The correct sequence of events in translation is
A. elongation, termination, initiation.
B. initiation, termination, elongation.
C. initiation, elongation, termination.
D. termination, elongation, initiation.
E. elongation, initiation, termination.
Answer: C
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Of the following, which is the oldest event?
a. origin of fungi b. appearance of land tetrapods c. formation of Pangea d. age of dinosaurs e. all of these events are equally old
What is a key characteristic of exergonic reactions?
a. They consume energy. b. They require glucose fusion. c. Their products have more energy than the reactants. d. They convert some energy to less biologically useful forms. e. They involve the formation of bonds.
Communities with a high level of bacterial diversity are found in many habitats including soil and aquatic environments. Recent studies indicate this diversity is crucial to the functioning of these communities. The same studies have also found that phage abundance plays a critical role in the maintenance of the bacterial diversity within these communities. What is the probable role of phages in this community? (Check all that apply)
_____ they act as facilitators _____ they have a mutualistic relationship with the bacteria _____ they parasitize the bacteria _____ they have a commensal relationship with the bacteria _____ they compete with the bacteria for space and nutrients _____ they keep any one species of bacteria from becoming too abundant in the community 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 maintaining bacterial diversity in a community? What other information is related to the question? Choose Answer: Given what you now know, what information is most likely to produce the correct answer? Reflection 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?
In the accompanying figure, note the variation in these closely related birds. What does this illustrate?
a. hybridization
b. macroevolution
c. hybrid inviability
d. adaptive radiation
e. allometric radiation