Select the amino acid that has been activated by aminoacyl-tRNA synthetase
A. Amino acid • ATP • aminoacyl-tRNA synthetase
B. Amino acid • aminoacyl-tRNA synthetase
C. Amino acid + AMP + PPi
D. Amino acid • AMP
D
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Specimens for microbiologic studies should be:
a. transported to the laboratory within 48 hours of collection. b. collected in nonsterile specimen contain-ers. c. transported in sealable, leak-proof plastic bags with a separate section for paper-work. d. sent to the laboratory on ice, no matter what type of specimen.
An adenovirus
a. is a naked virus. b. does not have a lipid envelope. c. has a spiked protein coat. d. infects animals. e. all of these.
Organisms with a slow development and a high investment in their young will most likely have a _____ survivorship curve
a) type I b) type I-type II hybrid c) type II d) type II-type III hybrid e) type III
Which of the following statements does not belongs in the Introduction of a scientific paper?
A. The migratory movements of the birds depended on many factors B. To collect the samples, the animals were carefully removed from the inside of the plants C. The aerobic exercise is very important and creates deep changes in heart conditions D. Connective tissue is one of the four basic types of tissue E. The behavior doesn't depend on the climate conditions and seems to be more guided by Earth magnetism