IB Biology Topic A2.1.2 Cells as the Smallest Units of Self-sustaining Life Revision Notes (HL)

IB Biology Topic A2.1.2 Cells as the Smallest Units of Self-sustaining Life Revision Notes (HL) | RevisionDojo

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What Makes Something Alive: The Seven Functions of Life

All living organisms share a set of functions that define life.
Cells are the smallest units capable of carrying out these functions independently.

Note

Viruses, although containing genetic material, do not meet these criteria and are therefore non-living.

The Characteristics of Living Things: MR H GREN

Living organisms can be distinguished from non-living matter by a universal set of functions of life:
1. Metabolism: Chemical reactions that convert energy and build molecules (e.g., respiration, photosynthesis).
2. Reproduction: The ability to produce offspring and pass on genetic information.
3. Homeostasis: Maintaining a stable internal environment despite external changes.
4. Growth: Increasing in size or cell number.
5. Response to Stimuli: Detecting and reacting to changes in the environment.
6. Excretion: Removing waste products from metabolism.

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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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What Makes Something Alive: The Seven Functions of Life

All living organisms share a set of functions that define life.
Cells are the smallest units capable of carrying out these functions independently.

Note

Viruses, although containing genetic material, do not meet these criteria and are therefore non-living.

The Characteristics of Living Things: MR H GREN

Living organisms can be distinguished from non-living matter by a universal set of functions of life:
1. Metabolism: Chemical reactions that convert energy and build molecules (e.g., respiration, photosynthesis).
2. Reproduction: The ability to produce offspring and pass on genetic information.
3. Homeostasis: Maintaining a stable internal environment despite external changes.
4. Growth: Increasing in size or cell number.
5. Response to Stimuli: Detecting and reacting to changes in the environment.
6. Excretion: Removing waste products from metabolism.

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.

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End of article

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

IB Biology Topic A2.1.2: Cells as the Smallest Units of Self-sustaining Life Notes

What Makes Something Alive: The Seven Functions of Life

The Characteristics of Living Things: MR H GREN

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

What Makes Something Alive: The Seven Functions of Life

The Characteristics of Living Things: MR H GREN

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