University:
Michigan State University
Course:
BS 161 | Cell and Molecular Biology
Academic year:

2022
Views:

471

Pages:

2
Author:

sonalhava9qv

Notes - Photosynthesis Photosynthesis – means to make from _light_________. In short, this is how plants make ___glucose___________ otherwise known as their food. Photosynthesis occurs in the Chloroplasts of plant cells. Anatomy of a Chloroplast: Thylakoids – __coin-shaped_______________ membranes located inside chloroplasts that contain __chlorophyll____________ Chlorophyll – is a photosynthetic _pigment_____________ that is integral in the photosynthesis reaction. Many different types of chlorophyll exist. Grana – __stacks_________ or groups of ___thylakoids_____________ that work together to carry out the photosynthetic reactions. Stroma – the _gel-filled_____________ matrix surrounding the thylakoids. Think about what plants need to live: __carbon__________ _dioxide________, ____water______, and __light________. The pigments in the chlorophyll absorb light energy. The different types of chlorophyll present in plants determines how light is __absorbed_________. The general equation for photosynthesis is as follows: _6CO2___ + ___6H2O______ ____6O2________ + __C6H12O6___________ Photosynthesis occurs inside of the chloroplast in two forms, the light__dependent___________ reaction and the light independent reaction (aka The Dark Reaction or ___Calvin_________ Cycle). Light Reaction This occurs in the ___thylakoid________ membranes of the chloroplasts. The thylakoids appear as stacked coins. During this part of the reaction, __water___________ molecules are split and ____oxygen________ released. Then ___light________ waves excite ___chlorophyll_________ molecules and boost the Hydrogen atoms to higher energy levels. These Hydrogen atoms get sent to the Dark Reaction. Dark Reaction The “high energy hydrogens” get sent to the dark reaction and are combined with _CO2________. The dark reaction occurs in the gel-filled space around the thylakoids called the _stroma________. This part of the reaction also known as The __Calvin_________ Cycle eventually produces ___glucose________.