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Lecture 8 - Respiration. Dispersed as heat. Dispersed as light. Dispersed as ashes. Energy concentrated in wood. Energy dispersed as heat and light. Stop iiiiiiTT!. Burning. Respiration. glucose. glucose. Energy = heat & light. Energy = heat & ATP.

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Presentation Transcript
slide1

Lecture 8 - Respiration

Dispersed as heat

Dispersed as light

Dispersed as ashes

Energy concentrated in wood

slide3

Stop iiiiiiTT!

Burning

Respiration

glucose

glucose

Energy = heat & light

Energy = heat & ATP

slide4

Metabolism – all chemical reactions in cell

Catabolism – breakdown of large to smaller molecules

Anabolism – synthesis of larger molecules from smaller molecules

slide5

Monomers

Anabolism

Catabolism

Polymer

slide7

Adenosine triphosphate = ATP

A-P~P~P = ATP

High energy bond used to do work in cells

From Saunders College Publishing

slide8

Average adult human produces and utilizes her/his own body weight of ATP per day.

Price of ATP from Sigma Chemical Company is $20.00 per gram

For 70 kg (131) individual it would cost $1,400,000 to purchase that amount of ATP for one day’s worth of ATP

slide9

Cell has 1 second supply of ATP

10,000,000 ATPs used and made per second per cell

slide10

Cellular Respiration (Aerobic breakdown of glucose)

Glucose, C6H12O6 + O2

CO2 + H2O + 36 (net) ATPs + Heat

slide11

Respiration releases energy in chemical bonds in glucose

Now what??

Enough energy for 36 ATPs

Glucose

slide12

A-P~P~P

Energy

Breaking of the 3rd bond will liberate energy to do work in cells

slide13

Review

Respiration occurs in the mitochondrion

slide14

Oxidation and Reduction

Oxidation –

chemical reactions that give up electrons

Reduction –

chemical reactions that accept electrons

Oxidation and Reduction

A. Oxidation – chemical reactions that give up electrons

B. Reduction – chemical reactions that accept electrons

slide15

Oxidation and Reduction

oxidized

Na+

Na

(sodium)

e-

Let me at him

Cl

(chloride)

Cl-

reduced

slide16

Heat

100oC

80oC

90oC

70oC

Review

60oC

50oC

slide17

“Hot”

4 H atoms (from glucose) = 4 (+) and 4 (-)

4(-)

(-)

Electron Transport System = Oxidation and Reduction

4H+

Heat

ATP

2H2O

“cool”

+

O24-

O2

+

4(-)

slide18

Heat

100oC

80oC

90oC

70oC

Review

60oC

50oC

slide19

Glucose

Lactic Acid

w/o O2

+ O2

In muscles

Anaerobic metabolism – 2 ATPs

Fermentation in yeast

Ethanol and CO2

Aerobic metabolism 36 ATPs