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Straighterline Introduction to Biology 101 Chapter 3. New updates
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  • Straighterline Introduction To Biology 101

▪ Cell - -smallest unit of life ▪ Atom - -smallest unit of an element ▪ Molecule - -union of two or more atoms ▪ Tissue - -group of cells with a common structure and function ▪ Organ - -composed of tissue functioning together for a specific task ▪ Organ system - -composed of s...

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  • August 14, 2024
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  • 2024/2025
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Straighterline Introduction to Biology 101 Chapter
3. New updates

▪ Cell - -✓smallest unit of life



▪ Atom - -✓smallest unit of an element



▪ Molecule - -✓union of two or more atoms



▪ Tissue - -✓group of cells with a common structure and function



▪ Organ - -✓composed of tissue functioning together for a specific task



▪ Organ system - -✓composed of several organs working together



▪ Organism - -✓an individual



▪ Population - -✓organisms of the same species in a particular area



▪ Community - -✓interacting populations in a particular area



▪ Ecosystem - -✓a community plus the physical environment



▪ Biosphere - -✓regions of the Earth's crust, waters, and atmosphere inhabited by living organisms



▪ Energy - -✓the capacity to do work

, ▪ Metabolism - -✓all of the chemical reactions that occur in a cell



▪ Sun - -✓ultimate source of energy for nearly all life on Earth



▪ Photosynthesis - -✓process that transforms solar energy into the chemical energy of organic
nutrient molecules



▪ Reproduction - -✓to make another organism like itself



▪ Genes - -✓genetic instructions



▪ DNA - -✓deoxyribonucleic acid - provides instructions for organization and metabolism



▪ Mutations - -✓Inheritable changes in the genetic information
▪ Provides important source of variation



▪ Behavior - -✓movement of an organism - self directed or responding to stimulus - largely
directed toward minimizing injury, acquiring food, reproducing



▪ Cell Wall (composition) - -✓contains polysaccharides



▪ Cell Wall (function) - -✓Support and protection



▪ Plasma Membrane (composition) - -✓phospholipid bilayer with embedded proteins



▪ Plasma Membrane (function) - -✓defines cell boundary; regulates molecule passage into and out
of cells



▪ Nucleus (composition) - -✓nuclear envelope, nucleoplasm, chromatin, and nucleoli

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