EBio1220StudyGuideExam2

EBio1220StudyGuideExam2 - 4:16:00 PM Chapter 34-Birds and...

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02/03/2008 17:16:00 Chapter 34—Birds and Mammals  (beginning of Lecture 12)  • Material we didn’t finish covering for the last exam  • What are the major groups?  • What are the major characteristics of each group?  • Primate evolution and the rise of humans (James Loudon material)  Chapter 40—Basic Principles of Animal Form and Function    • Section 40.1—Physical laws and the environment  o How do physical laws constrain animal form?  Physical laws constrain the size and shapes of animal forms o SA to V ratio: how does it work?  It dictates many important properties of animal form and function like  temperature regulation, respiration, circulation, etc. Body surface area increase with square of body length but body mass  increases with the cube of body length When good? When bad? Good when you want to increase exchange surface or obtain or expel something Bad went you want to decrease exchange surface, retain something(heat) • Endothermy vs. ectothermy – know in detail! (Section 40.5)  o What are the advantages of being an ecotherm?  An endotherm?  Advantages of endotherm0endurance, habitat range
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Ecotherm0 • Section 40.4--Know the concepts of homeostasis, negative feedback, positive feedback  • Section 40.5—Thermoregulation  o What is countercurrent exchange?  In what other organ systems do you find it?  Chapter 41—Animal Nutrition    • Section 41.2—What are the essential materials needed by most organisms?  Amino acids, fatty acids, vitamins, minerals o Why do we eat?  Need energy(atp production), biosynthesis(growth, reproduction), and  essential nutrients to survive, grow, and store energy • Nutritional requirements of animals  amino acids o 20 needed to make proteins o 8 are essential and cannot be made from precursors o others can be synthesized from these 8 fatty acids o saturated and unsaturated o saturated fat-contains primarily fatty acids saturated with H. o unsaturated fats-double bonded carbons vitamins o 13 now considered essential
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o needed in low amounts serve as coenzymes(required for proper functioning of enzymes) minerals o inorganic compounds such as calcium, phosporus, iron and  magnesium o can be important enzyme co-factors and normal body  functions9calcium and phosphorus for bones, iron for hemoglobin) o osteophagy-process of eating bones to get calcium o Amino acids, fatty acids, vitamins, minerals  o Don’t worry about memorizing Tables 41.1 and 41.2  o What can go wrong with improper nutrition?  Scury-deficiency in Vitamin C
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This note was uploaded on 05/02/2008 for the course EBIO 1220 taught by Professor Demig-addams during the Spring '07 term at Colorado.

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EBio1220StudyGuideExam2 - 4:16:00 PM Chapter 34-Birds and...

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