ch07_lecture - How Cells Release Stored Energy Chapter 7...

Info iconThis preview shows pages 1–10. Sign up to view the full content.

View Full Document Right Arrow Icon
How Cells Release Stored Energy Chapter 7
Background image of page 1

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

View Full DocumentRight Arrow Icon
Producing the Universal Currency of Life* All energy-releasing pathways require characteristic starting materials yield predictable products and by-products produce ATP
Background image of page 2
Photosynthesizers get energy from the sun Animals get energy second- or third- hand from plants or other organisms Regardless, the energy is converted to the chemical bond energy of ATP ATP Is Universal* Energy Source
Background image of page 3

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

View Full DocumentRight Arrow Icon
Making ATP* Plants make ATP during photosynthesis Cells of all organisms make ATP by breaking down carbohydrates, fats, and protein
Background image of page 4
Main Types of Energy-Releasing Pathways* Aerobic pathways Evolved later Require oxygen Start with glycolysis in cytoplasm Completed in mitochondria Anaerobic pathways Evolved first Don’t require oxygen Start with glycolysis in cytoplasm Completed in cytoplasm
Background image of page 5

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

View Full DocumentRight Arrow Icon
Main Pathways Start with Glycolysis* Glycolysis occurs in cytoplasm Reactions are catalyzed by enzymes Glucose 2 Pyruvate (six carbons) (three carbons)
Background image of page 6
Overview of Aerobic Respiration* C 6 H 12 0 6 + 6O 2 6CO 2 + 6H 2 0 glucose oxygen carbon water dioxide
Background image of page 7

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

View Full DocumentRight Arrow Icon
Overview of Aerobic Respiration* CYTOPLASM MITOCHONDRION GLYCOLYSIS ELECTRON TRANSPORT PHOSPHORYLATION KREBS CYCLE ATP ATP energy input to start reactions 2 CO 2 4 CO 2 2 32 water 2 NADH 8 NADH 2 FADH 2 2 NADH 2 pyruvate e - + H + e - + oxygen (2 ATP net) glucose TYPICAL ENERGY YIELD: 36 ATP e - e - + H + e - + H + ATP H + e - + H +
Background image of page 8
Glycolysis Occurs in Two Stages* Energy-requiring steps ATP energy activates glucose and its six- carbon derivatives Energy-releasing steps The products of the first part are split into three-carbon pyruvate molecules ATP and NADH form
Background image of page 9

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

View Full DocumentRight Arrow Icon
Image of page 10
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

ch07_lecture - How Cells Release Stored Energy Chapter 7...

This preview shows document pages 1 - 10. Sign up to view the full document.

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