Lecture 9_Energetics_iClicker

Lecture 9_Energetics_iClicker - Lecture#9 Energe.cs Reading...

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

View Full Document Right Arrow Icon
Lecture’#9:’ Energe.cs’ Reading: Chapter 9, pp. 163-169 Lecture outline: Cellular respira<on Enzyme inhibitors – recap Redox reac<ons Electron transport chain Glycolysis
Background image of page 1

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

View Full Document Right Arrow Icon
Enzyme’inhibitors’ Compe. .ve : binds to substrate binding site Non-compe. .ve : binds to the enzyme at a site dis<nct from the substrate binding site Uncompe. .ve : binds to the E ± S complex Type of inhibi<on can be determined by determining enzyme kine<cs as a func<on of inhibitor concentra<on
Background image of page 2
Allosteric’efectors’ Allosteric’inhibitors : bind to one site or subunit in a protein complex or enzyme complex, inhibit ac<vity of other subunits Allosteric’ac.vators : bind to one site or subunit in a protein complex or enzyme complex, enhance ac<vity of other subunits
Background image of page 3

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

View Full Document Right Arrow Icon
Coopera.vity’ is a form of allosteric regula<on that can amplify enzyme ac<vity In coopera<vity, binding by a substrate to one ac<ve site stabilizes favorable conforma<onal changes at all other subunits
Background image of page 4
Overview:’Life’Is’Work’ Living cells require energy from outside sources Some animals, such as the giant panda, obtain energy by ea<ng plants, and some animals feed on other organisms that eat plants
Background image of page 5

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

View Full Document Right Arrow Icon
Light’ energy ECOSYSTEM Photosynthesis’ ’in’chloroplasts CO 2 ’+’H 2 O Cellular’respira.on’ in’mitochondria Organic’ molecules +’O 2 ATP’powers’most’cellular’work Heat’ energy ATP Energy flows into an ecosystem as sunlight and leaves as heat Photosynthesis generates O 2 and organic molecules, which are used in cellular respira<on Cells use chemical energy stored in organic molecules to regenerate ATP, which powers work
Background image of page 6
Catabolic’Pathways’and’Produc.on’of’ATP’ The breakdown of organic molecules is exergonic Fermenta.on’ is a par<al degrada<on of sugars that occurs without O 2 Aerobic’respira.on’ consumes organic molecules and O 2 and yields ATP Anaerobic’respira.on’ is similar to aerobic respira<on but consumes compounds other than O 2
Background image of page 7

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

View Full Document Right Arrow Icon
Redox’Reac.ons:’Oxida.on’and’ Reduc.on’ The transfer of electrons during chemical reac<ons releases energy stored in organic molecules This released energy is ul<mately used to synthesize ATP
Background image of page 8
The Principle of Redox Chemical reac<ons that transfer electrons between reactants are called oxida<on-reduc<on
Background image of page 9

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

View Full Document Right Arrow Icon
Image of page 10
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 3

Lecture 9_Energetics_iClicker - Lecture#9 Energe.cs Reading...

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