CharacteristicsofLivingThingsCornellNotesTeacher.pdf -...

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Characteristics of Living Things Made of Cells Cytology is The study of cells A cell is the smallest unit of an organism that can perform life functions Unicellular Composed of only 1 cell Multicellular Composed of many highly differentiated cells How many cells are in an average adult body? 100 Trillion
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Reproduction Sexual reproduction: reproduction involving the union or fusion of a male and a female gamete. The offspring is genetically different from the parents. Asexual reproduction : a type of reproduction where an organism replicates itself, by budding or dividing, without the involvement of other organisms. The offspring is genetically identical to the parent. Why does a female fish lay thousands of eggs to guarantee reproduction while a bear gives birth to one or two cubs to accomplish the same thing? fish are called r strategists (lowercase ‘r’) – they make lots of babies in the hopes that a few will survive to exploit available resources.
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  • Fall '17
  • Biology, Cytology, complex molecules, Organ system group, Cell Basic unit

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