If a coding sequence in DNA read CAT, what would the anticodon of the associated tRNA read?
A. CAT D. CAU
B. GTA E. GAT
C. GUA
D
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In chordates, the ____ is a digestive system structure just posterior to the mouth
a. pharynx b. neural crest c. oral hood d. notochord e. cranium
Which pest has thrived in urban centers due to their ability to adapt rather quickly?
a. Fruit flies b. Crows c. Mice d. Bacteria e. Rats
What does ribisco do?
a. reduces CO2 to G3P b. regenerates RuBP with the aid of ATP c. combines electrons and H+ to reduce NADP+ to NADPH d. adds CO2 to RuBP in the carbon fixation stage e. transfers electrons from NADPH to 1,3 bisphosphoglycerate to prodcue G3P
A Case Study. The sputum from two patients was being tested for the presence of M. tuberculosis . Patient 1exhibited clinically obvious TB. Patient 2 did not exhibit clinically obvious TB, but had been in contact with patient 1. The process of testing the sputum samples from patients 1 and 2 included the use of a positive control (test sample/culture). M. tuberculosis was isolated from the sputum samples of both patients. DNA fingerprinting revealed that the isolates from patients 1 and 2 were not identical. Which of the following possibilities most likely occurred?
A) Both patients were infected from a common source B) Laboratory error resulted in one patient specimen being contaminated with another patient specimen C) Poor handling of the test culture allowed cross contamination to patient 2