Prelab Design - Photosynthesis and Respiration
Initially, let's review the ways that each process can be measured (think substrate consumption/product accumulation) and also the conditions that influence each process (amount of available substrates, environmental conditions, etc.)
Have a look at a couple of ideas for monitoring respiration or photosynthesis...
Have a look at a couple of ideas for monitoring respiration or photosynthesis...
Respiration chambers

Respirometer design...for use with terrestrial organisms - insects, germinating seeds. Click on the diagram to work through an interactive explanation of the use of the chamber with carbon dioxide "scrubbing."
buffet of yeast respiration Protocols
Submerged aquatic plants

Elodea is an easily available and commonly used aquarium plant. Given what you know about plants utilizing both respiration and photosynthesis, but being sensitive to the conditions in the water environment, how could you use tools to measure oxygen (probeware) or carbon dioxide/pH (probeware/monitors, soluble indicators, or pH indicator strips)?
Begin you own individual plan...
What process to test?
What technique to use to measure activity (DV)?
What organism to use?
What factor to vary in the research question (IV)?
Make certain to include
clear identification of the IV, w/ range
DV, with uncertainty (precision) of the measurement tool
table of the variables to be controlled, their effects and how to control
scientific background
technique for acquiring sufficient replicates of DV
technique (and logic) for encompassing a meaningful range of iV
clear step-by-step directions (with citations!!)
safety considerations
plans for doing statistical analysis
Design due Tuesday...time in class to complete.
clear identification of the IV, w/ range
DV, with uncertainty (precision) of the measurement tool
table of the variables to be controlled, their effects and how to control
scientific background
technique for acquiring sufficient replicates of DV
technique (and logic) for encompassing a meaningful range of iV
clear step-by-step directions (with citations!!)
safety considerations
plans for doing statistical analysis
Design due Tuesday...time in class to complete.