Chapter 8 Section 1

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Energy

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Energy

the ability to do work

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Thermodynamics

study of the flow and transformation of energy in the universe

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Metabolism

All of the chemical reactions that occur within an organism

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Photosynthesis

the anabolic pathway in which light energy from the sun is converted to chemical energy for use by the cell

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Cellular Respiration

catabolic pathway in which organic molecules are broken down to release energy for use by the cell

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Adenosine Triphosphate (ATP)

the most important biological molecule that provides chemical energy

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Autotrophs

Organism that make their own food, often through the process of photosynthesis.

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Heterotrophs

An organism that obtain energy by performing cellular respiration to get energy from organic molecules they consume from the environment.

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First Law of Thermodynamics

The law of conservation of energy; energy can be converted from one form to another, but it cannot be created or destroyed.

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Second Law of Thermodynamics

energy cannot be converted without the loss of usable energy. "Lost" energy is usually converted to heat (thermal energy).

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Adenine

The part of ATP labeled with the number 1.

<p>The part of ATP labeled with the number 1.</p>
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Ribose

The part of ATP labeled with the number 2.

<p>The part of ATP labeled with the number 2.</p>
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Phosphate Group (Triphosphase)

The part of ATP labeled with the number 3.

<p>The part of ATP labeled with the number 3.</p>
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