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TLS Online TPP Program

#Question id: 1109

What role do phosphatases play in signal transduction pathways?

#SCPH01 Biochemistry

  1. They transfer a phosphate group from one protein in the pathway to the next molecule in the series.

  2. They activate protein kinases by phosphorylation.

  3. They amplify the second messenger cAMP.

  4. They inactivate protein kinases to turn off signal transduction.

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TLS Online TPP Program

#Question id: 11074

#SCPH28 | Zoology

A 30-year-old woman performs a valsalva maneuver about 30 min after eating lunch. Which of the following best describes the changes in pulmonary and systemic blood volumes that occur in this woman?
TLS Online TPP Program

#Question id: 10958

#SCPH28 | Zoology

Which of the following would be appropriate therapy for massive pulmonary embolism?
TLS Online TPP Program

#Question id: 2668

#SCPH06 I Botany

The toxic shock syndrome toxin is produced by some Salmonella species when there is not sufficient iron present. When iron is present, it prevents transcription of the TSS-toxin gene. Iron therefore serves as __________.
TLS Online TPP Program

#Question id: 9216

#SCPH06 I Botany

Which of the following criteria have to be met for a species to qualify as invasive?
TLS Online TPP Program

#Question id: 18378

#SCPH28 | Zoology

Biostimulation is a process which involves the modification of the environment to