please see the uploaded word file.

Activity 3: Use and ro . 1 . At your table are i duct,on of CO2 and 02 in metabolism

chambers are 1 ° graphs that summarize the data from metabolic chambers. These

probes record :ea ed 8nd ea~ chamber is set up with an 0 2 probe and a_ CO2 probe. These recordin he concentration of each gas in the chamber every five minutes . The

2 . Graph 11! ~= ~totrefd on a data recorder attached to the probes. d g r a a rom a chamber containing a small plant that has been placed un er f

row ights on a timer. The plant was exposed for twelve hours and under dark conditions or twelve hours . ~ Diag~am the concentration of CO2 and 0 2 over twenty-four hours.

3 · raph 2 is the data from a chamber containing several crickets. For their safety the crickets were only housed in the chamber for 8-12 hours. a· Diagram the concentration of CO2 and 0 2 over the time that the crickets have been in

the chamber.

4 - At your table , d_iscuss what is happening in each chamber and then draw a pre_di_cted graph for what you think the data would look like over a 24-hour cycle if it were containing BOTH plants and crickets.

-E C. C. -.... Q)

..0 E ro

.r; (.)

-~ en Q) en en ro C> -0 C 0

:.:; ro .... ..... C Q) 0 C 0

(.)

0600

• 1200 1800

Time of day 2400 0600

Figure 2: graph diagraming concentrations of CO2 and 0 2 changes in a metabolic chamber containing both plants and crickets. The colored bar represents the light and dark conditions over 24 hours .

~ -, v"~ C\ { 0 ~ \('

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