Pnb 2250 - Study guides, Class notes & Summaries

PNB 2250 Core Temperature Regulation Latest Study Guide 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...

Name an animal that has neither a circulatory system nor a respiratory system and relies solely on cutaneous diffusion for gas exchange. How is this adequate for its survival? - Small and thin animals, like flatworms and horsehair worm parasites, have no respiratory or circulatory systems and solely rely on cutaneous/cuticle diffusion through water or air. Examples of respiratory structures of aquatic animals - bulk flow (sponges, cnidarians), gills, water vascular system, arborescent respi...

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...

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...

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

PNB 2250 Exam 3 UCONN Questions And Answers With Real Tests The loss of digestive wastes, CO2 and NH4+ are examples of _______________. ANS excretion The regulation of H2O and solutes is via ___________________. ANS osmoregulation Water moves from an area of ________ (low, high) osmolarity to an area of __________ (low, high) osmolarity ANS low, high ___________: a chemical dissolved in a solvent (H2O is the only solvent we are interested in) [6.02]. ___________s occupy space within...

what animals must do? - - Mechanism for excreting waste - Mechanism for development and growth - Energy input Disadvantage of multicellularity - Need special cell/cell connections Need for cell/cell communication Need system for distribution of nutrients What traits to animals share? - Eukaryotic, heterotrophic, able to move Why is the fossil record incomplete? - Needs to die near water, fossilization process needs to be in a situation where there's no oxygen present, rapidly covered in...

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...