Week 1 Class Notes (8-24-15 to 8-28-15)
Week 1 Class Notes (8-24-15 to 8-28-15) BSC2011
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This 2 page Class Notes was uploaded by Amanda Weaver on Sunday August 30, 2015. The Class Notes belongs to BSC2011 at University of Florida taught by Nicole Gerlach in Summer 2015. Since its upload, it has received 86 views. For similar materials see Biology 2 in Biology at University of Florida.
Reviews for Week 1 Class Notes (8-24-15 to 8-28-15)
Killer notes! I'm stoked I can finally just pay attention in class!!!
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Date Created: 08/30/15
BSC2011 Exam 1 Class Notes Week 1 82415 82815 82415 Did not take notes First day of class 82615 Chapter 29 Fundamentals of Animal Function Open Question 0 What do animals need to do to stay alive 0 Energy 0 Feedback 0 Excrete o Reproduce 0 Defense 0 Homeostasis 0 Shelter 0 Water 0 Obtain 02 0 Sleep 0 Growth 0 Compete 0 Animals vary inform but must all take in nutrients and oxygen and eliminate products of metabolism Tissues Organs Organ Systems 0 As organisms become more complex groups of cells specialize into tissues 0 4 major tissue types 0 Epithelial primarily lining parts of the body I skin intestines kidney tubules blood vessels 0 Muscle o Nervous o Connective all types of tissue where cells are surrounded by and extracellular matrix I bones blood fat 0 Know definitions of tissue organ organ system What Do Cells Need 0 Most of all out cells need energy in the form of ATP 0 This equation cellular respiration I Food 02 9 C02 H20 energy hear ATP 0 Metabolic rate rate of energy consumption 0 What factors are going to scale with metabolic rate Heat size 02 consumption Metabolism o BMR how much energy is needed to support basic physiological processes 0 Cell restoration staying alive 0 Measured by 02 consumption when animal is resting in a comfortable thermal environment and has not eaten recently 0 All other calories go towards the Total Metabolic Rate Body Plans Must Conform To Physical Laws 0 Ratio of surface area to volume limits cell size I Volume scales with r3 determines amount of chemical activity in the cell I Surface area scales with r2 determines the amount of materials that cross cell membrane 0 Larger cells require longer for the same amount of 02 to diffuse into the cell I This is why the mouse has a higher metabolism per gram of body weight than an elephant I In addition relative to the amount of heat and surface area the mouse has a higher loss of heat than the mouse Transport Systems 0 In larger animals where each cell cannot reach the environment there must be a highly efficient transport system for nutrients o Ours is primarily blood 0 Insects have different tubes for nutrients and 02 0 Internal uid environment mediates exchange of materials in and our of cells 0 Intracellular uidcompartment 60 of our body s water 0 Extracellular uidcompartment the rest in the form of blood plasma and interstitial uid Regulators and Conformers 0 Internal environment may differ from the external environment in many factors 0 Animals may be I Regulators holds internal environment constant 39 Conformers internal environment matches external environment 0 What are costs and benefits are there for being a regulatorconformer o Regulators use more energy but are more adaptable and can keep optimum values I Homeostasis maintenance of stable internal environment for peak function 0 Conformers must be in a specific environment Control Systems 0 Control systems obtain integrate and process information 0 Set point the optimum value for best function of a characteristic 0 Positive feedback amplify conditions away from the set point 0 The increasing strength of uterine contractions until birth 0 Other examples sexual behavior urinationdefecation 0 Negative feedback brings the current value of the characteristic back to the set point 0 Example thermostat speeding 0 Set points are not static o Circadian rhythms o Shortterm responses 0 Hibernation o Acclimatization 0 Body temperature Friday 82815 Interactive Group Activities with LA Worksheets and answers are posted in Canvas I m not allowed to post copyrighted work onto StudySoup so unfortunately you ll have to check that out
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