TLS Online TPP Program
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TLS Online TPP Program
#Question id: 2664
#Unit 2. Cellular Organization
Which of the following is an example of positive gene regulation?
TLS Online TPP Program
#Question id: 31039
#Unit 4. Cell Communication and Cell Signaling
Phosphorylation of tyrosine in activation loop leads to a conformational change in the activation loop that unblocks the kinase active site for either ATP or the substrate by:
Reducing the Kd
Increasing the Kd
Reducing the affinity
Increasing the affinity
Which of the following combination is correct?
TLS Online TPP Program
#Question id: 33362
#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 have changed pI as compared to HbA
TLS Online TPP Program
#Question id: 2675
#Unit 2. Cellular Organization
Which of the following statements regarding the trp operon is true?
TLS Online TPP Program
#Question id: 833
#Unit 1. Molecules and their Interaction Relevant to Biology
Eubacteria Also Contain Self-Compartmentalized Proteases similar to proteosome in E.coli such as