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Situation: the autotrophs have produced sugar and oxygen. Energy 6CO2 + 6H 2 O  C 6 H 12 O 6 + 6O 2 Now – how do we RELEASE the energy in that sugar?. ATP. Need to turn the sugar into ATP is the cell’s energy molecule. What Does ATP Do for You?.

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slide1
Situation: the autotrophs have produced sugar and oxygen.

Energy

6CO2 + 6H2O  C6H12O6 + 6O2

Now – how do we RELEASE the energy in that sugar?

slide2

ATP

  • Need to turn the sugar into
  • ATP is the cell’s energy molecule
what does atp do for you
What Does ATP Do for You?

It supplies YOU withENERGY!

how do we get energy from atp

Adenine

P

P

Adenine

P

P

How Do We Get Energy From ATP?

By breaking the last P – P bond

P

P

how does that happen
How Does That Happen?

An Enzyme!

ATPase

when is atp made in the body
When is ATP Made in the Body?
  • During cellular respiration
  • both plants & animals do it!
question
Question:
  • In what kinds organisms does cellular respiration take place?
what are the stages of cellular respiration
What are the Stages of Cellular Respiration?

In cytoplasm

1. Glycolysis (sugar is split)

In mitochondria:

2. The Krebs Cycle (citric acid cycle)

3. The Electron Transport Chain

slide11

ETC

Krebs Cycle

Glycolysis

step 1 glycolysis
Step 1: Glycolysis

Glucose 2 pyruvic acid

C-C-C-C-C-C C-C-C + C-C-C

  • http://www.northland.cc.mn.us/biology/Biology1111/animations/glycolysis.html
mitochondria
Mitochondria
  • Organellewhere cellular respirationtakes place.
step 2 kreb s cycle
Step 2: Kreb’s Cycle

C-C-C CO2 & a whole bunch of NADHs

http://www.science.smith.edu/departments/Biology/Bio231/krebs.html

electron transport chain
Electron Transport Chain
  • High energy electrons used to convert ADP to ATP
  • http://www.science.smith.edu/departments/Biology/Bio231/etc.html
slide17

CR: 36 NET ATP

Glycolysis

C-C-C-C-C-C

C-C-C

O2

ETC

Krebs Cycle

CO2 + NADH

ATP + H2O

slide18

Animation of CR:qcc.cuny.edu/BiologicalSciences/Faculty/DMeyer/respiration.htmlhttp://scholar.hw.ac.uk/site/biology/activity3.asp

only glycolysis can occur
Only Glycolysis can occur

O2

Glycolysis

C-C-C-C-C-C

C-C-C

ETC

Krebs Cycle

fermentation
Fermentation

Occurs when O2isNOTpresent

AKA anaerobic respiration

Two types:

Lactic Acid fermentation(muscle cells)

Alcoholic fermentation(yeast)

  • Nets only 2 ATP (instead of 36)
lactic acid fermentation
Lactic Acid Fermentation
  • Animals (pain in muscle after workout)

C

C

C

C

CC

C

C

C

C

C

C

Glycolysis

Pyruvic

acid

Lactic Acid

glucose

alcohol fermentation
Alcohol Fermentation
  • Plants and Fungi  beer and wine

C

C

C

C

CC

C

C

C

C

C

Glycolysis

Pyruvic

acid

Ethanol

glucose

question1
Question:
  • Glucose (carbohydrate) is the main source of food for making ATP from cellular respiration.
  • What other food molecules can be used in Cellular Respiration?
slide26
Other organic molecules used for fuel:

1. Carbohydrates:polysaccharides

2. Fats:glycerols and fatty acids

3. Proteins:amino acids