CH8 Outline and Vocabulary

CH8 Outline and Vocabulary -...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%% Chapter 8: Energy & Enzymes Chapter 8 Vocabulary: Chapter 8.1 Vocabulary: Metabolism: The totality of an organism’s chemical reactions, consisting of catabolic and anabolic pathways, which manage the material and energy resources of the organism. Metabolic Pathway: A series of chemical reactions that either builds a complex molecule (anabolic pathway) or breaks down a complex molecule into simpler compounds (catabolic pathway). Catabolic Pathway: A metabolic pathway that releases energy by breaking down complex molecules to simpler compounds. Anabolic Pathway: A metabolic pathway that consumes energy to synthesize a complex molecule from simpler compounds. Bioenergetics: (1) The overall flow and transformation of energy in an organism. (2) The study of how energy flows through organisms. Energy: The capacity to cause change, especially to do work (to move matter against an opposing force). Kinetic Energy: The energy associated with the relative motion of objects. Moving matter can perform work by imparting motion to other matter. Heat or Thermal Energy: The total amount of kinetic energy due to the random motion of atoms or molecules in a body of matter; also called thermal energy. Heat is energy in its most random form. Potential Energy: The energy that matter possesses as a result of its location or spatial arrangement (structure). Chemical Energy: Energy available in molecules for release in a chemical reaction; a form of potential energy. Thermodynamics: The study of energy transformations that occur in a collection of matter. See first law of thermodynamics; second law of thermodynamics. First Law of Thermodynamics: The principle of conservation of energy: Energy can be transferred and transformed, but it cannot be created or destroyed. Entropy: A measure of disorder, or randomness. Second Law of Thermodynamics: The principle stating that every energy transfer or transformation increases the entropy of the universe. Ordered forms of energy are at least partly converted to heat. Chapter 8.2 Vocabulary: F ree Energy: The portion of a biological system’s energy that can perform work when temperature and pressure are uniform throughout the system. (The change in free energy of a system is calculated by the equation G = H – T S, where H is enthalpy [in biological Δ Δ Δ systems, equivalent to total energy], T is absolute temperature, and S is entropy.) Exergonic Reaction: A spontaneous chemical reaction, in which there is a net release of free energy. Endergonic Reaction: A nonspontaneous chemical reaction, in which free energy is absorbed from the surroundings....
View Full Document

This note was uploaded on 08/22/2010 for the course BIOL 1201 taught by Professor Wishtichusen during the Spring '07 term at LSU.

Page1 / 9

CH8 Outline and Vocabulary -...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online