Titlebook: Biochemical Messengers; Hormones, neurotrans D. G. Hardie Book 1991 Springer Science+Business Media Dordrecht 1991

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John Drew,Blair McCallum,Stefan Roggenhofereir rate of cell growth and division. Growth of unicellular organisms is usually limited by the availability of nutrients, and in rich medium they divide exponentially. By contrast, cells in a multicellular organism are normally bathed continually in a nutrient-rich medium (the extracellular fluid),

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https://doi.org/10.1007/978-1-4039-4841-0ntracellular receptors, rather than receptors expressed at the cell surface. All of these three classes of messenger are small lipophilic compounds, and they readily permeate the plasma membrane. An additional difference from other first messengers is that the primary action of these types is to reg

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Journey to Ethnographic ResearchThe signal transduction mechanisms discussed in Chapter 7 result in the generation of three types of signal within the cell (Figure 8.1):

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Journey to Diverse Microbial Worldscell, it is necessary to understand how cells maintain a constant ionic composition (.) in the absence of stimulation. In this chapter we will also consider the special ionic properties of excitable cells, including nerve cells, that allow them to transmit information along their surfaces in the form of electrical impulses.