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Terms in this set (31)
Each pore or opening on a leaf can be closed by 2 cells bordering that opening. The 2 cells bordering that opening are called
What was the purpose of the beaker without the fish?
It was the control sample
Select the correct equation below that represents the REVERSIBLE chemical reaction that occurs when CO2 is added to water
CO2 + H20 <——>H2CO3 <——> H+ + HCO3-
What is the purpose of photosynthesis?
To transfer light energy into high energy organic compounds
This term refers to ALL the essential activities occurring within cells?
What is the color of a Phenolphthalein solution that is pH 10?
The ultimate source of energy is
All organisms make their ATP through a process called
Select the summary equation that best describes Aerobic Cellular Respiration
C6H12O6 + O2 ——> CO2 + H20 + ATP
This process or measurement technique is used to determine how much the pH of a solution has changed
Cellular work includes
Cellular movement, membrane transport, construction and maintenance of structures, reproduction, and homeostasis.
The source of energy used to power cellular work is a molecule called
Direction of energy transfer
Sun , high energy organic compounds, ATP, Cellular Work (Life)
The two major metabolic pathways involved in making energy available for cellular activities
Photosynthesis and Cellular respiration
equation for photosynthesis
cellular respiration equation
What type of organisms perform photosynthesis?
All plants, some protists (algae), and some bacteria (Cyanobacteria)
What type of organisms perform cellular respiration?
Are there any other ways organisms make high energy organic compounds besides photosynthesis?
Yes, some bacteria called Chemoautotrophs use inorganic substances as an energy source
How can you measure the rate of photosynthesis or cellular respiration?
Time it takes to see a change
How does a change in CO2 concentration change the pH of an aqueous solution?
When CO2 is added to water the pH of water decreases. When CO2 is removed the pH increases.
What is the color of phenolphthalein at a pH below 8.3?
Would cellular respiration in fish raise or lower the surrounding pH?
Due to fish expelling C02, the surrounding pH would lower Causing an increase in h+ concentration
Would cellular respiration in Elodea raise or lower the surrounding pH?
It would raise the pH because CO2 is being consumed by the Elodea.
Would photosynthesis in Elodea raise or lower the surrounding the pH?
It would raise it if the rate of photosynthesis was greater
How can you measure how much the pH of an aqueous solution has changed in response to photosynthesis or cellular respiration?
What are independent variables?
The CO2 levels
What are the dependent variables
Why should you pour the control solution through a net?
In a controlled experiment, you must administer the same procedure(S) to both the experimental and control group
(NC-NE)/(WxT) = u moles of CO2/ g of fish tissue / hour
Rate of cellular respiration equation
Why did we measure the volume of the Elodea?
To see if it absorbed the CO2 from the water or if it absorbed water in general as compared to its initial mass
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