An organism that produces its own nutrients from inorganic substances of from the environment instead of consuming other organisms.

The process by which plants, algae, and some bacteria use sunlight, carbon dioxide, and water to produce carbohydrates and oxygen.

An organism that obtains organic food molecules by eating other organisms or their byproducts and that cannot synthesize organic compounds from inorganic materials.

Initial reactions in photosynthesis, which are triggered by the absorption of light by photosystems 1 & 2 & include passage of electrons along electron transport chains, the production of NADPH & oxygen gas, & the synthesis of ATP through chemiosmosis.

An organelle found in plant and algae cells where photosynthesis occurs.

A membrane system found within chloroplasts that contains the components for photosynthesis.

A stack of thylakoids in a chloroplast.

In plants, the solutions that surrounds the thylakoids in a chloroplast.

A substance that gives another substance of mixture its color.

A green pigment that is present in most plant cells, that gives plants their characteristic green color, and that reacts with sunlight, carbon dioxide, and water to form carbohydrates.

A class of pigments that are present in the thylakoid membrane of plants and that aid in photosynthesis.

In the thylakoids membranes of chloroplasts, a cluster of chlorophyll and other pigment molecules that harvest light energy for light reactions of photosynthesis.

Primary Electron Acceptor

In chloroplasts, an acceptor of electrons lost from chlorophyll a; found in the thylakoid membrane.

Electron Transport Chain

Series of molecules, found in the inner membranes of mitochondria and chloroplasts, through which electrons pass in a process that causes protons to build up on one side of the membrane.

In chloroplasts and mitochondria, a process in which movement of protons down their concentration gradient across a membrane is coupled to the synthesis of ATP.

A biochemical pathway of photosynthesis in which carbon dioxide is converted into glucose using ATP.

The synthesis of organic compounds from carbon dioxide, such as in photosynthesis.

The major passageways through which CO2 enters and O2 leaves a plant.

A carbon-fixing process in which carbon dioxide is bound to a compound to form a four-carbon intermediate.

A water-conserving, carbon fixing process; CAM plants take in carbon at night and fix it into various organic compounds and release it during the day.

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Ch 6 Bio Terms

Chapter 6 Biology Terms

Term	Definition
Autotroph	An organism that produces its own nutrients from inorganic substances of from the environment instead of consuming other organisms.
Photosynthesis	The process by which plants, algae, and some bacteria use sunlight, carbon dioxide, and water to produce carbohydrates and oxygen.
Heterotroph	An organism that obtains organic food molecules by eating other organisms or their byproducts and that cannot synthesize organic compounds from inorganic materials.
Light Reactions	Initial reactions in photosynthesis, which are triggered by the absorption of light by photosystems 1 & 2 & include passage of electrons along electron transport chains, the production of NADPH & oxygen gas, & the synthesis of ATP through chemiosmosis.
Chloroplast	An organelle found in plant and algae cells where photosynthesis occurs.
Thylakoid	A membrane system found within chloroplasts that contains the components for photosynthesis.
Granum	A stack of thylakoids in a chloroplast.
Stroma	In plants, the solutions that surrounds the thylakoids in a chloroplast.
Pigment	A substance that gives another substance of mixture its color.
Chlorophyll	A green pigment that is present in most plant cells, that gives plants their characteristic green color, and that reacts with sunlight, carbon dioxide, and water to form carbohydrates.
Carotenoid	A class of pigments that are present in the thylakoid membrane of plants and that aid in photosynthesis.
Photosystem	In the thylakoids membranes of chloroplasts, a cluster of chlorophyll and other pigment molecules that harvest light energy for light reactions of photosynthesis.
Primary Electron Acceptor	In chloroplasts, an acceptor of electrons lost from chlorophyll a; found in the thylakoid membrane.
Electron Transport Chain	Series of molecules, found in the inner membranes of mitochondria and chloroplasts, through which electrons pass in a process that causes protons to build up on one side of the membrane.
Chemiosmosis	In chloroplasts and mitochondria, a process in which movement of protons down their concentration gradient across a membrane is coupled to the synthesis of ATP.
Calvin Cycle	A biochemical pathway of photosynthesis in which carbon dioxide is converted into glucose using ATP.
Carbon Fixation	The synthesis of organic compounds from carbon dioxide, such as in photosynthesis.
Stomata	The major passageways through which CO2 enters and O2 leaves a plant.
C4 Pathway	A carbon-fixing process in which carbon dioxide is bound to a compound to form a four-carbon intermediate.
CAM Pathway	A water-conserving, carbon fixing process; CAM plants take in carbon at night and fix it into various organic compounds and release it during the day.

Created by: GarciaC17

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