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PNB 2250 EXAM 1 QUESTIONS WITH 100 % CORRECT ANSWERS |VERIFIED $7.99   Add to cart

Exam (elaborations)

PNB 2250 EXAM 1 QUESTIONS WITH 100 % CORRECT ANSWERS |VERIFIED

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  • Course
  • PNB 2250
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  • PNB 2250

three frameworks of comparative systems - -Form & function of the parts under investigation -Phylogenetic diversity & evolution of the system in different taxa -Ecophysiology Tech designs vs living systems - -Technological advancement is an evolutionary progression -Organisms are impressive, be...

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  • September 16, 2024
  • 7
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • PNB 2250
  • PNB 2250
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ACADEMICMATERIALS
PNB 2250 EXAM 1
three frameworks of comparative systems - -Form & function of the parts under investigation

-Phylogenetic diversity & evolution of the system in different taxa

-Ecophysiology



Tech designs vs living systems - -Technological advancement is an evolutionary progression

-Organisms are impressive, beautiful & awe-inspiring

>Exceedingly complex in architecture & functional adaptations

>Appropriate to speak of life forms having "design"



Emergent properties of animal physiology - - Atoms

- Molecules

- Cells

- Tissues

- Organs

- Integrated organ systems



Physiological tolerances affects the _________ & ___________ of species.

Physiology also influences higher levels of biological organization (4 things): - distribution,
abundance

-Population

-Community

-Ecosystem

-Biome



Evolving specializations is risky because... - environments can change

, Other types of physiology - Locomotion

Reproduction

Development



three frameworks of organismal approach - 1. Taxonomic classification & evolutionary
history/context.

2. Anatomy & physiology

3. Ecology




Any mutation that increases an organism's survival & lifetime reproductive success will be favored by... -
natural selection



Adaptive evolution - emerges from a nonrandom accumulation of whatever traits worked best at
the time



Limitations of Evolutionary Designs - -Selection can only act on the existing working material in a
population

-Animal phenotypes are constrained by their previous evolutionary steps

-No metacognitive decision-making towards increasing fitness

-No progressive, or teleological, evolution towards achieving end goals

-No way to anticipate future conditions

-Species are exquisitely-crafted, yet imperfect sculptures...



NKA - pump (active transport) diagram takeaway - 1. Active transporter consumes ATP to remove
3 Na+ and Takes up 2 K+

2. Pump cycles 1000x/sec to maintain steady states of potassium & sodium (equilibrium)



Because of the NKA... - ➢Cation exchange is imbalanced. 3:2 pumping ratio (out:in)

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