Biology Chapter 1

Biology Chapter 1 - - have single stranded DNA Eukaryotes:...

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Biology Chapter 1: the scientific study of life 22/08/2007 11:19:00 Objectives: Characteristics of living things Scientific method Biology: study of life Characteristics: - order - reproduction - grow and develop - energy use (metabolism) - response to external environment stimuli - ability to adapt - homeostasis: maintains living systems in an acceptable range cell: most basic structure in living organisms, capable of carrying out all of the  activities fundamental to life - cell is the structural and functional unit of life - Robert Hooke, first described and named cells in 1665 - two main types of cells: prokaryotes and eukaryotes Prokaryates: - bacteria - lack many of the organelles of eukaryates
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- smaller - many have cell walls
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Unformatted text preview: - have single stranded DNA Eukaryotes: - plants, animals, fungi, protista - membrane bound well defined nucleus - complex organelles - cell wall only in plants - double stranded DNA Cells are organized in tissues, organs, organ systems, individuals. Page 7: Biologists classify organisms into groups with similar characteristics to understand the diversity of life - classification of organisms: taxonomy - the system progresses from the most general to the most specific page 8: the system: kingdom, phylum, class, order, family, genus, species most inclusive: kingdom or domain least inclusive: species 22/08/2007 11:19:00 22/08/2007 11:19:00...
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Biology Chapter 1 - - have single stranded DNA Eukaryotes:...

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