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bio lecture 11 - BIO 311D LECTURE 11 Click to edit Master...

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Click to edit Master subtitle style BIO 311D LECTURE 11 Form and function (in animals)
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The definition of an animal 1. Multicellular, heterotrophic eukaryotes 2. No cell walls – structural proteins are used for support 3. Nervous tissue and muscle tissue 4. Sexual reproduction (usually) 5. Homeoboxes are located in homeotic genes – Hox genes
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Basics Tissues Metabolism Thermoregulation Homeostasis
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Surface area to volume!
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Environmental constraints on animal form:
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Animal tissues Epithelial Connective Nervous Muscle Review – Chapter 7, Fig. 7.7 and 7.17
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Epithelial tissues
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Connective tissues
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Muscle tissue
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Nervous tissue
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Bioenergetics
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Metabolic rate “The sum of all the energy-requiring biochemical reactions occurring over a given time interval.” Measured by: rate of heat loss production of carbon dioxide / amount of oxygen consumed rate of food consumed (known energy content)
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Endothermy vs. Exothermy Heat generated by metabolism Body temp. must be maintained to sustain life Lots of energy required
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