ch05_lecture - Chapter5 Catalase 2H2O2>2H2O O2 WhatisEnergy...

Info iconThis preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
Ground Rules of Metabolism Chapter 5
Background image of page 1

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

View Full DocumentRight Arrow Icon
Catalase* Catalyzes the formation of oxygen  and water from hydrogen peroxide 2H 2 O 2  ----------> 2H 2 O + O 2
Background image of page 2
What is Energy?* Capacity to do work Forms of energy Potential energy Kinetic energy Chemical energy
Background image of page 3

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

View Full DocumentRight Arrow Icon
What Can Cells Do  with Energy?* Energy inputs become coupled to  energy-requiring processes Cells use energy for: Chemical work Mechanical work Electrochemical work
Background image of page 4
First Law of Thermodynamics* The total amount of energy in the universe  remains constant Energy can undergo conversions from one  form to another, but it cannot be created or  destroyed
Background image of page 5

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

View Full DocumentRight Arrow Icon
One-Way Flow of Energy* The sun is life’s primary energy source Producers trap energy from the sun and  convert it into chemical bond energy All   organisms use the energy stored in the  bonds of organic compounds to do work 
Background image of page 6
Entropy* Measure of degree of disorder in a system The world of life can resist the flow toward  maximum entropy only because it is  resupplied with energy from the sun
Background image of page 7

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

View Full DocumentRight Arrow Icon
Cellular Work* Energy changes in cells tend to  run spontaneously in the direction that  results in a decrease in usable energy  
Background image of page 8
Endergonic Reactions* Energy input  required Product has more  energy than starting  substances product with more energy (plus by-products 60 2 and 6H 2 O) ENERGY IN 6 12
Background image of page 9

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

View Full DocumentRight Arrow Icon
Energy is  released Products have 
Background image of page 10
Image of page 11
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/23/2011 for the course BIO 101 taught by Professor Nchowdhury during the Spring '11 term at BRAC University.

Page1 / 33

ch05_lecture - Chapter5 Catalase 2H2O2>2H2O O2 WhatisEnergy...

This preview shows document pages 1 - 11. Sign up to view the full document.

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