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)
...
How does Chemistry and Physics Affect Animal Development and Physiology? - Ans:✔✔-1. Impact on
animal form and function
2. All designs have advantages and disadvantages
3. Satisfaction of essential needs (energy input, waste removal, growth)
How Does Entropy Impact Animal Design? - Ans:✔✔-***CHONPS are 96% of body mass
-essential to work against entropy (disorder), stable bonds, allows you to make proteins, lipids, and
carbs, maintain strong structures resistant to entropy (hard to build but effective)
Homeostasis - Ans:✔✔-Def: maintain internal environment suitable for life in the face of a changing
external environment
Examples of Homeostasis - Ans:✔✔-blood pH (change in physiological variable), blood
sugar/glucose(variable), body temperature, O2 levels, hormones, sweating, shivering
Ecosystem Engineering - Ans:✔✔-Def: engineer/modify living space to help suit it to animal's needs
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