Pnb 2250 exam 1 4 - Study guides, Class notes & Summaries

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

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 4 (final exam review) Study Guide with Complete Solutions stimulus - Ans:-detection by interaction with cellular proteins a change in cellular properties that generates a signal to other cells (chemical and electrical) causes a change in physiological state Control Systems - Ans:-(1) measure (2) compare to desired values (3) compute what changes need to be made (4) correct and carry out negative feedback process - Ans:-limited the change in physiological process ©GRACEA...

PNB 2250 Exam 1 Study Set Questions and Answers Animals Traits - Ans:--distinguish them from plants and single cell organisms -eukaryotic, multicellular, complex tissues, differentiated tissues -heterotrophic: consume living or dead plants or animals -movement or sessile (stuck to something) Advantages of Multicellularity - Ans:-1. Cells dedicated to specific tasks, increase in efficiency 2. Not all genes expressed, saves energy 3. Cells farther away from surface (easier to maintain home...

PNB 2250 EXAM 4 (final exam review) Study GUIDE stimulus - Ans:-detection by interaction with cellular proteins a change in cellular properties that generates a signal to other cells (chemical and electrical) causes a change in physiological state Control Systems - Ans:-(1) measure (2) compare to desired values (3) compute what changes need to be made ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 2/60 (4) correct and carry out negative fe...

PNB 2250- Core Temperature Regulation Exam Study Guide Large animals - Ans:-heat is lost and gained slowly so on a hot day the animal never deviates much from core temperature -Doesn't need to replace heat as quickly -only needs to eat 25% of body weight Small animals - Ans:--Heat is gained and lost quickly - Has to eat as much as 4 times the body weight each day to maintain heat Dinosaurs - Ans:-Core temperature ranged from 32-43 degrees celsius Were able to keep core temperature ab...

PNB 2250 Exam Practice Questions and Answers How are plant cells held together? - Ans:-Plasmodesma Plasmodesma - Ans:-Flow of nutrients between cells How are animal cells held together? - Ans:-Tight junctions Tight junctions - Ans:-Unique connections for animal cells 2 absolute requirements of animals: - Ans:-1. Control Systems 2. Distribution Systems True/False: gene number is proportional to physical structure or complexity - Ans:-FALSE - it is NOT proportional Which fossils do we fi...

PNB 2250 EXAM 1 PRACTICE QUESTIONS AND ASNWERS 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. - Ans:-(e) Early anaerobic...

PNB 2250 Exam 4 (UConn) Questions and Answers Allen's Rule - Ans:-Animal shapes minimizes heat loss in cold climates and heat gain in warm climates Related to surface/volume Arm length in tropical climates longer than arm length in cold climates Might be related to cartilage growth Effects of temperature Isometric growth - Ans:-◦ A change in size w/o a change in proportion ◦ E.g., as an animal doubles in size, the length of the legs also changes in proportion ©GRACEAMELIA 202...

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...