Chapter 26 – The Origin and Diversity of Life
25. Which eon would contain rocks with no fossils?
26. A scientist is analyzing air bubbles trapped in ancient rocks that can be used to
understand the ancient atmosphere. What do you expect the scientist will observe when
comparing rocks younger than 3.8 billion years old to rocks older than 3.8 billion years?
Chapter 26 – The Origin and Diversity of Life
Clarify Question
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What is the key concept addressed by the question?
o This question addresses carbon in the atmosphere.
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What type of thinking is required?
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•
What do you already know about carbon in the atmosphere?
Choose Answer
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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?
Chapter 26 – The Origin and Diversity of Life
27. If a scientist found very high concentrations of organic biomarkers deep inside a 3.9
billion year old meteorite, how would this effect the explanation of the origins of life on
Earth?
Chapter 26 – The Origin and Diversity of Life
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 the role of meteorites in the origin of life?
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?
Chapter 26 – The Origin and Diversity of Life
28. During the snowball earth temperatures at the equator rarely exceeded -20 degrees
Celsius. Why didn’t heat from the sun melt the ice?
29. What would result for global climate from a massive drop in atmospheric carbon
dioxide?
30. Why have plants been implicated in the Ordovician and Devonian glaciations, but not the
Proterozoic glaciations?
Chapter 26 – The Origin and Diversity of Life
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•
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•
What type of thinking is required?
Gather Content
•
What do you already know about glaciation?
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?
Chapter 26 – The Origin and Diversity of Life
31. How did humans colonize the New World?
Chapter 26 – The Origin and Diversity of Life
Clarify Question
•
What is the key concept addressed by the question?
o This question addresses human migration.
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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
Chapter 26 – The Origin and Diversity of Life
32. What is the advantage of having cyanobacteria living inside a cell?
Clarify Question
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•
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What do you already know about endosymbiosis?
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Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
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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?
Chapter 26 – The Origin and Diversity of Life
33. Infolding of the cellular membrane has led to the development of the
True / False Questions
34. RNA was probably the first molecule used to encode genetic information; the use of
DNA came later. This is due to RNA’s inherent stability and its ability to store information
more accurately than DNA.
Multiple Choice Questions
35. How would the hydrolysis of phosphodiester bonds impede the origin of life?
Chapter 26 – The Origin and Diversity of Life
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 the molecular basis of early life-forms?
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?