker
·
“Claim” should be your recommendation for his design
challenge
·
“Evidence” can come from any parts of experiments 1,
2, and/or 3.
·
“Reasoning” should show how the evidence supports the
claim. It should also provide a scientific reason as to “WHY” you got the
results you did.
o Changes
& Future Research
§ If you ran
your same experiment again, what changes would you make?
§ If there
was a “Part-4” to this yeast lab, what research could you further do to help
solve Jim Baker’s Design Challenge?
