BIO 370 Quiz 2 Questions Answered Correctly Latest Update

BIO 370 Quiz 2 Questions Answered Correctly Latest Update 2 types of thermal classification of animals - Answers - based on their source of body heat - based on the nature of their body temperatures (Tb) relative to the environment (Te) Ectotherms - Answers Obtain heat from the external environment (Poikilotherm equivalent) Endotherms - Answers Produce heat metabolically or actively radiate heat (Homeotherm equivalent) Heterotherms - Answers Both ectotherm/endotherm and hemeotherm/poikilotherm Poikilotherms - Answers Have variable internal Tb that fall within a wide range of Te; also wide homeostatic range for Tb Homeotherms - Answers Maintain constant Tb with narrow homeostatic range for Tb Major differences between ectotherms and endotherms - Answers - Resting MR - Total energy expenditure at rest - Response to changes in environmental temperatures Body temp of endotherms - Answers Increases its MR to maintain its body temperature in cold conditions Behavioral Thermoregulation - Answers When animals use behavior to influence body temperature and MR What type of organisms conduct behavioral thermoregulation - Answers - Endotherms - Ectotherms - Heterotherms When is mass-specific metabolic rate the highest? - Answers Small endotherms Unscaled metabolic rate ___________ with body size - Answers increases Electrochemical equlibrium is influenced by - Answers - Degree of membrane permeability to ions and water - Membrane impermeability to large charged molecules (ex: anions such as proteins) Osmosis - Answers The movement of water through a semipermeable membrane from a less concentrated to a more concentrated solution Osmotic pressure - Answers A force that draws water Donnan Equilibrium - Answers [ion1]inside * [ion2]inside = [ion1]outsdie *[ion2]outside Types of membrane channels - Answers - Leaky: always open - Gated: open only under specific conditions Types of gated channels - Answers - Voltage-gated channel