Lakes are highly stratified
What will be an ideal response?
-cyanobacteria at the top
-O2 at the top
-chloroflexi and sulfur bacteria
-H2S
-sulfur bacteria and sulfate-reducing organisms
-oligotrophic lake (diluted nutrients)
-eutrophic lake (rich nutrients)
---have a higher amount of sulfur bacteria and sulfate-reducing organisms
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In Cell 3,
Consider the following plant cells floating in an open beaker containing 0.2M sucrose. By definition, an open beaker has a pressure potential 0 MPa. Assume that the cells have come to equilibrium with the solution in the beaker.
A. ?p = 0.0 MPa and ?w = -0.5 MPa.
B. ?p = 0.0 MPa and ?w = 0.0 MPa.
C. ?p = +0.5 MPa and ?w = -0.5 MPa.
D. ?p = -0.5 MPa and ?w = -0.5 MPa.
E. ?p = 0.0 MPa and ?w = +0.5 MPa.
Clarify Question
What is the key concept addressed by the question?
What type of thinking is required?
What key words does the question contain and what do they mean?
Gather Content
What do you already know about water potential? How does it relate to the question?
Consider Possibilities
What other information is related to the question? Which information is most useful?
Choose Answer
Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
There is concern that transgenic genes have been found in unrelated crops. Could such genetic transformation occur
without traditional breeding programs? What will be an ideal response?
You and your friend are on vacation at Yellowstone Park. The plaque in front of a sulfur hot spring reads: “This sulfur spring is 80°C, has a pH of 2, and contains large amounts of sulfur which is oxidized by Sulfolobus species of archaea.” Your friend is excited. “Boy, if those microbes are that tough they should be easy to grow in the lab. I think I’ll work with those for my summer project.” What do you think?
A. You agree, and decide to partner with your friend to work on this organism as well. B. A species adapted to such extreme conditions would probably not be easy to culture in the very different conditions of a lab. C. The sulfur spring is pretty extreme, but after a few days the individual archaea should have adapted to lab culture conditions. D. The sulfur spring is pretty extreme, but after a few generations the species should have adapted to the lab culture conditions. Clarify question: What is the key concept addressed by the question? What type of thinking is required? Gather Content: What do you already know about replicating the environmental conditions of hot springs in the lab? What other information is related to the question? Choose Answer: Given what you now know, what information is most likely to produce the correct answer? Reflection on Process: Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
What activates protein kinase C?
a. IP3 b. DAG c. cAMP d. PIP2 e. calcium ions