AP Biology Pre-Discussion Questions: Physiology 5- Regulation
Instructions:
TopicPresentation:
SupplementaryResources:
VideosbyPaulAnderson
Part 1: Thermoregulation
Questionstoanswer:
Thingsyoushouldmakesureyouunderstand:
Part 2: Osmoregulation
Questionstoanswer:
Thingsyoushouldmakesureyouunderstand:
Instructions:
●Open the presentation.
●Watch the embedded video clips and move through the embedded content.
●Answer the “Questions to answer”.
●Make sure you understand the “Things you should make sure you understand”.
●Feel free to view the “Supplementary Resources”.
●Write down any questions that you have about the material.
Topic Presentation:
clickhere
Note: This is a 2-part topic.
Supplementary Resources:
Videos by Paul Anderson
“Thermoregulation”
“Osmoregulation”
“OrganSystems”
“HomeostasisHugs”
Part 1: Thermoregulation
Questions to answer:
1.Explain the major differences between ectothermic and endothermic animals.
2.What are the sources of heat in an organism?
3.How is heat exchange controlled between an organism and its environment?
4.Compare how metabolism is measured in ectotherms and endotherms.
5.Why do smaller endotherms require more energy per unit of mass than larger endotherms?
6.Compare the advantages and disadvantages of endotherms and ectotherms.
Things you should make sure you understand:
(feel free to ask questions about them in class)
●The utility of the heat exchange adaptations shown in the presentation.
Part 2: Osmoregulation
Questions to answer:
1.Explain the difference between being a “conformer” and a “regulator”.
2.Why does an animal need to eliminate nitrogenous waste?
3.What is the advantage in animals coupling nitrogenous waste excretion to osmolarity regulation?
4.What considerations determine if an animal excretes nitrogenous waste as ammonia, uric acid, or urea?
5.Diagram a nephron. Label the important anatomy and explain where the major phases of excretion (filtration, reabsorption, secretion and excretion) occur. Give examples of molecules that move either to the nephron or to the circulatory system in each of the first three phases.
6.Why is reabsorption of molecules from the filtrate required?
Things you should make sure you understand:
(feel free to ask questions about them in class)
●The evolutionary trends seen in osmoregulation and excretory systems in animal lineages.
●The advantages and disadvantages of animals using particular compounds as their nitrogenous waste excretion molecule.
●The structure and function of all parts of the mammalian excretory system.
●The ADH and RAAS excretory control systems.