The enzyme that attaches an amino acid to a tRNA (aminoacyl-tRNA synthetase):

TLS Online TPP Program

#Question id: 33361

#Unit 1. Molecules and their Interaction Relevant to Biology

a. Hb Cowtown: eliminates an ion pair involved in T-state stabilization

b. Hb Milwaukee: substitutes a Glu for a Val

c. Hb Providence: substitutes an Asn for a Lys that normally projects into the central cavity of the tetramer

d. Hb Philly: substitutes a Phe for a Tyr,

Which Hb variant will not bind to BPG

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#Question id: 8718

#Unit 9. Diversity of Life Forms

Which of the following would, if it had acted upon a gene, prevent this gene from acting as a reliable molecular clock?

TLS Online TPP Program

#Question id: 28056

#Unit 1. Molecules and their Interaction Relevant to Biology

The fact that the core of most globular proteins is composed of non-polar residues is because of

TLS Online TPP Program

#Question id: 10816

#Unit 10. Ecological Principles

When a harmless species takes advantage by resembling the aposematic coloration of other species that are toxic, it is called _____________________.

TLS Online TPP Program

#Question id: 11088

#Unit 7. System Physiology – Animal

At a fraternity party a 17-year-old male places a paper bag over his mouth and breathes in and out of the bag. As he continues to breathe into this bag, his rate of breathing continues to increase. Which of the following is responsible for the increased ventilation?