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Cell signaling in plant and animal cells is similar in some ways and different in others. What are some examples of this?
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- What is the main benefit of cell signaling via direct physical contact and cell signaling over short distances (ex: nerve cell signaling)?What common features are shared by most cell signaling systems?What is the main benefit of cell signaling over long distances (ex: signaling via hormone secretion into the bloodstream)?
- Cell signaling in plant and animal cells is similar in those ways and different in others. Offer one or more hypotheses for these similarities and differences, and cite specific examples.Cell signaling in plant and animal cells is similar in some ways and different in others. Offer one or more hypotheses for these similarities and differences,and cite specific examples.How do signaling proteins form specific complexes? Provide examples.
- What are the functions of Cell signaling proteins?The G protein coupled receptor (GPCR) pathway elicits diverse intracellular responses in different cells. The basic steps of GPCR signaling are outlined in this diagram. Which of the following statements correctly describes the process of GPCR signaling? The GPCR activation is reversible after the signal of the ligand diminishes. The membrane-embedded enzyme uses GTP as a secondary messenger to initiate gene expression. The ligand attaches to both the GPCR and the membrane-embedded enzyme to activate the GPCR pathway. The ligand-bound GPCR sends a GTP molecule to an enzyme in the membrane and switches it into an active state.Name and define (briefly) the four different types of receptors involved in Cellsignaling. Give an example of a ligand and specific type of receptor (where would you find the receptor?) for one of the receptors defined.