CTools020211lecture11

CTools020211lecture11 - Lecture 11: Wednesday, February 2,...

Info iconThis preview shows pages 1–8. 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

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight 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: Lecture 11: Wednesday, February 2, 2011 Biology 172 Todays Outline Announcements No Discussion This Week Exam I : Scores posted on SAMS Key posted on CTools Overview of Metabolism- Metabolic Lifestyles- Key Energy Carriers- Chemical Background Cellular Metabolism- Overview - Glycolysis- Fermentation Metabolism the sum of all chemical interactions in a cell metabolic reactions involve ENERGY EXCHANGE Metabolic Lifestyles Mode of Nutrition Energy source Carbon source Examples Autotroph Photoautotroph Sunlight CO 2 Plants, algae, cyanobacteria Chemoautotroph Inorganic CO 2 Some prokaryotes Heterotroph Photoheterotroph Sunlight Organic compds Some marine prokaryotes Chemohetero- troph Organic compds Organic compds Many prokaryotes & protists, fungi and animals Autotrophs = Producers Heterotrophs = Consumers Heterotrophs Photoautotrophs Two Major Metabolic Lifestyles ATP consists of three phosphate groups, ribose, and adenine. Phosphate groups Ribose Adenine Energy is released when ATP is hydrolyzed. ATP Water ADP Inorganic phosphate Energy Key Energy-Carrying Molecules Figure 9.1 ATP the energy currency of the cell its phosphate bonds are hydrolyzed (RELEASES ENERGY) and regenerated (REQUIRES ENERGY) in metabolism A review of how ATP drives cellular work ATP A B Reactants E n d e r g o n i c r e a c t i o n ( B g a i n s P i f r o m A T P ) E x e r g o n i c r e a c t i o n ( L o s s o f P i f r o m A T P ) A BPi Activated substrate E x e r g o n i c r e a c t i o n ( B l o s s e s P i ) Energy is required to synthesize AB G AB Products Figure 9.3 Exergonic Phosphorylation Reactions are Coupled to Endergonic Reactions Key Energy-Carrying Molecules...
View Full Document

This note was uploaded on 02/13/2012 for the course BIO 172 taught by Professor Clark during the Winter '08 term at University of Michigan.

Page1 / 36

CTools020211lecture11 - Lecture 11: Wednesday, February 2,...

This preview shows document pages 1 - 8. Sign up to view the full document.

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