The Golgi apparatus also known as the Golgi complex Golgi body or simply the Golgi is an organelle found in most eukaryotic cells . Part of the endomembrane system in the cytoplasm it packages proteins into membrane-bound vesicles inside the cell before the vesicles are sent to their destination. It resides at the intersection of the secretory lysosomal and endocytic pathways.
Sclerenchyma. Sclerenchyma is a tissue composed of two types of cells sclereids and fibres that have thickened lignified secondary walls: 78 laid down inside of the primary cell wall.The secondary walls harden the cells and make them impermeable to water. Consequently sclereids and fibres are typically dead at functional maturity and the cytoplasm is missing leaving an empty central cavity.
Tue Dec 02 2008 13:30:00 GMT-0500 (Eastern Standard Time) · Mechanosensation is the transduction of mechanical stimuli into neural signals. Mechanosensation provides the basis for the senses of light touch hearing proprioception and pain. Mechanoreceptors found in the skin called cutaneous mechanoreceptors are responsible for the sense of touch. Tiny cells in the inner ear called hair cells are responsible for hearing and balance.
Thu Feb 12 2009 13:30:00 GMT-0500 (Eastern Standard Time) · The epidermal cells of onions provide a protective layer against viruses and fungi that may harm the s…