IB Biology Topic C4.2.8 Heterotrophs Revision Notes (SL/HL)

IB Biology Topic C4.2.8 Heterotrophs Revision Notes (SL/HL) | RevisionDojo

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Heterotrophs: Getting Carbon Compounds by Eating Other Organisms

Heterotrophs obtain carbon compounds from other organisms rather than making them from inorganic substances.
They use these compounds to synthesise the carbohydrates, proteins, lipids, and nucleic acids their own cells need.

Definition

Heterotroph

Organisms that obtain energy and carbon by consuming other organisms or organic matter.

Ingestion: Taking In Food From Other Organisms

Heterotrophs take in carbon compounds by feeding on other organisms, whether plants, animals, or dead material.
Their position in the food chain, as a consumer at different trophic levels, is developed further in the ecology subtopics of Theme C4.

Note

Digestion can happen internally inside the body or externally outside it, depending on the organism.

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Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Duis aute irure dolor in reprehenderit

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit.

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

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Heterotrophs: Getting Carbon Compounds by Eating Other Organisms

Heterotrophs obtain carbon compounds from other organisms rather than making them from inorganic substances.
They use these compounds to synthesise the carbohydrates, proteins, lipids, and nucleic acids their own cells need.

Definition

Heterotroph

Organisms that obtain energy and carbon by consuming other organisms or organic matter.

Ingestion: Taking In Food From Other Organisms

Heterotrophs take in carbon compounds by feeding on other organisms, whether plants, animals, or dead material.
Their position in the food chain, as a consumer at different trophic levels, is developed further in the ecology subtopics of Theme C4.

Note

Digestion can happen internally inside the body or externally outside it, depending on the organism.

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

IB Biology Topic C4.2.8: Heterotrophs Notes

Heterotrophs: Getting Carbon Compounds by Eating Other Organisms

Ingestion: Taking In Food From Other Organisms

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Heterotrophs: Getting Carbon Compounds by Eating Other Organisms

Ingestion: Taking In Food From Other Organisms

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics