Pnb 2250 exam - Study guides, Class notes & Summaries
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PNB 2250 Exam 3 Questions and Answers | 100% Pass
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PNB 2250 Exam 3 Questions and 
Answers | 100% Pass 
Examples of respiratory structures of terrestrial animals - Answer-bulk flow with 
tracheal system and spiracles (insects), cutaneous (frog) 
Examples of respiratory structures of aquatic animals - Answer-bulk flow 
(sponges, cnidarians), gills, water vascular system, arborescent respiratory trees (sea 
cucumber), cutaneous (leech) 
Do all aquatic animals necessarily exchange gasses in water? - Answer-No, 
some aquatic animals could exchange ga...
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PNB 2250 Exam 1 Questions and Answers |100% Pass
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PNB 2250 Exam 1 Questions and 
Answers |100% Pass 
What traits to animals share? - Answer-Eukaryotic, heterotrophic, able to move 
Cell to cell connections in plants - Answer-Plasmodesmo, flow of nutrients 
between cells 
Cell to cell connections animals - Answer-Tight junctions, strong connection 
Some multicellularity advantages - Answer-Cells have dedicated tasks (increase 
efficiency) 
Not all genes expressed (saves energy) 
Cells are further away from surface, ease on homeostasis 
Disadvant...
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PNB 2250 Exam 1 (final exam prep) Study Guide
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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...
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PNB 2250 EXAM 1 QUESTIONS AND ANSWERS | 100% PASS
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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. - 
Answer-(e) Early ana...
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PNB 2250 EXAM 1 STUDY GUIDE WITH COMPLETE & VERIFIED SOLUTIONS
- Exam (elaborations) • 8 pages • 2024
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PNB 2250 EXAM 1 STUDY GUIDE WITH 
COMPLETE & VERIFIED SOLUTIONS 
Emergent properties of animal physiology - Answer-- Atoms 
- Molecules 
- Cells 
- Tissues 
- Organs 
- Integrated organ systems 
Physiological tolerances affects the _________ & ___________ of species. 
Physiology also influences higher levels of biological organization (4 things): - 
Answer-distribution, abundance 
-Population 
-Community 
-Ecosystem 
-Biome 
Evolving specializations is risky because... - Answer-environments can ...
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PNB 2250 EXAM BUNDLE GRADED A+
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PNB 2250 EXAM BUNDLE GRADED A+
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PNB 2250 Exam 3 Uconn Study guide with complete solutions
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PNB 2250 Exam 3 Uconn Study guide 
with complete solutions 
The loss of digestive wastes, CO2 and NH4+ are examples of _______________. - 
Answer-excretion 
The regulation of H2O and solutes is via ___________________. - Answer- 
osmoregulation 
Water moves from an area of ________ (low, high) osmolarity to an area of 
__________ (low, high) osmolarity - Answer-low, high 
___________: a chemical dissolved in a solvent (H2O is the only solvent we are 
interested in) [6.02]. ___________s occupy sp...
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PNB 2250 Exam 2 Study Questions and Answers | 100% Pass
- Exam (elaborations) • 5 pages • 2024
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PNB 2250 Exam 2 Study Questions and 
Answers | 100% Pass 
Animals must provide ____ (4) for food processing - Answer-.path for intake 
chemical & mechanical digestion 
reabsorption of nutrients 
loss of waste products 
Where is the fuel from food acquired? - Answer-chemical bonds 
energy was used to make bonds, and will be released when it is broken 
Homeostasis - Answer-maintenance of internal environment 
Basal Metabolic Rate (BMR) - Answer-amount of energy expended when at rest 
in a neutral ...
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