Concept 10.1 Photosynthesis converts light energy to the chemical energy of food. Photosynthetic enzymes and other molecules of photoautotrophs are grouped together in a biological membrane, allowing the necessary series of chemical reactions to be carried out efficiently.
The overall function of light-dependent reactions is to convert solar energy into chemical energy in the form of NADPH and ATP. This chemical energy supports the light-independent reactions and fuels the assembly of sugar molecules. The light-dependent reactions are depicted in . Protein complexes and pigment molecules work together to produce
Concept 10.2 The light reactions convert solar energy to the chemical energy of ATP and NADPH . This is a long and challenging concept. Take your time, work through the questions, and realize that Within the photosystems, the critical conversion of solar energy to chemical energy occurs. This process is the essence of being a producer
Study Concept 10.2: The light reactions convert solar energy to the chemical energy of ATP and NADPH flashcards from Delphia Harper''s class online, or in Brainscape''s iPhone or Android
The light reactions use the solar power of photons absorbed by PS II and PS I to provide chemical energy in the form of ATP and reducing power in the form of the electrons carried by NADPH to the carbohydrate-synthesizing reactions of the Calvin cycle.
Chapter 10: Photosynthesis - 1 - Chapter 10: Photosynthesis 10 Describe the roles of autotrophs and heterotrophs in the biosphere. 10 Specify where photosynthesis occurs and describe, in general, how it converts light energy into chemical energy. 10 Trace the sequence of events during the light reactions that convert solar energy to chemical energy. 10 Explain how the
This chemical energy is then used during the light-independent reactions (Calvin cycle) to build sugar molecules. The actual step that converts light energy into chemical energy takes place in a multiprotein complex called a photosystem, two types of which are found embedded in the thylakoid membrane: photosystem II (PSII) and photosystem I (PSI).
Chapter 10: Photosynthesis. 10 Describe the roles of autotrophs and heterotrophs in the biosphere. 10 Specify where photosynthesis occurs and describe, in general, how it converts light en- ergy into chemical energy. 10 Trace the sequence of events during the light reactions that convert solar energy to chemical energy. 10 Explain how the Calvin cycle uses the chemical
Photosynthesis is a redox reaction. It reverses the direction of electron flow in respiration. Water is split and electrons transferred with H+ from water to CO2, reducing it to sugar. Because the electrons increase in potential energy as they move from water to sugar, the process requires energy. The energy boost is provided by light.
The Two Parts of Photosynthesis. Photosynthesis takes place in two stages: the light-dependent reactions and the Calvin cycle. In the light-dependent reactions chlorophyll absorbs energy from sunlight and then converts it into chemical energy with the aid of water. The light-dependent reactions release oxygen as a byproduct from the splitting of water.
ATP is a molecule that acts as an intermediary to store chemical energy for cellular work. (ATP is a renewable resource that can be regenerated by the addition of inorganic phosphate— Pi— to ADP. Energy released by catabolism in the cell is used to phosphorylate ADP, regenerating ATP. Chemical energy stored in ATP drives most cellular work.)
The carriers that move energy from the light-dependent reactions to the Calvin cycle reactions can be thought of as "full" because they bring energy. After the energy is released, the "empty" energy carriers return to the light-dependent reactions to obtain more energy. To convert solar energy into chemical energy that cells can use
The light-dependent reactions release oxygen from the hydrolysis of water as a byproduct. In the Calvin cycle, which takes place in the stroma, the chemical energy derived from the light-dependent reactions drives both the capture of carbon in carbon dioxide molecules and the subsequent assembly of sugar molecules. The two reactions use carrier
How Light-Dependent Reactions Work. The overall purpose of the light-dependent reactions is to convert light energy into chemical energy. This chemical energy will be used by the Calvin cycle to fuel the assembly of sugar molecules. The light-dependent reactions begin in a grouping of pigment molecules and proteins called a photosystem
Keep in mind that the purpose of the light-dependent reactions is to convert solar energy into chemical carriers that will be used in the Calvin cycle. In eukaryotes and some prokaryotes, two photosystems exist. The first is called photosystem II, which was named for the order of its discovery rather than for the order of the function.
Concept 10.2 : The light reactions convert solar energy to the chemical energy of ATP and NADPH Chloroplasts harvest light energy to convert it to chemical energy. The Nature of Sunlight Light energy is known as electromagnetic radiation. Light can travel like a wave, so we can describe its wavelength.
10 Trace the sequence of events during the light reactions that convert solar energy to chemical energy. 10 Explain how the Calvin cycle uses the chemical energy of ATP and NADPH to reduce CO 2 to sugar. 10 Identify alternative mechanisms of carbon fixation that have evolved in hot,
between the light reactions and the Calvin cycle. See page 188 of your text for the labeled figure. Concept 10.2 The light reactions convert solar energy to the chemical energy of ATP and NADPH This is a long and challenging concept. Take your time, work through the questions, and realize that this is the key concept for photosynthesis. 7.
Start studying 10.1 photosynthesis converts light energy to the chemical energy of food. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Search. Browse. Create. Chlorophyll a participates directly in the light reactions, which convert solar energy to chemical energy. light reactions.
Concept 10.2 The light reactions convert solar energy to the chemical energy of ATP and NADPH. Light is a form of electromagnetic energy or radiation. Like other forms of electromagnetic energy, light travels in rhythmic waves. The distance between crests of electromagnetic waves is called the . wavelength.
Concept 10.2 The light reactions convert solar energy to the chemical energy of ATP and NADPH • Light is a form of electromagnetic energy or radiation. • Like other forms of electromagnetic energy, light travels in _____ waves. • The distance between crests of electromagnetic waves is called the _____.
The light-dependent reactions release oxygen from the hydrolysis of water as a byproduct. In the Calvin cycle, which takes place in the stroma, the chemical energy derived from the light-dependent reactions drives both the capture of
Photosystems Absorb Light Energy. The actual step that converts light energy into chemical energy takes place in a multiprotein complex called a photosystem, two types of which are found embedded in the thylakoid membrane, photosystem II (PSII) and photosystem I (PSI) (Figure (PageIndex{9})). The two complexes differ on the basis of what
KEY CONCEPTS 10.1 Photosynthesis converts light energy to the chemical energy of food 10.2 The light reactions convert solar energy to the chemical energy of ATP and NADPH 10.3 The Calvin cycle uses the chemical energy of ATP and NADPH to reduce CO 2 to sugar 10.4 Alternative mechanisms of carbon fixation have evolved in hot, arid climates
10.3 The Light Reactions Convert Solar Energy to the Chemical Energy of ATP and Nadph; 10.5 Alternative Mechanisms of Carbon Fixation have Evolved in Hot, Arid Climates; 10.6 Photosynthesis is Essential for Life pn Earth A Review; 9.1 Catabolic Pathways Yield Energy by Oxidizing Organix Fuels
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