Pnb 2250 exam 2 - Study guides, Class notes & Summaries

PNB 2250 EXAM 2 Questions And Answers With Latest Updates What are examples of thermal adaptation? (adapting to change in temp) (E2) ANS -Expression of alternative protein forms. -The presence of heat exchangers in the legs of ducks -Changes in gene transcription. -Previous exposure to elevated temperature What is not a part of thermal adaptation? (E2) ANS A fever in response to an infection When elephant seals dive to a great depth...(E2) ANS they don't breath (they DO NOT left ...

How is filter feeding an example of ecosystem engineering? - helps clarify oceans Oysters in Chesapeake Bay filter the water Disadvantages to Feeding - must have larger mouth and machinery to breakdown food particles requires time so pathway is longer Where is the fuel from food acquired? - chemical bonds energy was used to make bonds, and will be released when it is broken Homeostasis - maintenance of internal environment Basal Metabolic Rate (BMR) - amount of energy expended when at res...

Animals must provide ____ (4) for food processing -:- .path for intake chemical & mechanical digestion reabsorption of nutrients loss of waste products Where is the fuel from food acquired? -:- chemical bonds energy was used to make bonds, and will be released when it is broken Homeostasis -:- maintenance of internal environment Basal Metabolic Rate (BMR) -:- amount of energy expended when at rest in a neutral environment, with an inactive digestive system 2 | P a g e | G r ...

PNB 2250 Exam 2 Study Questions and Answers | 100% Pass Animals must provide ____ (4) for food processing - Answer-.path for intake chemical & mechanical digestion reabsorption of nutrients loss of waste products Where is the fuel from food acquired? - Answer-chemical bonds energy was used to make bonds, and will be released when it is broken Homeostasis - Answer-maintenance of internal environment Basal Metabolic Rate (BMR) - Answer-amount of energy expended when at rest in a neutral ...

PNB 2250 Exam 1 Questions and Answers |100% Pass What traits to animals share? - Answer-Eukaryotic, heterotrophic, able to move Cell to cell connections in plants - Answer-Plasmodesmo, flow of nutrients between cells Cell to cell connections animals - Answer-Tight junctions, strong connection Some multicellularity advantages - Answer-Cells have dedicated tasks (increase efficiency) Not all genes expressed (saves energy) Cells are further away from surface, ease on homeostasis Disadvant...

PNB 2250 Exam 1 (final exam prep) Study Guide cell to cell connection (in animals vs. plants) - Answer-plants = plasmodesmata, flow of nutrients between cells animals = tight junctions convergent evolution - Answer-organisms independently evolve similar traits as a result of having to adapt to similar environments limited solutions to the same problem analogous structures - Answer-flight in insects, bats, birds fingerprints in humans and koalas echolocation in bats, whales, shrews tru...

PNB 2250 Exam 3 Questions and Answers | 100% Pass Examples of respiratory structures of terrestrial animals - Answer-bulk flow with tracheal system and spiracles (insects), cutaneous (frog) Examples of respiratory structures of aquatic animals - Answer-bulk flow (sponges, cnidarians), gills, water vascular system, arborescent respiratory trees (sea cucumber), cutaneous (leech) Do all aquatic animals necessarily exchange gasses in water? - Answer-No, some aquatic animals could exchange ga...

PNB 2250 EXAM 1 STUDY GUIDE WITH COMPLETE & VERIFIED SOLUTIONS Emergent properties of animal physiology - Answer-- Atoms - Molecules - Cells - Tissues - Organs - Integrated organ systems Physiological tolerances affects the _________ & ___________ of species. Physiology also influences higher levels of biological organization (4 things): - Answer-distribution, abundance -Population -Community -Ecosystem -Biome Evolving specializations is risky because... - Answer-environments can ...

PNB 2250 EXAM 1 QUESTIONS AND ANSWERS | 100% PASS Which statement is true? a. Heme is commonly found within seawater b. Heme-based proteins played a key role in the metabolism of carbon dioxide into forms less toxic to cells. c. Heme-based proteins likely developed as a means by which Fe was transported safely. d. Oxygen binding to heme is insensitive to the presence of acid in mammals. e. Early anaerobic life used heme-based proteins to minimize oxygen toxicity. - Answer-(e) Early ana...

PNB 2250 Exam 3 Uconn Study guide with complete solutions The loss of digestive wastes, CO2 and NH4+ are examples of _______________. - Answer-excretion The regulation of H2O and solutes is via ___________________. - Answer- osmoregulation Water moves from an area of ________ (low, high) osmolarity to an area of __________ (low, high) osmolarity - Answer-low, high ___________: a chemical dissolved in a solvent (H2O is the only solvent we are interested in) [6.02]. ___________s occupy sp...