Which of the following events signals the termination of translation?
A) The ribosome reaches the end of the mRNA.
B) The ribosome reaches a start codon.
C) The ribosome reaches a stop codon.
D) The ribosome runs out of charged tRNAs.
E) The polypeptide chain folds into a protein.
C
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Biodiversity refers to _____
a. genetic diversity b. species diversity c. ecosystem diversity d. all of these
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. Are phages a density-dependent or a density-independent regulating factor?
A. density-dependent B. density-independent 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 density-dependent versus density-independent factors affecting 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?
Remote oceanic islands are characterized as having disharmonic biota, meaning the number and relative proportions of taxa living on the island differ significantly from the number and relative proportions of taxa on the nearest continental mainland
area. Each island system is disharmonic in its own unique way. Why?
Ignaz Semmelweis demonstrated the importance of (antisepsis/vaccination/hand-washing) as a means of preventing disease transmission.
Fill in the blank(s) with the appropriate word(s).