photosynthesis and cell respiration
DESCRIPTION
Photosynthesis and Cell Respiration. Dra. Paulina Trigo Espejel Life Sciences TEC-CEM Sep. 2011. Remember ?. Ability to generate work. Remember again ?. ¿ Why is energy stored ?. Autotrophs. Heterotrophs. Which fuel do living beings use?. Adenosine. Ribose. Phosphate Groups. - PowerPoint PPT PresentationTRANSCRIPT
Photosynthesis and Cell Respiration
Dra. Paulina Trigo Espejel
Life Sciences
TEC-CEM
Sep. 2011
Remember?Ability to generate
work
Remember again?Autotrophs
Heterotrophs
¿Why is energy stored?
Which fuel do living beings use?
Adenosine Ribose Phosphate Groups
ATP is used for active membrane transport
ADP &ATP are like the
batteries of the cell.
Research!
• Find other activities in which ATP is required. Write as many as you can on this class summary.
Photo what?
Photosynthesis
Process
Autotrophs
+ CO2 + H2O = Energy + O2
Remember carbohydrate
functions?
* On your book look for the general formula for photosyntesis.
What does photosynthesis needs?
• Water• CO2• Light • chlorophyll-------- Chloroplasts
Pigments: Do you know any other pigment?
A Chloroplast?!!!!¨*¨¨¨¨
• Where photosynthesis takes place• Cointains tilakoids which organize photosystems. • They also contain chlorophyll
Nambe the parts of the chloroplast.
How does photosyntesis takes place?
Photosynthesis
includes
from
Takes place inTakes place uses
produce produce
uses
Light depndentreactions
Calvin Cycle
membranes Stroma NADPHATPSolar
ATP NADPH O2 Chloroplasts High energyCH’s
NADP?
• Try to say it’s name very fast
Transports two
electrons and a
hydrogen
High energy!
NADPH
This can free energy obtained from NADP.
Wasn´t there a light dependent reaction????
Describe what happens in each step.
Mention the differences between
photosystems I and II
Which was the one that didn´t require light?
CO2 Enters the cycleEnergy enters
New 6 carbonmolecules
Carbohydrates
A 6 carbon sugar is produced
Also called Calvin Cycle
Calories make you fat?
• A calorie is the energy requiered to heat 1 g of water 1 oC
Calories in food labels are referred as a C this actually means
kilocalories.
Just for fun check the labels on what you eat and try to figure out how many calories you eat.
How do human beings get energy?
Glucose
Glucolysis Krebs
Electron(transport)
FermentationAlcohol or
Lactic acid
What would happen if instead of freeing energy in a controlled way it was released sudedenly and uncontrolled?
Gluco…what????....
Gluco Lysis6 carbons sugar Divide, destroy
This process consumes 2 ATP’s
but produces 4.
It also produces NADH
Krebs Cycle (citric acid)
Electron transport chain
Electron TransportHydrogen Ion Movement
ATP Production
ATP synthase
Channel
No oxygen!!!!
Sportsmen produce large amounts of
lactic acid, research and find out how the
eliminate it.