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Unit 4 Cells To Organism (Eukaryotic & Prokaryotic cells (Euka: Has a…
Unit 4 Cells To Organism
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Nucleus: the central and most important part of an object, movement, or group, forming the basis for its activity and growth.
Vacuole: A space or vesicle within the cytoplasm of a cell, enclosed by a membrane and typically containing fluid
ER: A network of membranous tubules within the cytoplasm of a eukaryotic cell, continuous with the nuclear membrane. It usually has ribosomes attached and is involved in protein and lipid synthesis
Ribosomes: A minute particle of RNA and associated proteins, found in large numbers in the cytoplasm of living cells. They bind to messenger RNA and transfer RNA to synthesize poly particles and protein.
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Chromatin: the material of which the chromosomes of an organism other than bacteria (I.E.., eukaryotes) are composed. It's consists of protein, (RNA and DNA)
meiosis: a type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell, as in the production of gametes and plant spores.
cells consist of a nucleus (which contains genetic material), cytoplasm, and organelles, all of which are surrounded by a cell membrane. Note: Groups of cells with similar structure and function form tissues.
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mitosis: a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.
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meiosis: Somatic cells, or body cells in humans contain 46 chromosomes, or two sets of 23 chromosomes. Gametes, or sex cells contain only one set of chromosomes. In humans, gametes each contain 23 chromosomes. Meiosis is the process of producing gametes. The process occurs in two steps, meiosis I and meiosis II.
Mitosis: a process that takes place in the nucleus of a dividing cell, involves typically a series of steps consisting of prophase, metaphase, anaphase, and telophase, and results in the formation of two new nuclei each having the same number of chromosomes as the parent nucleus — compare meiosis.
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