Lesson Flashcards: Structure of the Chloroplast Biology


A molecule that absorbs specific wavelengths of light and reflects others, which gives a characteristic color to living tissue


The fluid matrix within a chloroplast that contains many enzymes, along with the DNA of the chloroplast and ribosomes


Membrane-bound disklike compartments that are suspended in the stroma of chloroplasts and form stacks of around 15 or more disks


Cell organelles that contain the green pigment chlorophyll and are found in the majority of plant leaves


A multiunit complex of organic molecules, proteins, and photosynthetic pigments like chlorophyll found in the thylakoid membranes that capture and harvest light energy


The process that converts carbon dioxide and water into sugars, such as glucose, and oxygen in the presence of sunlight

Light-dependent stage of photosynthesis

The first stage of photosynthesis in which in a series of reactions light energy is absorbed and used to split water to generate chemical energy in the form of ATP and the electron carrier NADPH


Thin membranous folds interconnecting grana that help increase the available surface area to capture light energy


Membrane-bound organelles that usually contain pigments or are used for storing food


A green pigment found in the chloroplasts of plants that absorbs the light energy required for photosynthesis

Cellular respiration

A process in living organisms through which carbon-containing compounds (e.g., glucose) are broken down to release energy in the form of ATP


A continuous internal compartment within a thylakoid that is filled with an aqueous fluid containing metabolic products, proteins, and ions

Granum (grana)

A stack of thylakoids

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