What is the American Psychological Association’s Ethical Principle of Psychologists and Code of Conduct based upon? A. The work of a dozen world-renowned philosophers and ethical savants. B. The feedback of thousands of psychologists and their ethical struggles. C. The regulatory power and authority of the United States Constitution. D. The Hippocratic rules and guidelines of medical practitioners and surgeons. Please select the best answer from the choices provided A B C D.

Some viruses can be crystallized and their structures analyzed. one such virus is yellow mottle virus, which infects beans. this virus has a single-stranded rna genome containing about 6300 nucleotides. its capsid is 25-30 nm in diameter and contains 180 identical capsomeres.if the yellow mottle virus begins its infection of a cell by using its genome as mrna, which of the following would you expect to be able to measure? a) replication rateb) transcription ratec) translation rated) formation of new transcription factors