Nitrogen __________ by bacteria in root __________ gives a plant extra nitrogen. Fill in the blank(s) with the appropriate word(s)
fixation; nodules
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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, and a "1" indicates the derived condition. Which species would you designate as the outgroup?
A. 1
B. 4
C. 2
D. 3
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?
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?
Why do early successional stages harbor many r-selected species?
a. they often require shade b. they are long-lived c. they are not damaged by disturbances d. they produce many small seeds that colonize open areas e. they grow slowly
How does the antiparallel polarity of DNA strands contribute most to the integrity of genetic information?
A) A DNA double helix cannot be broken or degraded. B) The antiparallel polarity of the strands means that replication occurs more quickly, decreasing the likelihood of DNA damage. C) Hydrogen bonding between strands is very stable, so DNA bases cannot be not damaged by environmental agents. D) Both antiparallel strands can be replicated continuously, which is more accurate than discontinuous replication. E) Each antiparallel strand can serve as a template to produce the other strand in the event of DNA damage.
The word hormone comes from the Greek word meaning
a. target. b. response. c. secretion. d. set in motion. e. internal gland.