If the activation energy for a chemical reaction is very high, the ____
a. reaction will have an overall net gain of energy
b. reaction will have an overall net loss of energy
c. reaction will progress slowly
d. reaction will progress quickly
e. reactants have a lower energy than the products
ANSWER: c
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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 has the greatest number of ancestral character states (pleisiomorpohies)?
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?
where is HPV located?
What will be an ideal response?
Why are most food chains limited to three to five trophic levels?
A) The higher the trophic level, the larger the organism; the larger the organism, the less likely it will be prey. B) The nutritional quality of existing biomass decreases with increasing trophic level. C) Most ecosystems have insufficient space to support the increased number of organisms that more trophic levels would require. D) There is insufficient energy to support more trophic levels.
Under favourable conditions, in which form do plasmodial slime moulds primarily exist?
a. as individual flagellated cells b. as spore-forming fruiting bodies c. as a single, multinucleated cellular blob d. as coordinated, multicellular blobs