The Function of Phosphatases in Signal Transduction Is Best Described

question 63

Multiple Choice

The function of phosphatases in signal transduction is best described as to

• A) move the phosphate group of the transduction pathway to the next molecule of a series.
• B) prevent a protein kinase from being reused when there is another extracellular signal.
• C) amplify the transduction signal so it affects multiple transducers.
• D) amplify the second messengers such as cAMP.
• E) inactivate protein kinases and turn off the signal transduction.

---

Definitions:

Pith

The central core of tissue in the stems of many vascular plants, often used for storage and transport of nutrients.

Photosynthesis

The process by which green plants and certain other organisms transform light energy into chemical energy.

Conduction

The process through which heat or electricity is directly transmitted through a substance when there is a difference of temperature or of electrical potential.

Cork Cambium

A layer of tissue in plants that produces cork cells to form bark and protect the plant.