Comparing Nutrient and Gas Requirements (HSC SSCE Biology): Flashcards

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Comparing Nutrient and Gas Requirements
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Definition of autotrophs

Organisms that produce own organic nutrients from inorganic

Definition of heterotrophs

Organisms that obtain nutrients by feeding on other organisms

Heterotrophs' CO2\mathrm{CO_2} requirement

Not required

How autotrophs obtain glucose

Produced by photosynthesis

How heterotrophs obtain glucose

Ingested into digestive system, absorbed into bloodstream

Photosynthesis process

Capturing sunlight energy and storing it in glucose molecules

Purpose of cellular respiration

Breaks chemical bonds to release energy for life processes

Raw materials for photosynthesis

CO2\mathrm{CO_2} and H2O\mathrm{H_2O}

Requirements for both autotrophs & heterotrophs

Minerals, organic substances, H2O\mathrm{H_2O}, O2\mathrm{O_2}

Key difference in nutrient acquisition

Autotrophs produce own; heterotrophs consume other organisms

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