During the Cretaceous period, ____
a. mammals diversified and flourished
b. life appeared on this planet
c. the first animals with shells and skeletons appeared
d. the dinosaurs reached their peak and then became extinct
e. the first human-like apes appeared
ANSWER: d
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The table shows the distribution of traits (A-E) in six extant species (1-6). A "0" indicates the ancestral condition, while "1" indicates the derived condition. Based on this data, which species would be considered the outgroup?
A. 1
B. 2
C. 3
D. 4
E. 5
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 cladistics?
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?
Which one of the following BEST distinguishes scientific areas of study from those that are not science?
A. Nonscientific areas of study have few facts. B. Scientific areas of study publish their findings and ideas. C. Scientific areas of study rarely make mistakes. D. Scientific areas of study always test their assumptions and ideas.
How does a muscle return to its extended condition after contracting?
What will be an ideal response?
Aerobic H2 oxidation is mediated by ________, and energy is ultimately produced using ________ and ATPase
a. dehydrogenase / a proton motive force b. dehydrogenase / oxygenic photophosphorylation c. hydrogenase / a proton motive force d. hydrogenase / substrate-level phosphorylation