- Study guides, Class notes & Summaries

PNB 2250 Exam Questions and Answers 100% Pass How are plant cells held together? - Plasmodesma Plasmodesma - Flow of nutrients between cells How are animal cells held together? - Tight junctions Tight junctions - Unique connections for animal cells 2 absolute requirements of animals: - 1. Control Systems 2. Distribution Systems True/False: gene number is proportional to physical structure or complexity - FALSE - it is NOT proportional Which fossils do we find the most of? - Newer, mari...

-

18 pages

Written in 2024/2025

Grade A+

KatelynWhitman

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

-

46 pages

Written in 2024/2025

Grade A+

KatelynWhitman

PNB 2250 Exam 3 Uconn Questions and Answers 100% Pass The loss of digestive wastes, CO2 and NH4+ are examples of _______________. - excretion The regulation of H2O and solutes is via ___________________. - osmoregulation Water moves from an area of ________ (low, high) osmolarity to an area of __________ (low, high) osmolarity - low, high ___________: a chemical dissolved in a solvent (H2O is the only solvent we are interested in) [6.02]. ___________s occupy space within H2O - solute Os...

-

7 pages

Written in 2024/2025

Grade A+

KatelynWhitman

PNB 2250 EXAM 3 QUESTIONS AND ANSWERS 100% PASS 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 - A. true A size selective (but not solute selective) nephron filtration barrier ...(E3) A. is very uncommon in vertebrates B. is not found in insects, which emplo...

-

28 pages

Written in 2024/2025

Grade A+

KatelynWhitman

PNB 2250 Exam 1 Questions and Answers 100% Pass

-

2 pages

Written in 2024/2025

Grade A+

KatelynWhitman

PNB 2250 EXAM 2 QUESTIONS AND ASNWERS 100% PASS What are examples of thermal adaptation? (adapting to change in temp) (E2) - - 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) - A fever in response to an infection When elephant seals dive to a great depth...(E2) - they don't breath (they DO NOT left shift) Left-shifti...

-

16 pages

Written in 2024/2025

Grade A+

KatelynWhitman

PNB 2250 Exam 4 (UConn) Questions and Answers 100% Pass Allen's Rule - 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 - ◦ 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 ◦ Relationship ...

-

84 pages

Written in 2024/2025

Grade A+

KatelynWhitman

PNB 2250- Core Temperature Regulation Exam Questions and Answers 100% Pass Large animals - 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 - -Heat is gained and lost quickly - Has to eat as much as 4 times the body weight each day to maintain heat Dinosaurs - Core temperature ranged from 32-43 degrees celsius Were able to keep core temperatu...

-

19 pages

Written in 2024/2025

Grade A+

KatelynWhitman

PNB 2250 EXAM 4 (final exam review) Questions and Answers 100% Pass stimulus - 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 - (1) measure (2) compare to desired values (3) compute what changes need to be made (4) correct and carry out negative feedback process - limited the change in physiological process 2Katelyn Whitman, All Right...

-

54 pages

Written in 2024/2025

Grade A+

KatelynWhitman

PNB 2250 Exam 3 Questions and Answers 100% Pass Of the following, which is NOT a strategy by which endotherms generate internal heat: - Panting The minimal metabolic activity required to maintain bodily functions in a mammal is known as the - 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? - vasoconstriction Poikilothermic ecto...

-

25 pages

Written in 2024/2025

Grade A+

KatelynWhitman

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. - (e) Early anaerobic li...

-

32 pages

Written in 2024/2025

Grade A+

KatelynWhitman

PNB 2250 Exam 3 Questions and Answers 100% Pass A fish in freshwater....(E3) A. rapidly loses water through the gills B. loses solutes through the gills C. must be an osmoconformer D. actively pumps solutes out of its body through the gills E. must produce a very concentrated urine - 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 shape 2Kat...

-

21 pages

Written in 2024/2025

Grade A+

KatelynWhitman

PNB 2250 Exam 3 Review - UConn

-

5 pages

Written in 2024/2025

Grade A+

BravelRadon

PNB 2250 EXAM 4 final exam review Questions With Complete Solutions

-

40 pages

Written in 2024/2025

Grade A+

Classroom

PNB 2250 Bundled Exams Questions and Answers - Updated 2024

-

15 items

GraceAmelia

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...

-

22 pages

Written in 2024/2025

Grade A+

GraceAmelia

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...

-

20 pages

Written in 2024/2025

Grade A+

GraceAmelia

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...

-

96 pages

Written in 2024/2025

Grade A+

GraceAmelia

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...

-

60 pages

Written in 2024/2025

Grade A+

GraceAmelia

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...

-

59 pages

Written in 2024/2025

Grade A+

GraceAmelia