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Symbiogenesis (endosymbiotic theory, or serial endosymbiotic theory[2]) is the leading evolutionary theory of the origin of eukaryotic cells from prokaryotic organisms. [3] The theory holds that mitochondria, plastids such as chloroplasts, and possibly other organelles of eukaryotic cells are descended from formerly free-living prokaryotes ...
Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations. Charles Darwin popularised the term "natural selection", contrasting it with artificial selection, which is ...
Biology: The Unity and Diversity of Life is an introductory textbook of biology, for students. [ further explanation needed ] The fifteenth edition was published in 2019, by Cengage Learning . It was compiled by Cecie Starr and Ralph Taggart with pictures and illustrations by Lisa Starr.
Science is a systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the world. [1] [2] Modern science is typically divided into two or three major branches: [3] the natural sciences (e.g., physics, chemistry, and biology), which study the physical world; and the behavioural sciences (e.g., economics, psychology, and sociology), which ...
The cell cycle in eukaryotes: I = Interphase, M = Mitosis, G 0 = Gap 0, G 1 = Gap 1, G 2 = Gap 2, S = Synthesis, G 3 = Gap 3. Cell division is the process by which a parent cell divides into two daughter cells. [1] Cell division usually occurs as part of a larger cell cycle in which the cell grows and replicates its chromosome (s) before dividing.
Along with American biologist Neil Campbell, she wrote the widely used Campbell/Reece Biology textbooks. [1] Reece received an A.B. in Biology from Harvard University, an M.S. in microbiology from Rutgers University, and a Ph.D. in bacteriology from the University of California, Berkeley. Her doctoral thesis was entitled 'The RecE pathway of ...
San Bernardino Valley College. Neil Allison Campbell (April 17, 1946 – October 21, 2004) was an American scientist known best for his textbook, Biology, first published in 1987 and repeatedly through many subsequent editions. The title is popular worldwide and has been used by over 700,000 students in both high school and college -level classes.
Basic cellular compartments. Cellular compartments in cell biology comprise all of the closed parts within the cytosol of a eukaryotic cell, usually surrounded by a single or double lipid layer membrane. These compartments are often, but not always, defined as membrane-bound organelles. The formation of cellular compartments is called ...