CH5: Metabolism //Pt1: Intro to Metabolism

Intro to Metabolism. Part One of Chapter 5

metabolism

chemical reaction in body's cells that change food into energy

anabolism

builds; uses energy

catabolism

destroys; uses and produces energy

energy

ability to do work; ability to cause some kind of change

autotroph

make own food using the sun's energy; producers

heterotroph

doesn't make own food, eats others for energy; consumers

trophic levels

an organism's place in the food chain

producers

make their own food

primary consumers

herbivores

secondary consumer

carni-/omnivores that eat herbivores

tertiary consumers

carnivores that eat other carni-/omnivores

quaternary consumers

apex predators

decomposers

decompose dead things

kinetic energy

the energy of motion

potential energy

stored energy related to its position

chemical energy

energy stored in chemical bonds

thermodynamics

the study of heat and other energy forms

laws of thermodynamics

characteristics we see with energy

first law of thermodynamics

energy can't be created or destroyed

second law of thermodynamics

energy tends to disperse

biochemical reactions

molecules changing into other molecules

reactants

molecules that enter a reaction to be changed

products

molecules produced by a reaction

exergonic

energy releasing; spontaneous

endergonic

energy consuming; need energy

activation energy

minimum amount of energy needed to produce a chemical reaction