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Name:___________________________ Date:________________ Period:______ Photosynthesis Basic Parts of a Chloroplast (http://faculty.clintoncc.suny.edu/faculty/michael.gregory/files/Bio%20101/Bio%20101%20Lectures/Cells/cells.htm) Photosynthesis is a complex process in which ____________________ is converted into chemical energy in ________________________ molecules. This process occurs within the _______________________________ (a cell organelle) and specifically within the thylakoid membrane (where __________________________ occur) and the stroma (where __________________________ occur). (1) During the light-dependent reaction, _______________ is changed and light energy is converted into chemical bond energy to produce ______________, __________________ , and ____________________ gas. (2) During the light-independent reaction (also known as the Calvin cycle), ______________________ gas, ___________________, and _________________ react to produce sugars. The ATP and NADPH are used up and they then become _____________ and ____________. Chloroplasts are found in plant cells (e.g., lettuce, onion) and photosynthetic protists (e.g., euglena). Label the diagram on the left. Use (1) in the paragraph to help you label this section. a gas is produced here Label the diagram on the left. Use (2) in the paragraph to help you label this section. a gas is used here Putting It All Together: Now label the chloroplast below to show how the thylakoid membranes and the stroma work together. You are labeling what goes in and what comes out and what is cycled around. (http://www.biologycorner.com/bio3/cell_biology/photosynthesis_tutor.html) Answer: Photosynthesis is a complex process in which visible sunlight is converted into chemical energy in carbohydrate molecules. This process occurs within chloroplast and specifically within the thylakoid membrane (where light-dependent reactions occur) and the stroma (where light-independent reactions occur). During the light-dependent reaction, water is oxidized and light energy is converted into chemical bond energy generating ATP, NADPH, and oxygen gas. During the light-independent reaction (also known as the Calvin cycle), carbon dioxide gas, ATP, and NADPH react, forming phosphoglyceraldehyde, which is then converted into sugars. Chloroplasts can be in plant cells (e.g., lettuce, onion) and photosynthetic protists (e.g., euglena). (http://bio-microscope.blogspot.com/2008/03/article-photosynthesis-process-and.html) light carbon dioxide, CO2 water, H2O ATP NADP oxygen, O2 sugar, C6H12O6