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Chapter 1 Introduction to Biology Lecture

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Subject: 
Biology
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Tags: 
Biology
microbiology
Tree of life
Evolutionary biology
Cell Biology
organism
bacteria
Eukaryote
organelle
Species
Multicellular organism
Protist

Introduction: Exploring Life Chapter 1 Definition of Biology The study of life Characteristics of Living Organisms Living organisms are organized. Atom: the smallest unit of matter that still retains the properties of an element Molecule: two or more chemically bound elements Characteristics of Living Organisms Living organisms are organized Cell: the basic living unit of structure and function Eukaryotic cell Possesses a membrane-bound nucleus and membrane-bound organelles Ex. protists, fungi, plants, and animals Prokaryotic cell Does not possess a membrane-bound nucleus or membrane-bound organelles Ex. bacteria Characteristics of Living Organisms Living organisms are organized Tissue: a collection of like cells

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