Thursday, November 6, 2008

cells and function- plant cell

























Plant cell: the cell is a highly complex system that is the site of intense energy exchange and which presents vast interphase surfaces. Like all living organisms, it feeds itself, grows, multiplies and dies.

Plasmodesma: intercellular bridge.

Dictyosome: cellular organelle that elaborates sugars and proteins.

Chromatin: a colouring substance in the nucleus of the cell.Nucleus: small spherical body with the cell nucleus.

Nuclear envelope: membrane surrounding the nucleolus.Endoplasmic reticulum: a formation within the cytoplasm that plays a role in the production of various substances.Peroxisome: cytoplasmic organelle which contains enzymes.Chloroplast: granule of chlorophyll, which is needed for photosynthesis.

Mitochondria: granule that plays an important role in the respiration and energy-releasing reactions in living cells.

Cytosol: liquid part of the cytoplasm.

Free ribosome: cytoplasmic organelle which is responsible for protein synthesis.

Tonoplast: vacuolar membrane.Vacuole: space with the cytoplasm of a cell containing various substances.

Cell wall: cell wall.

Plasma membrane: envelope of plasma.

Thylakoids: membranous molecular structures involved in photosynthesis.

Starch grain: starch granule.

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