Chloroplast: A cellular organelle where photosynthesis takes place.
Chlorophyll: A chemical compound that give their organelles their green color.
Stroma: A thick fluid in the inner membrane.
Thylakoids: Disked-shaped sacs located in the stroma.
Light reactions: Converts energy in sunlight to chemical energy.
Calvin cycle: Makes sugars from the atoms in carbon dioxide, hydroen ions and high energy electrons carried by NADPH.
Concept check (8.1)
1.) Draw and label a simple diagram of a chloroplast that includes the following structures: outer and inner membranes, stroma, thylakoids.
2.) What are the reactants for photosynthesis? What are the products?
The reactants are Carbon dioxide and water and the products are glucose and oxygen
3.) Name the two main stages of photosynthesis. How are the two stages related?
The light reactions and the Calvin cycle are the two main stages of photosynthesis. They are related because light reations make ATP which provides the energy to make sugar in the Calvin cycle.
Vacob 8.2
Wavelength: The distance between two adjacent waves
Electromagnetic spectrum: Very long wavelengths of gama rays.
Pigments: A chemical compound that gives color.
Paper chromatography: A method used to observe differnt pigments in a green leaf.
Photosystems: A cluster of chlorophyll and other molecules.
Concept Check (8.2)
1.)Explain why a leaf appears green.
A leaf appears green because of the chemical compounds called pigments.
2.) Describe what happens when a molecule of chlorophyll absorbs light.
Green light is reflecteed away while blue-voilet and red is absorbed.
3.) Besides oxygen, what two molecules are produced by the light reactions?
Besides oxygen, hydrogen ions and NADPH molecules are produced by light reactions.
4.) Where in the chloroplast do the light reactions take place?
Light reactions take place in the thylakoid
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