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Signal transduction occurs when an extracellular signaling molecule activates a cell surface receptor. In words, this receptor change intracellular molecules changes a response. There are two levels in this procedure: the signaling molecule activates a particular receptor protein on the cell membrane. A 2nd messenger transfers the signal into the cell and eliciting a physiological response. In either level the signal can be amplified. Whereas, one signalling molecule can cause several responses. Gene activations and metabolism alterations are instances of cellular responses to extracellular stimulation which requires signal transduction.
How does the structure of a chloroplast enable it to build up a concentration gradient of protons? Chloroplasts have an inner membrane system having of thylakoids. The pumpin
Common Features of Eye and Limb Development A comparison of the embryonic development of the very much different organs, the eyes and the limb, points to various interesting
Osmosis and transpiration both play a part in the movement of water through a plant. Which of these two processes makes the greater contribution to the movement of water up the t
Clinical symptoms of HIV Generally, a person infected with HIV does not show any apparent symptoms for a number (3 to 12) of years. Ten to fifteen percent infected people may,
General characteristics of phylum
what is the opposite of yield? A.grow B.attack C.ask D.answer
Explain Other lipids in biological compound? Other Lipids : Another important type of lipids are the steroids, with a basic structure consisting of four interconnecting carb
Q. Show technical aspects of the postero-anterior film? 1) Identification: Patient identification and side marker must be present. 2) Centering: The thoracic spinous pro
Which pair of glands is affected by the hormones from the posterior pituitary? A) thyroid, ovaries B) adrenal cortex, liver C) testes, mammary glands D) kidneys, uterus
Q. What is the difference between translation and transcription? Transcription is the name given to the formation of DNA molecules from an open DNA chain used as a template, Tr
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