Unit C Flashcards
Definition of Photon?
A packet of light
Definiton of Chlorophyll?
the light-absorbing green-coloured pigment that begins the process of photosynthesis
Definiton of Chloroplast?
a membrane-bound organelle in green plant and algal cells that carries out photosynthesis
Definiton of Stroma?
the protein-rich semiliquid material in the interior of a chloroplast
Definition of Thylakoid?
a system of interconnected flattened membrane sacs forming a separate compartment within the stroma of a chloroplast
Definiton of Grana?
(singular: granum ) stacks of thylakoids
Definiton of Lamellae?
(singular: lamella ) groups of unstacked thylakoids between grana
Definiton of Thylakoid Membrane?
the photosynthetic membrane within a chloroplast that contains light-gathering pigment molecules and electron transport chains
Definiton of Thylakoid Lumen?
the fluid-filled space inside a thylakoid
Definiton of ATP?
a molecule containing three high-energy phosphate bonds that acts as the primary energy-transferring molecule in living organisms
Definiton of ADP?
a molecule containing two high-energy phosphate bonds that may be formed by breaking one of the phosphate bonds in ATP
Definiton of NADP+?
a compound that accepts one hydrogen atom and two electrons, forming NADPH; is an electron acceptor
Definiton of NADPH?
compound that donates one hydrogen atom and two electrons to another molecule, to reform NADP + ; is an electron donor
Definiton of Light-Dependent Reactions?
the first set of reactions of photosynthesis in which light energy excites electrons in chlorophyll molecules, powers chemiosmotic ATP synthesis, and results in the reduction of NADP to NADPH
Definiton of Carbon Fixation?
the process of incorporating CO 2 into carbohydrate molecules
Definiton of Calvin Cycle?
a cyclic set of reactions occurring in the stroma of chloroplasts that fixes the carbon of CO 2 into carbohydrate molecules and recycles coenzymes