Treponema and Borrelia
A. are luminescent.
B. are endosymbionts.
C. are spirochaetes.
D. are both easily grown on artificial media.
C
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How would the hydrolysis of phosphodiester bonds impede the origin of life?
A. It would slow the rate of protein synthesis. B. It would prevent the assembly of nucleic acids. C. It would stop the formation of cell membranes. D. It would digest amino acids. 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 the molecular basis of early life-forms? 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?
Which gas is increasing in the atmosphere and threatening the world with the greenhouse effect?
a. carbon dioxide b. carbon monoxide c. ozone d. fluorocarbon e. oxygen
According to the fossil record, which of the following were the first vertebrates to appear on land?
A. reptiles B. mammals C. fish D. birds E. amphibians
Which of the following is NOT used in the
development of science? a. evaluation of data b. personal conviction c. prediction d. systematic observation e. sharing ideas