In plant cells,

Golgi apparatus serves as the site at which the complex polysaccharides of the cell wall (pectin & hemicellulose) are synthesized.

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#Unit 7. System Physiology – Animal

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#Unit 7. System Physiology – Animal

Insulin secretion by the pancreatic beta cells in response to increased blood glucose concentration

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#Unit 7. System Physiology – Animal

The beta cells have a large number of glucose transporters that permit a rate of glucose influx that is proportional to the blood concentration in the physiological range

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#Unit 7. System Physiology – Animal

The entry of glucose into pancreatic β cells is mediated by the GLUT2 glucose transporter Because the Km for glucose of GLUT2 is 20 mM, a rise in extracellular glucose from 5 mM, causes a proportional increase in the rate of glucose entry

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#Unit 7. System Physiology – Animal

The conversion of glucose into pyruvate is accelerated, resulting in an increase in the concentration of ATP in the cytosol

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#Unit 7. System Physiology – Animal

The binding of ATP to  ATP sensitive K+ channels in the β cells closes the channels, reducing the efflux of K+ ions from the cell. The resulting small depolarization of the plasma membrane