BIO 203 Lecture Notes - Lecture 8: Motor Protein, Substance P, Nitric Oxide
16 Nov 2016
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Document Summary
Cells need to translate an external signal into an internal change. Cells can use electrical or chemical signals to relay messages, sometimes over long distances. Similar messages used in all forms of multicellular life. Diagram and describe major signaling pathway cells use to transduce external signals into internal changes. Compare and contrast electrical and chemical signaling mechanism, both within a single cell and between cells. Explain how positive and negative feedback mechanisms are used to regulate hormonal signaling pathways, and how nd messengers and amplifying enzymes provide positive feedback in cell signaling. Predict the outcome of perturbations in cell signaling pathways, synaptic transmission mechanisms and endocrine signaling pathways, and explain the signs and symptoms associated with some common perturbations seen in endocrine diseases. You sense some delicious food on the far side of your petri dish. Cellular processes can change in response to both chemical and electrical signaling.
