Pnb 2250 exam - Study guides, Class notes & Summaries

PNB 2250 Exam 3 Questions And Answers With Verified Study Tests Examples of respiratory structures of terrestrial animals ANS bulk flow with tracheal system and spiracles (insects), cutaneous (frog) Examples of respiratory structures of aquatic animals ANS bulk flow (sponges, cnidarians), gills, water vascular system, arborescent respiratory trees (sea cucumber), cutaneous (leech) Do all aquatic animals necessarily exchange gasses in water? ANS No, some aquatic animals could exchange g...

PNB 2250 EXAM 3 Questions And Answers With 2024/2025 Updates The presence of poly-unsaturated fatty acids in the cell membrane is decreased in larger animals with lower mass-specific metabolic rates(E3) A. true B. false C. this is dependent on animal shape D. This is only true for swimming animals E. this is only true for flying animals ANS A. true A size selective (but not solute selective) nephron filtration barrier ...(E3) A. is very uncommon in vertebrates B. is not found in ...

PNB 2250 Exam 3 Complete Questions And Answers With Latest Quiz Of the following, which is NOT a strategy by which endotherms generate internal heat: ANS Panting The minimal metabolic activity required to maintain bodily functions in a mammal is known as the ANS basal metabolic rate. Which of the following thermoregulatory mechanisms can be used to restrict blood flow to the skin, and thus decreases heat loss by keeping the warmed blood closer to the core of the body? ANS vasoconstrict...

PNB 2250 Exam 4 UCONN Questions And Answers With Latest Set

PNB 2250 EXAM 1-4 Final Review Questions And Answers With Latest Updates

PNB 2250 Exam Verified Study Questions And Answers A fish in freshwater....(E3) A. rapidly loses water through the gills B. loses solutes through the gills C. must be an Osmo conformer D. actively pumps solutes out of its body through the gills E. must produce a very concentrated urine ANS D The presence of poly-unsaturated fatty acids in the cell membrane is decreased in larger animals with lower mass-specific metabolic rates(E3) A. true B. false C. this is dependent on animal ...

PNB 2250 Exam 1 Latest Questions And Answers 2024/2025 Updates What traits to animal’s share? ANS Eukaryotic, heterotrophic, able to move Cell to cell connections in plants ANS Plasmodesma, flow of nutrients between cells Cell to cell connections animals ANS Tight junctions, strong connection Some multicellularity advantages ANS Cells have dedicated tasks (increase efficiency) Not all genes expressed (saves energy) Cells are further away from surface, ease on homeostasis Dis...

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 ...

PNB 2250 Exam 1 Study Set Questions And Answers Rated A+

PNB 2250 EXAM 1 QUESTIONS AND ANSWERS ALREADY PASSED 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. (e) Early anaerobi...