Science Terminology :: essays research papers

1.Active transport- The movement of a chemical nerve center through a gradient of concentration or electrical strength in the direction opposite to normal dif unification, requiring the expenditure of energy alive(p) transport across a carrell membrane.2. kiosk- The sm every last(predicate)est structural unit of an being that is capable of independent functioning, consisting of one or more nuclei, cytoplasm, and various organelles, all surrounded by a semi permeable cellular telephone membrane.3.Cell membrane- The semi permeable membrane that encloses the cytoplasm of a cell.4.Cell theory- a theory in biology that includes one or both of the statements that the cell is the important structural and functional unit of living matter and that the organism is comprise of autonomous cells with its properties being the sum of those of its cells5.Cell wall- a theory in biology that includes one or both of the statements that the cell is the fundamental structural and functional uni t of living matter and that the organism is comprise of autonomous cells with its properties being the sum of those of its cellsChloroplast- A chlorophyll-containing plastid found in algal and green plant cells.6. Chromatin- A complex of nucleic acids and proteins, primarily histones, in the cell nucleus that stains readily with basic dyes and condenses to form chromosomes during cell division7.Chromosome- A threadlike linear strand of DNA and associated proteins in the nucleus of eucaryotic cells that carries the genes and functions in the transmission of hereditary education. 8.Concentration- The amount of a specified affectionateness in a unit amount of another substance. 9.Cytoplasm- The protoplasm away(p) the nucleus of a cellCytoskeleton- The internal framework of a cell, composed largely of actin filaments and microtubules.10.Diffusion- The spontaneous intermingling of the particles of two or more substances as a result of random thermal motion.DNA- A nucleic acid that c arries the genetic information in the cell and is capable of self-replication and synthesis of RNA. DNA consists of two grand chains of nucleotides twisted into a double helix and joined by hydrogen bonds between the complementary bases adenine and thymine or atomic number 6 and guanine. The sequence of nucleotides determines individual hereditary characteristics.11.Endocytosis - A process of cellular pulmonary tuberculosis by which the plasma membrane folds inward to bring substances into the cell.Endoplasmic reticulum- A membrane network within the cytoplasm of cells involved in the synthesis, modification, and transport of cellular materials.12.Eukaryote- A single-celled or multicellular organism whose cells contain a distinct membrane-bound nucleus.13.Exocytosis - A process of cellular secretion or riddance in which substances contained in vesicles are discharged from the cell by fusion of the vesicular membrane with the outer cell membrane.