Bio_1A_Lecture_14_Tissues

Bio_1A_Lecture_14_Tissues - BIOLOGY 1A BIOLOGY 1A-- 3rd...

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Unformatted text preview: BIOLOGY 1A BIOLOGY 1A-- 3rd section. 3rd section. Fall 2007 Fall 2007 Welcome to the Animal Kingdom Welcome to the Animal Kingdom Animal Diversity, Form and Function Animal Diversity, Form and Function Animal Diversity, Form and Function eukaryotic: eukaryotic: Cells with true nuclei. Membrane- enclosed nuclei & membrane-enclosed organelles. multicellular multicellular : : Composed of many cells heterotrophic: heterotrophic: Must take in organic molecules for nutrition. Typically store CH 2 O as glycogen. special structural features: special structural features: Lack cell walls. Unique intercellular junctions. Possess tissues for impulse conduction & locomotion . What is an animal? What is an animal? Early embryonic development in animals Zygote Eight-cell stage Blastula Cross section of blastula Gastrula Gastrulation Endoderm Ectoderm Cleavage The origin of animals - an Hypothesis The origin of animals - an Hypothesis MULTICELLULARITY: Eukaryotic Diversity Animal life began in Precambrian period, 500-600 million years ago...
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This note was uploaded on 10/29/2009 for the course BIO biology taught by Professor Meighan during the Fall '09 term at Berkeley.

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Bio_1A_Lecture_14_Tissues - BIOLOGY 1A BIOLOGY 1A-- 3rd...

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