Pnb 2250 exam 1 - Study guides, Class notes & Summaries

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

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 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...

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 anaerobic life used heme-based proteins to minimize oxygen toxici...

PNB 2250 EXAM 1 QUESTIONS WITH 100% PERFECT ANSWERS BASED ON LECTURES 1-7

Respiratory proteins ...(E1) a. increase the carbon dioxide carrying capacity of water up to 50-fold. b. have a fixed affinity for oxygen c. depend on carbonic anhydrase to transport oxygen d. must contain iron. e. are not accurately described by any of the above statements - (e) are not accurately described by any of the above statements What is an advantage of a closed circulatory system? (E1) a. Blood can flow in any direction within a blood vessel. b. It requires less blood volume t...

control system components of homeostasis - (1) sensor (protein based) (2) controller (3) effector (changes physiological variable) physical factors of animals - (1) energy input (cost/benefit ratio) (2) waste removal (3) growth and development (4) impacts of physics, chemistry, geometry on body form convergent evolution - organisms independently evolve similar traits as a result of having to adapt to similar environments limited solutions to the same problem analogous structures - flig...

PNB 2250 EXAM 1-4 Questions (Final Review) Questions And Answers Latest Top Score. Which statement is true? (E1) 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 min...

PNB 2250 Exam 1 Questions And Answers Plant specific cell to cell connections ANS plasmodesma animal specific cell to cell connections ANS tight junctions What systems are able to exist because of multicellularity? ANS Control systems and distribution What organisms have the highest number of genes? ANS Plants Why is the fossil record incomplete? ANS loss of soft tissue and DNA What is the extant ancestor to animals? ANS Choanoflagellate