When ionic bonds are formed
1.atoms share electrons.
2.atoms either gain or lose electrons.
3.the atomic number of an atom changes.
4.isotopes are formed.
2
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Which statement is TRUE of methanogenic and extremely halophilic Archaea?
A) The methanogens are obligate aerobes; the extreme halophiles are obligate anaerobes. B) The methanogens are obligate anaerobes; the extreme halophiles are mostly obligate aerobes. C) Both the methanogens and the extreme halophiles are obligate aerobes. D) Both the methanogens and the extreme halophiles are obligate anaerobes.
Assume that the ancestor of this phylogeny had vascular tissue and chlorophyll. If this is true, which answer lists all key traits of a ginkgo?
A. vascular tissue, needles, tree, and chlorophyll
B. tree and seeds
C. seeds, tree, vascular tissue, and chlorophyll
D. needles, tree, and seeds
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?
A sprinter would have a high proportion of __________, and a marathon runner would have a high
proportion of __________. a. red fibers; white fibers b. fast-oxidative fibers; slow-oxidative fibers c. red fibers; fast-oxidative fibers d. red fibers; slow-oxidative fibers e. slow-oxidative fibers; slow-oxidative fibers
The ranges of black bears and brown bears overlap. However, black bears spend most of their time in the woods and
brown bears spend most of their time along the river. Which of the following best describes why black and brown bears do not interbreed? a. habitat isolation b. temporal isolation c. biological isolation d. evolutionary isolation e. environmental isolation