PHYS 104 Lecture 1 Outline of Last Lecture I. Gradinga. Warm Ups 5%b. Learning Catalytics 5%c. Homework 10%d. 3 Midterms 30%e. Final 25%f. Studio 25%II. Biology and Physicsa. Why is physics important?b. How is physics used in biology?Outline of Current Lecture III. Guest Lecturera. ScalingIV. Metabolic Rate vs. Body Sizea. Surface Area of animalsV. Scalinga. Volumeb. Surface Areac. Clicker QuestionsCurrent Lecture- Guest Lecturero Scaling, according the physiological definition, is the structural and functional consequence of change in size or in scale among similarly organized animals.o Bones of larger animals are disproportionate to smaller animals.o Metabolism is the overall use of chemical energy.o The rate of oxygen consumption is a good measure of energy use.- Metabolic Rate vs. Body Sizeo Rubner suggested that larger animals have a smaller surface area than small animals. o He suggested that small animals have a higher metabolic rate to prevent heat loss.These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.o Rubner’s Surface Rule Does not compensate for cold blood animals Slope would be -.33 if the metabolic rate was proportional to surface area.o If large and small animals exchanged metabolic rates… Large animals with boiling temperature skin. Small animals with >15 inches of fur.- Scalingo Blowfish Volume is 4/3 pi r^3 Surface area is 4 pi r^2o Clicker Question How does the mass change when a blowfish doubles in size? The density of a blowfish stays the same. Density is a function of mass and volume. Rho = m/V Mass changes by a factor equal to
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