Biology Definitions

stallulose A straight chain polymer of glucose molecules secreted by gives and Used as structural supporting material. Cell wall A comparatively rigid structure composed of cellulose that encloses the Cells of jells. The cell wall gives these cells their condition and limits their Expansion in hypotonic media. Chloroplasts A group of structures that has the unsectarian name plastid. Plastids Are membrane-bound organelles found only in plant cells. Usually plastids argon Spherical bodies that float freely in the cytoplasm, holding paint molecules or starch. Chloroplasts contain the green pigment chlorophyl, a substance that gives plants the green color. Chlorophyll is a especial(a) molecule that has the ability to trap light and to convert it to a form of energy that plants can use in carrying start out out of the closet the chemical steps of the food-making process know as Photosynthesis. A double membrane surrounds each chloroplast. at bottom the Chloroplast is nume rous flatten membranous sacs called thylakoids (formerly called grana). The thylakoids are the structures that contain the chlorophyll and it is within these sacs that photosynthesis takes place. Endoplasmic second stomach Spreading throughout the cytoplasm, extending from the Cell membrane to the membranes of the nucleus is a network of membranes that Form channels, tubes, and shape sacs; this network is named the endoplasmic second stomach. One single-valued function of the endoplasmic reticulum is the figurehead of materials throughout the cytoplasm and to the plasma membrane.

The endoplasmic reticulum has o ther great functions related to the synthes! is of materials and their packaging and diffusion to sites needed. Metabolism An comprehensive term concerning all of the biochemical activities carried on by cells, tissues, organs, and systems requisite for the sustaining of life. Metabolic activities in which largish molecules are built from little ones or in which nutrients are changed into living substance are called anabolic activities, or anabolism. Destructive metabolism in which large molecules are degraded for energy or changed into their smaller make blocks is called catabolic activity, or catabolism. ATP (Adenosine triphosphate) The... If you want to hold a full essay, order it on our website: BestEssayCheap.com

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