Cell Communication Essay

The orderly development of an organism depends on a process called cell determination, in which initially identical cells become committed to different pathways of development.A fundamental part of cell determination is the ability of cells to detect different chemicals within different regions of the embryo.

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Second Messengers and Protein Phosphorylation (kinases and phosphatases). Inositol lipids in signal transduction: Regulation of phospholipase C. IP3) and diacylglycerol (DAG) in regulation of Ca -dependent kinases. Enzyme Linked Receptors: Receptor tyrosine kinases (RTKs), e.g.

Cyclic Nucleotide-Dependent Systems: G proteins in regulation of adenylyl cyclase-c AMP-protein kinase A (PKA) and guanylyl cyclase-c GMP pathways. epidermal growth factor receptor (EGF) family and insulin receptor, and their varied roles in cellular metabolism, cell behaviour, development and disease.

In this process, known as cell determination, cells are individually programmed to direct them toward development into different cell types.

A fertilized egg multiplies and produces a whole family of daughter cells, each of which adopts a structure and function according to its position in the entire assembly.

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metre) in thickness, surrounds every living cell, delimiting the cell from the environment around it.

Enclosed by this cell membrane (also known as the plasma membrane) are the cell’s constituents, often large, water-soluble, highly charged molecules such as proteins, nucleic acids, carbohydrates, and substances involved in cellular metabolism.

Formation of a multicellular organism starts with a small collection of similar cells in an embryo and proceeds by continuous cell division and specialization to produce an entire community of cooperating cells, each with its own role in the life of the organism.

Through cell cooperation, the organism becomes much more than the sum of its component parts.

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