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Homeostasis – process by which an organisms
Homeostasis – process by which an organisms

...  Proteins pump molecules through membrane.  Molecules move ______________________________ diffusion (from low to high concentration) OTHER WAYS CELLS GET MATERIALS...  Vesicles – a membrane-bound sac that is used to transport materials inside of a cell  Endocytosis - plasma membrane ____________ ...
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Keystone Biology Practice Questions copy.pages

... B. Translocation can cause duplication of certain sections of chromosomes.! C. Translocation can cause the exchange of genetic material between homologous! chromosomes.! D. Translocation can result in the failure of homologous chromosomes to separate during! meiosis.! 38. Scientists have been able t ...
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Keystone Biology MC Review Questions 1. The diagram below

... A. Both cell types carry out transcription in the nucleus. B. Both cell types use ribosomes to carry out translation. C. Both cell types assemble amino acids to carry out transcription. D. Both cell types carry out translation in the endoplasmic reticulum. 26. The endoplasmic reticulum is a network ...
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Answers to Biology Unit Handout

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Central Nervous System (CNS): the body`s main control center and

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Cells_and_Chemical_Changes_Background_Info_

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class_objective_2 student

... • ______________ movement from an area of high concentration to an area of low concentration is diffusion. • The diffusion of water is called ____________. ...
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Cell (biology)



The cell (from Latin cella, meaning ""small room"") is the basic structural, functional, and biological unit of all known living organisms. Cells are the smallest unit of life that can replicate independently, and are often called the ""building blocks of life"". The study of cells is called cell biology.Cells consist of cytoplasm enclosed within a membrane, which contains many biomolecules such as proteins and nucleic acids. Organisms can be classified as unicellular (consisting of a single cell; including bacteria) or multicellular (including plants and animals). While the number of cells in plants and animals varies from species to species, humans contain more than 10 trillion (1013) cells. Most plant and animal cells are visible only under the microscope, with dimensions between 1 and 100 micrometres.The cell was discovered by Robert Hooke in 1665, who named the biological unit for its resemblance to cells inhabited by Christian monks in a monastery. Cell theory, first developed in 1839 by Matthias Jakob Schleiden and Theodor Schwann, states that all organisms are composed of one or more cells, that cells are the fundamental unit of structure and function in all living organisms, that all cells come from preexisting cells, and that all cells contain the hereditary information necessary for regulating cell functions and for transmitting information to the next generation of cells. Cells emerged on Earth at least 3.5 billion years ago.
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