This ppt is about photosynthesis and respiration process .education about environment and plants.

1. Photosynthesis and
Respiration process
Dr. Ramesh Sharma
Lecturer
GBSSS Sundernagar(H.P)

2. What is Photosynthesis?
The process of
photosynthesis is a
chemical reaction.
It is the most important
chemical reaction on
our planet.
Definition – process by
which energy is stored
in chemical bonds of
organic molecules such
as carbohydrates

3. Light Energy Harvested by Plants &
Other Photosynthetic Autotrophs
6 CO2 + 6 H2O + light energy → C6H12O6 + 6 O2

4. Food Chain

5. What is the equation for the
chemical reaction of photosynthesis?
Six molecules of carbon dioxide react with
six molecules of water to form 1 molecule of
glucose and six molecules of oxygen.

6. Chloroplasts
 Photosynthesis
Takes Place inside
these Structures
http://www.wellesley.edu/Biology/Courses/Plant/chloro.html

7.  The location and structure of chloroplasts
LEAF CROSS SECTION MESOPHYLL CELL
LEAF
Chloroplast
Mesophyll
CHLOROPLAST Intermembrane space
Outer
membrane
Inner
membrane
Thylakoid
compartmentThylakoidStroma
Granum
StromaGrana

8. Chloroplasts

9. Photosynthesis Stages
 2-Stage Process
 Light Reactions
 Require Light to Occur
 Involves the Actual Harnessing of Light Energy
 Occur inon the Grana
 Dark Reactions
 Do not Need Light to Occur
 Involve the Creation of the Carbohydrates
 Products of the Light Reaction Are Used to Form C-C
Covalent Bonds of Carbohydrates
 Occur in the Stroma
http://www.daviddarling.info/images/chloroplast.jpg

12.  The Calvin cycle makes
sugar from carbon
dioxide
 ATP generated by the light
reactions provides the energy
for sugar synthesis
 The NADPH produced by the
light reactions provides the
electrons for the reduction of
carbon dioxide to glucose
Light
Chloroplast
Light
reactions
Calvin
cycle
NADP+
ADP
+ P
 The light reactions
convert solar
energy to chemical
energy
 Produce ATP & NADPH
AN OVERVIEW OF PHOTOSYNTHESIS

13. Why is this important to us?
We cannot make our own food (glucose,
energy), we must get our food from plants.
Plants are the first step in the food chain.

14. Respiration
Definition – energy is obtained by a stepwise
breakdown of nutrient molecules
Occurs in plant & animal cells.

15. Chemical equation for cellular
respiration?

16. Describe Cellular Respiration
 The breakdown of glucose molecules to
release energy
 Takes place in all living things
 Is a step by step process

18. RESPIRATIONRESPIRATION
CYTOPLASMCYTOPLASM
GLYCOLOSISGLYCOLOSIS
HAPPENS HERE!HAPPENS HERE!
MITOCHONDRIAMITOCHONDRIA
RESPIRATION HAPPENS INRESPIRATION HAPPENS IN
THIS ORGANELLE!THIS ORGANELLE!
PROTEINSPROTEINS
CARBO’SCARBO’S
(SUGARS)(SUGARS)
AMINOAMINO
ACIDSACIDS
FATSFATS
(LIPIDS)(LIPIDS)
GLUCOSEGLUCOSE
CC66HH1212OO66
ACETYL-CoAACETYL-CoA
PYRUVICPYRUVIC
ACIDACID
GLYCOLOSISGLYCOLOSIS
IN CYTOPLASMIN CYTOPLASM
NO OXYGEN!NO OXYGEN!
KREBS CYCLEKREBS CYCLE
ANDAND
ELECTRONELECTRON
TANSPORTTANSPORT
MAKESMAKES
34 ATPS34 ATPS
MAKESMAKES
2 ATPS2 ATPS
OO22 ENTERSENTERS
HEREHERE
COCO22 ISIS
RELEASEDRELEASED
ATP TOTALSATP TOTALS
GLYCOLOSIS=2GLYCOLOSIS=2
RESPIRATION=34RESPIRATION=34
BOTH=36!BOTH=36!

19. Overview of photosynthesisOverview of photosynthesis
and respirationand respiration
PHOTOSYNTHESISPHOTOSYNTHESIS CELLCELL
ACTIVITIESACTIVITIES
RESPIRATIONRESPIRATION
SUNSUN
RADIANTRADIANT
ENERGYENERGY
GLUCOSEGLUCOSE ATP(ENERGY)ATP(ENERGY)

20. Connections!