2.3 Energy for Life

Catalyst

• speeds up chemical reactions

• slows down chemical reactions

• material enzymes act on

• results of the substrate and the enzymes binding together

active site

• Product of chemical reaction

• speeds up chemical reactions

• location on an enzyme specific to substrate

  "lock and key"

• when the enzyme loses its shape and becomes ineffective

substrate

• activation site

• material enzyme operates on

• product of reaction

• location on an enzyme specific to a substrate

reactants

• speeds up physical reactions

• production site

• material substrate acts on

• molecule consumed

molecule consumed

• active site

• reactants

• substrate

• chemical reaction

what biomolecule does enzymes belong to?

• none

• proteins

• carbohydrates

• DNA

product

• catalyst

• when the enzyme loses its shape and becomes ineffective

• chemical reactions plummet when they get to high

• results of the substrate and the enzymes binding together

denature

• when the enzyme increases and is at its highest point

• when the enzyme "falls apart": loses its shape and becomes ineffective

• when the enzyme suddenly stops

• when the enzymes stays neutral and doesn't do anything

what affects enzymes functions

• catalysts

• temperature

• activation energy

• pH

enzymes are __________that speed up the rate of ___________ __________ that would otherwise happen more slowly