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TLS Online TPP Program

#Question id: 626

A metabolic pathway proceeds according to the scheme, R -> S -> T -> U -> V -> W.  A regulatory enzyme, X, catalyzes the first reaction in the pathway.  Which of the following is most likely correct for this pathway?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. Either metabolite U or V is likely to be a positive modulator, increasing the activity of X.

  2. The first product S, is probably the primary negative modulator of X, leading to feedback inhibition.

  3. The last product, W, is likely to be a negative modulator of X, leading to feedback inhibition.

  4. The last product, W, is likely to be a positive modulator, increasing the activity of X.

More Questions
TLS Online TPP Program

#Question id: 11240

#Unit 9. Diversity of Life Forms

 Which of the following requires ATP to function, and permits some species to respond to taxes (plural of taxis)?
TLS Online TPP Program

#Question id: 3701

#Unit 3. Fundamental Processes

Frederick Griffith accidentally discovered transformation when attempting to develop a vaccine for pneumonia. He injected mice with samples from S-strain (virulent) and/or R-strain (nonvirulent) pneumococci bacteria (Streptococcus pneumoniae). Which of the following results is NOT consistent with Griffith's experiments?
TLS Online TPP Program

#Question id: 16476

#Unit 12. Applied Biology

Which type of cultures can be used for cells which do not have cell to cell communication
TLS Online TPP Program

#Question id: 7701

#Unit 9. Diversity of Life Forms

The various taxonomic levels (for example, phyla, genera, classes) of the hierarchical classification system differ from each other on the basis of ________
TLS Online TPP Program

#Question id: 4369

#Unit 3. Fundamental Processes

Which of the following is an incorrect association between transcription factors and their characteristics?