IB Environmental systems and societies Topic 2.2B Photosynthesis and Cellular Respiration Revision Notes (SL/HL)

IB Environmental systems and societies Topic 2.2B Photosynthesis and Cellular Respiration Revision Notes (SL/HL) | RevisionDojo

Written by official IB examiners

Photosynthesis: Producers Turn Light into Stored Chemical Energy

Definition

Photosynthesis

Photosynthesis is the conversion of light energy into chemical energy in the form of glucose, which can later be stored as biomass or used as fuel by autotrophs.

Photosynthesis is the process by which producers convert light energy from the Sun into chemical energy stored in glucose.
1. It is carried out by producers (autotrophs) such as green plants, algae, and photosynthetic bacteria.
2. The reaction takes place in chloroplasts, which contain the pigment chlorophyll that captures visible light.
The glucose produced is an immediate energy source or can be stored as biomass.

Inputs, Process, and Outputs of Photosynthesis

Inputs: light energy, carbon dioxide, and water.
1. Carbon dioxide (CO₂) is taken from the atmosphere.
2. Water (H₂O) is absorbed from the soil.
Process: chlorophyll absorbs light energy and drives the reaction inside chloroplasts.
Outputs: glucose and oxygen.
1. Glucose (C₆H₁₂O₆) stores chemical energy in biomass.
2. Oxygen (O₂) is released into the atmosphere.

Carbon dioxide + water + light energy → glucose + oxygen

Transformation of Energy and Matter

Photosynthesis transforms light energy into chemical energy held in the bonds of glucose.
This stored energy can later be used by the plant or passed to organisms that feed on it.
Glucose can be converted into other carbon compounds such as starch, cellulose, proteins, and lipids that build biomass.

Nice try, unfortunately this paywall isn't as easy to bypass as you think. Want to help devleop the site? Join the team at https://revisiondojo.com/join-us. exercitation voluptate cillum ullamco excepteur sint officia do tempor Lorem irure minim Lorem elit id voluptate reprehenderit voluptate laboris in nostrud qui non Lorem nostrud laborum culpa sit occaecat reprehenderit

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.

Unlock the rest of this chapter with a free account

Photosynthesis: Producers Turn Light into Stored Chemical Energy

Definition

Photosynthesis

Photosynthesis is the conversion of light energy into chemical energy in the form of glucose, which can later be stored as biomass or used as fuel by autotrophs.

Photosynthesis is the process by which producers convert light energy from the Sun into chemical energy stored in glucose.
1. It is carried out by producers (autotrophs) such as green plants, algae, and photosynthetic bacteria.
2. The reaction takes place in chloroplasts, which contain the pigment chlorophyll that captures visible light.
The glucose produced is an immediate energy source or can be stored as biomass.

Inputs, Process, and Outputs of Photosynthesis

Inputs: light energy, carbon dioxide, and water.
1. Carbon dioxide (CO₂) is taken from the atmosphere.
2. Water (H₂O) is absorbed from the soil.
Process: chlorophyll absorbs light energy and drives the reaction inside chloroplasts.
Outputs: glucose and oxygen.
1. Glucose (C₆H₁₂O₆) stores chemical energy in biomass.
2. Oxygen (O₂) is released into the atmosphere.

Carbon dioxide + water + light energy → glucose + oxygen

Transformation of Energy and Matter

Photosynthesis transforms light energy into chemical energy held in the bonds of glucose.
This stored energy can later be used by the plant or passed to organisms that feed on it.
Glucose can be converted into other carbon compounds such as starch, cellulose, proteins, and lipids that build biomass.

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.

Topic 1: Foundation 3 subtopics

Topic 2: Ecology5 subtopics

Topic 3: Conservation and biodiversity3 subtopics

Topic 4: Water4 subtopics

Topic 5: Land2 subtopics

Topic 6: Atmosphere and climate change4 subtopics

Topic 7: Natural resources3 subtopics

Topic 8: Human populations and urban systems3 subtopics

HL lenses 3 subtopics

IB Environmental systems and societies 2.2B Photosynthesis and Cellular Respiration Notes

Topic 1: Foundation 3 subtopics

Topic 2: Ecology5 subtopics

Topic 3: Conservation and biodiversity3 subtopics

Topic 4: Water4 subtopics

Topic 5: Land2 subtopics

Topic 6: Atmosphere and climate change4 subtopics

Topic 7: Natural resources3 subtopics

Topic 8: Human populations and urban systems3 subtopics

HL lenses 3 subtopics

Photosynthesis: Producers Turn Light into Stored Chemical Energy

Inputs, Process, and Outputs of Photosynthesis

Transformation of Energy and Matter

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

Photosynthesis: Producers Turn Light into Stored Chemical Energy

Inputs, Process, and Outputs of Photosynthesis

Transformation of Energy and Matter

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