Biol outline chap 1 (01)

Biol outline chap 1 (01) - CHAPTER 1: An Introduction to...

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CHAPTER 1: An Introduction to Life On Earth
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Defining Life Dictionary definition of life is: The quality that distinguishes a vital and funcyioning being from a dead body living thing are more than the sum of ther parts> life is difficult to define certain characters
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Characteristics defining LIFE 1. Struture is complex 2. Acuire materials and energy from the environment 3. maintain internal conditions 4. growth 5. respond to stimuli 6. Reproduce 7. Capacity to evolve
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Living Things Are Both Complex and Organized Salt: organized but simple (nonliving)
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Living Things Are Both Complex and Organized Oceans: complex but unorganized (nonliving)
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Living Things Are Both Organized and Complex Water flea: complex and organized (living)
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Each level of complexity or structure is based on the one below it levels of biological organization, in order of least to most complex illustrated in fig 1-1 Living Things Are Both Organized and Complex
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Least complex Most complex 0 Biosphere Ecosystem Community Multicellular Organism Organ System Organ Tissue Cell Organelle Molecule Subatomic Particle Atom That part of Earth inhabited by living organisms; includes both the living and nonliving components A structure usually composed of several tissue types that form a functional unit A community together with its nonliving surroundings Two or more populations of different species living and interacting in the same area An individual living thing composed of many cells Two or more organs working together in the execution of a specific bodily function A group of similar cells that perform a specific function The smallest unit of life A structure within a cell that performs a specific function A combination of atoms The smallest particle of an element that retains the properties of that element Particles that make up an atom carbon nitrogen oxygen hydrogen proton neutron electron DNA glucose water mitochondrion nucleus chloroplast nerve cell nervous tissue the brain the nervous system Earth's surface snake, antelope, hawk, bushes, grass, rocks, stream snake, antelope, hawk, bushes, grass herd of pronghorn antelope pronghorn antelope Population Members of one species inhabiting the same area Species Very similar, potentially interbreeding organisms LEVELS OF BIOLOGICAL ORGANIZATION
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Biol outline chap 1 (01) - CHAPTER 1: An Introduction to...

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