Chapter 5

Chapter 5 - Chapter 5 Energy Flow in the Life of a Cell Phenylketonuria(PKU o Discovered in 1934 by Asbjorn Folling o Cannot fully digest the amino

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 5: Energy Flow in the Life of a Cell Phenylketonuria (PKU)  o Discovered in 1934 by Asbjorn Folling o Cannot fully digest the amino acid phenylalanine and it builds up in the  blood to a toxic level to developing nervous systems What is energy? The capacity to do work Two types: o Potential stored energy in the form of  Chemical bonds Positional energy o Kinetic energy of movement Light—movement of photons Heat—movement of molecules Electricity—movement of electrically charged particles Movement of large objects Laws of thermodynamics: Energy cannot be created nor destroyed but can be transformed into a different  kind of energy (conservation of energy) When energy is converted into another form, the amount in a useful form is  decreased (conversion is not 100% efficient) o Converted from more useful to less useful forms o Processes that proceed spontaneously lead to increasing randomness  and disorder (entrophy) When energy is converted into another form, the new form is less organized than  the original form (entropy increases) The original source of energy for life on Earth
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/21/2008 for the course BIO 101 taught by Professor Bitch(ifyougotomeredithyouknowwhoi'mtalkingabout) during the Spring '08 term at Meredith.

Page1 / 5

Chapter 5 - Chapter 5 Energy Flow in the Life of a Cell Phenylketonuria(PKU o Discovered in 1934 by Asbjorn Folling o Cannot fully digest the amino

This preview shows document pages 1 - 2. Sign up to view the full document.

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