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Chp7 BIO 121

Photosynthesis

QuestionAnswer
Converts solar energy into the chemical energy of a carbohydrate. Photosynthesis
Photosynthetic organisms; producers; produce their own food. Autotrophs
Must take in preformed organic molecules; consumers. Heterotrophs; depend of Autotrophs
What do leaves contain that are specialized for photosynthesis? Mesophyll tissues
What are the raw materials used for photosynthesis? Water and Carbon Dioxide
What is the function of vascular tissues? They bring water from roots to leaves
Where does carbon dioxide enter and oxygen exit? The stomata
What is the fluid-like substance inside the choloroplast? The stroma
Multiple thyllakoids resembling stacks of coins Grana
Membrane bounded compartment inside chloroplasts. Thyllakoids; site of light-dependent reactions
The primary photosynthetic pigment Chlorophyll alpha; absorbs well at wavelength of 400-450 nm and at 650-700 nm
Accessory pigment that collects the energy to pass on to chlorophyll alpha Chlorophyll beta; absorbs well at wavelength of 450-500 nm and at 600-650 nm
Organic pigments that absorb light energy for use in photosynthesis and protect chlorophyll from photodamage Carotenoids; found in thyllakoid membrane
Empty area that helps to absorb the light in photosynthesis Thyllakoid space
Chlorophyll pigments located within the thyllakoid membrane absorb solar energy , which energizes electrons Light-dependent reactions
Second stage of photosynthesis, where energy released from ATP drives the production of organic molecules from carbon dioxide (Dark) Calvin cycle reactions
Pigment complex in Photosystem II absorbs solar energy. Noncyclic Electron Pathway
Begins when the PS I pigment complex absorbs solar energy Cyclic Electron Pathway; products: ATP only.
In this pigment complex, energy is passed from one pigment to another until it is concentrated in a pair of chlorophyll a molecule called the reaction center. Noncyclic Electron Pathway; products: ATP and NADPH.
Electron acceptor molecules Where overly-energized electrons in the reaction center escape to; in the Noncyclic Electron Pathway
Electron acceptors send electrons in them to this in the Cyclic Electron Pathway. Electron Transport Chain; a series of carriers in both pathways
As electrons are passed from one carrier to the next, energy is captured and stored in the form of what? A hydrogen ion gradient. (H+)
When hydrogen ions flow down their electrochemical gradient through ATP synthase complexes, this occurs. ATP production
ATP produced in the noncyclic electron pathway will be used in the cyclic electron pathway to produce what? It reduces carbon dioxide to carbohydrates in the stroma.
Created by: 722741089
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