General Biology 2: Nutrition and Gas Exchange
Biology 2 - Nutrition and Gas Exchange
Flashcards (5) Click to reveal answers
Card #1
Front (Question/Term)
A plant is kept in a sealed room with sunlight and water but no Carbon Dioxide. Why will this "Autotroph" eventually starve?
Back (Answer/Definition) ANSWER
Plants require CO2 as an inorganic substance to manufacture their own food; without it, photosynthesis stops.
Card #2
Front (Question/Term)
Why must a "Respiratory Surface" (like the Alveoli in humans or Gills in fish) remain extremely thin and moist?
Back (Answer/Definition) ANSWER
To allow gases to dissolve in water and diffuse efficiently across the cell membrane into the bloodstream.
Card #3
Front (Question/Term)
A fish survives in water with low oxygen levels, but suffocates in air which has 21% oxygen. Why do the Gills fail on land?
Back (Answer/Definition) ANSWER
The delicate gill filaments collapse and dry out in the air, losing the surface area necessary for gas exchange.
Card #4
Front (Question/Term)
During a hot afternoon, a plant closes its "Stomata" to prevent wilting. What is the physiological "price" the plant pays for this protection?
Back (Answer/Definition) ANSWER
It blocks the intake of CO2, effectively pausing its ability to produce food.
Card #5
Front (Question/Term)
How does the "Heterotrophic" strategy of a human compare to that of a carnivorous plant?
Back (Answer/Definition) ANSWER
Both must obtain organic molecules from other organisms, but the plant uses insects primarily for minerals while humans use food for energy.
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HiddenStudy Information
Set Details
- Subject: Biology 2
- Topic: Nutrition and Gas Exchange
- Difficulty: Hard
- Created: Jan 30, 2026
- Last Updated: Jan 30, 2026
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