When an aminoacyl-tRNA synthetase charges a tRNA, which molecule is released?
A. AMP
B. AMP and pyrophosphate
C. mRNA
D. pyrophosphate
E. ATP
Answer: B
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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 methods will move carbon dioxide into the atmosphere?
a. Aerobic respiration and burning of fossil fuels b. Burning of fossil fuels and sedimentation c. Sedimentation and photosynthesis d. Decomposition and diffusion e. Aerobic respiration and sedimentation
Asexually produced daughter cells are
A) identical to each other. B) different from each other. C) identical to the parental cell. D) different from parental cell. E) identical to each other and to the parental cell.
Converting a prairie to a farm field is an example of ________.
a) overharvesting b) habitat loss c) exotic species d) climate change