Bio 101 Chapter 8 Metabolism Flashcards


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Campbell Biology 10th Edition Chapter 8 Introduction to Metabolism
updated 6 years ago by Hanna_Sint
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1

Metabolism

The totality of an organism's chemical reactions

Manages the material and energy resources of the cell

2

Metabolic Pathway

A sequence of chemical reactions undergone by a compound or class of compounds in a living organism

3

Catabolic Pathway

Breaking down complex molecules to simpler compounds

4

Anabolic Pathway

Consume energy to build complicated molecules from simpler ones

Sometimes called biosynthetic pathways

5

Bioenergetics

The study of how energy flows through living organisms

6

Energy

The capacity to cause change

7

Kinetic Energy

Relative motion of objects

8

Thermal energy

Kinetic energy associated with the random movement of atoms or molecules

9

Heat

Thermal energy in transfer from one object to another

10

Potential Energy

Energy that matter possesses because of its location or structure

11

Chemical Energy

Potential energy available for release in a chemical reaction

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Thermodynamics

The study of the energy transformations that occur in a collection of matter

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The 1st Law of Thermodynamics

The energy of the universe is constant:

Energy can be transferred and transformed, but it cannot be created or destroyed.

Also known as the Principle of Conservation of Energy.

14

The 2nd Law of Thermodynamics

Every energy transfer or transformation increases the entropy (disorder) of the universe.

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Entropy

Disorder or randomness

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Spontaneous Process

Process can proceed without requiring an input of energy

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Free Energy

The portion of a system’s energy that can perform work when temperature and pressure are uniform throughout the system

18

Change in Free Energy Equation

ΔG = ΔH - TΔS