Photosynthesis

Июль 31, 2022

Содержание

2. Why is Photosynthesis important? Makes organic molecules (glucose) out of inorganic materials (carbon dioxide and water).
3. Photosynthesis-starts to ecological food webs!
4. Plants use sunlight to turn water and carbon dioxide into glucose. Glucose is a kind of
5. How do we know that plants make carbohydrates from just carbon dioxide water and light energy?
6. Photosynthesis Carbon dioxide + water glucose + oxygen sunlight absorbed by chlorophyll 6CO2 + 6H2O +
7. Check it! Plants in Action What is the process that uses the sun’s energy to make
8. Plant leaves have many types of cells!
9. Plant Cells
10. The photograph below is an elodea leaf X 400. Individual cells are clearly visible. The tiny
11. Chloroplasts make the sugars!
12. Plants Leaves are green because they contain the pigment: chlorophyll Leaves have a large surface area
13. Chloroplasts make the oxygen too!
14. Stoma This opening how plants exchange gases! Check it! Can you name the two important gases
15. PHOTOSYNTHESIS Absorbing Light Energy to make chemical energy: glucose! Pigments: Absorb different colors of white light
16. PHOTOSYNTHESIS Why do we see green? Green color from white light reflected NOT absorbed Chloroplast: organelle
17. Visible light is only a small part of the electromagnetic spectrum (all forms of light).
18. LIGHT behaves as if it were composed of "units" or "packets" of energy that travel in
20. Chlorophyll: A Light Absorbing Pigment The Solar Panel Chemical!
22. Photosynthesis
23. Oxygen and Sugar!
24. In plants and simple animals, waste products are removed by diffusion. Plants, for example, excrete O2,
25. EQUATION FOR PHOTOSYNTHESIS 6CO2 + 6H2O + ENERGY C6H12O6 + 6O2 CARBON DIOXIDE WATER GLUCOSE OXYGEN
26. The end!
27. PHOTOSYNTHESIS 2 Phases Light-dependent reaction Light-independent reaction Light-dependent: converts light energy into chemical energy; produces ATP
28. PHOTOSYNTHESIS Light-dependent reaction (LIGHT Reaction) Requires light Occurs in chloroplast (in thylakoids) Chlorophyll (thylakoid) traps energy
29. PHOTOSYNTHESIS Light-dependent reaction (LIGHT Reaction) Energy lost along electron transport chain Lost energy used to recharge
30. PHOTOSYNTHESIS How did we get O2 as a byproduct?! Photolysis: replaces lost electrons by splitting water
31. Sun Chlorophyll passes energy down through the electron transport chain. for the use in light-independent reactions
32. PHOTOSYNTHESIS Light-independent reaction (Dark Reaction) Does not require light Calvin Cycle Occurs in stroma of chloroplast
34. PHOTOSYNTHESIS What affects photosynthesis? Light intensity: as light increases, rate of photosynthesis increases
35. PHOTOSYNTHESIS What affects photosynthesis? Carbon Dioxide: As CO2 increases, rate of photosynthesis increases
36. PHOTOSYNTHESIS What affects photosynthesis? Temperature: Temperature Low = Rate of photosynthesis low Temperature Increases = Rate
37. Check it! The process that uses the sun’s energy to make simple sugars is _____________. Cellular
38. Check it! The function accomplished by the light-dependent reactions is ______________. Energy storage Sugar production Carbon
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Слайд 2

Why is Photosynthesis important?
Makes organic molecules (glucose) out of inorganic materials

(carbon dioxide and water).
It begins all food chains/webs. Thus all life is supported by this process.
It also makes oxygen gas!!

Слайд 3

Photosynthesis-starts to ecological food webs!

Слайд 4

Plants use sunlight to turn water and carbon dioxide into glucose.

Glucose is a kind of sugar.
Plants use glucose as food for energy and as a building block for growing.
Autotrophs make glucose and heterotrophs are consumers of it.

Photo-synthesis

means "putting together with light."

Слайд 5

How do we know that plants make carbohydrates from just carbon

dioxide water and light energy?

For example:
Jan Baptisa van Helmont (1648) planted a willow branch weighing 5 pounds into 200 pounds of soil and then after 4 years the tree weighed 169 lbs. and the soil was still nearly 200 lbs.

Experiments!

Слайд 6

Photosynthesis
Carbon dioxide + water glucose + oxygen
sunlight
absorbed by chlorophyll
6CO2 + 6H2O

+ energy → C6H12O6 + 6O2

Слайд 7

Check it!
Plants in Action
What is the process that uses the sun’s

energy to make simple sugars?

Слайд 8

Plant leaves have many types of cells!

Слайд 9

Plant Cells

Слайд 10

The photograph below is an elodea leaf X 400. Individual cells

are clearly visible. The tiny green structures within the cells are chloroplasts this is where photosynthesis happens.

Слайд 11

Chloroplasts make the sugars!

Слайд 12

Plants
Leaves are green because they contain
the pigment:
chlorophyll
Leaves have a large surface

area to absorb as much light as possible

"Thanks for the Glucose!"

Слайд 13

Chloroplasts make the oxygen too!

Слайд 14

Stoma This opening how plants exchange gases! Check it! Can you name the

two important gases that go in and out of the leaves?

Why are the stomata located on the underside of leaves?

Слайд 15

PHOTOSYNTHESIS
Absorbing Light Energy to make chemical energy: glucose!
Pigments: Absorb different colors

of white light (ROY G BIV)
Main pigment: Chlorophyll a
Accessory pigments: Chlorophyll b and Carotenoids
These pigments absorb all wavelengths (light) BUT green!

Слайд 16

PHOTOSYNTHESIS
Why do we see green?
Green color from white light reflected

NOT absorbed
Chloroplast: organelle responsible for photosynthesis
Chlorophyll: located within Chloroplast
Green pigment

Слайд 17

Visible light is only a small part of the electromagnetic spectrum

(all forms of light).

Слайд 18

LIGHT behaves as if it were composed of "units" or "packets"

of energy that travel in waves. These packets are photons.
The wavelength of light determines its color.

Слайд 19

Слайд 20

Chlorophyll: A Light Absorbing Pigment
The Solar Panel Chemical!

Слайд 21

Слайд 22

Photosynthesis

Слайд 23

Oxygen and Sugar!

Слайд 24

In plants and simple animals, waste products are removed by diffusion.

Plants, for example, excrete O2, a product of photosynthesis.

Слайд 25

EQUATION FOR PHOTOSYNTHESIS
6CO2 +
6H2O +
ENERGY
C6H12O6 +
6O2
CARBON DIOXIDE
WATER
GLUCOSE
OXYGEN

Слайд 26

The end!

Слайд 27

PHOTOSYNTHESIS
2 Phases
Light-dependent reaction
Light-independent reaction
Light-dependent: converts light energy into chemical energy; produces

ATP molecules to be used to fuel light-independent reaction
Light-independent: uses ATP produced to make simple sugars.

Слайд 28

PHOTOSYNTHESIS
Light-dependent reaction (LIGHT Reaction)
Requires light
Occurs in chloroplast (in thylakoids)
Chlorophyll (thylakoid) traps

energy from light
Light excites electron (e-)
Kicks e- out of chlorophyll to an electron transport chain
Electron transport chain: series of proteins in thylakoid membrane
Bucket brigade

Слайд 29

PHOTOSYNTHESIS
Light-dependent reaction (LIGHT Reaction)
Energy lost along electron transport chain
Lost energy used

to recharge ATP from ADP
NADPH produced from e- transport chain
Stores energy until transfer to stroma
Plays important role in light-independent reaction
Total byproducts: ATP, NADP, O2

Слайд 30

PHOTOSYNTHESIS
How did we get O2 as a byproduct?!
Photolysis: replaces lost electrons

by splitting water

Слайд 31

Sun
Chlorophyll passes energy down through the electron transport chain.
for the

use in light-independent reactions

bonds

to ADP

forming ATP

oxygen
released

splits
H2O

H+

NADP+

NADPH

Light energy transfers to chlorophyll.

Energized electrons provide energy that

At each step along the transport chain, the electrons lose energy.

Слайд 32

PHOTOSYNTHESIS
Light-independent reaction (Dark Reaction)
Does not require light
Calvin Cycle
Occurs in stroma of

chloroplast
Requires CO2
Uses ATP and NADPH as fuel to run
Makes glucose sugar from CO2 and Hydrogen

Слайд 33

Слайд 34

PHOTOSYNTHESIS
What affects photosynthesis?
Light intensity: as light increases, rate of photosynthesis increases

Слайд 35

PHOTOSYNTHESIS
What affects photosynthesis?
Carbon Dioxide: As CO2 increases, rate of photosynthesis increases

Слайд 36

PHOTOSYNTHESIS
What affects photosynthesis?
Temperature:
Temperature Low = Rate of photosynthesis low
Temperature Increases

= Rate of photosynthesis increases
If temperature too hot, rate drops

Слайд 37

Check it!
The process that uses the sun’s energy to make simple

sugars is _____________.
Cellular respiration
Glycolysis
Photosynthesis
Photolysis

Слайд 38

Check it!
The function accomplished by the light-dependent reactions is ______________.
Energy storage
Sugar

production
Carbon fixation
Conversion of sugar

Photosynthesis

Содержание

Why is Photosynthesis important?Makes organic molecules (glucose) out of inorganic materials

Photosynthesis-starts to ecological food webs!

Plants use sunlight to turn water and carbon dioxide into glucose.

How do we know that plants make carbohydrates from just carbon

PhotosynthesisCarbon dioxide + water glucose + oxygensunlightabsorbed by chlorophyll6CO2 + 6H2O

Check it!Plants in ActionWhat is the process that uses the sun’s

Plant leaves have many types of cells!

Plant Cells

The photograph below is an elodea leaf X 400. Individual cells

Chloroplasts make the sugars!

PlantsLeaves are green because they containthe pigment:chlorophyllLeaves have a large surface

Chloroplasts make the oxygen too!

Stoma This opening how plants exchange gases! Check it! Can you name the

PHOTOSYNTHESISAbsorbing Light Energy to make chemical energy: glucose!Pigments: Absorb different colors

PHOTOSYNTHESISWhy do we see green? Green color from white light reflected

Visible light is only a small part of the electromagnetic spectrum

LIGHT behaves as if it were composed of "units" or "packets"

Chlorophyll: A Light Absorbing PigmentThe Solar Panel Chemical!

Photosynthesis

Oxygen and Sugar!

In plants and simple animals, waste products are removed by diffusion.

EQUATION FOR PHOTOSYNTHESIS6CO2 +6H2O +ENERGYC6H12O6 +6O2 CARBON DIOXIDEWATERGLUCOSEOXYGEN

The end!

PHOTOSYNTHESIS2 PhasesLight-dependent reactionLight-independent reactionLight-dependent: converts light energy into chemical energy; produces

PHOTOSYNTHESISLight-dependent reaction (LIGHT Reaction)Requires lightOccurs in chloroplast (in thylakoids)Chlorophyll (thylakoid) traps

PHOTOSYNTHESISLight-dependent reaction (LIGHT Reaction)Energy lost along electron transport chainLost energy used

PHOTOSYNTHESISHow did we get O2 as a byproduct?!Photolysis: replaces lost electrons

SunChlorophyll passes energy down through the electron transport chain. for the

PHOTOSYNTHESISLight-independent reaction (Dark Reaction)Does not require lightCalvin CycleOccurs in stroma of

PHOTOSYNTHESISWhat affects photosynthesis?Light intensity: as light increases, rate of photosynthesis increases

PHOTOSYNTHESISWhat affects photosynthesis?Carbon Dioxide: As CO2 increases, rate of photosynthesis increases

PHOTOSYNTHESISWhat affects photosynthesis?Temperature: Temperature Low = Rate of photosynthesis lowTemperature Increases

Check it!The process that uses the sun’s energy to make simple

Check it!The function accomplished by the light-dependent reactions is ______________.Energy storageSugar

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Why is Photosynthesis important?
Makes organic molecules (glucose) out of inorganic materials

Photosynthesis
Carbon dioxide + water glucose + oxygen
sunlight
absorbed by chlorophyll
6CO2 + 6H2O

Check it!
Plants in Action
What is the process that uses the sun’s

Plants
Leaves are green because they contain
the pigment:
chlorophyll
Leaves have a large surface

PHOTOSYNTHESIS
Absorbing Light Energy to make chemical energy: glucose!
Pigments: Absorb different colors

PHOTOSYNTHESIS
Why do we see green?
Green color from white light reflected

Chlorophyll: A Light Absorbing Pigment
The Solar Panel Chemical!

EQUATION FOR PHOTOSYNTHESIS
6CO2 +
6H2O +
ENERGY
C6H12O6 +
6O2
CARBON DIOXIDE
WATER
GLUCOSE
OXYGEN

PHOTOSYNTHESIS
2 Phases
Light-dependent reaction
Light-independent reaction
Light-dependent: converts light energy into chemical energy; produces

PHOTOSYNTHESIS
Light-dependent reaction (LIGHT Reaction)
Requires light
Occurs in chloroplast (in thylakoids)
Chlorophyll (thylakoid) traps

PHOTOSYNTHESIS
Light-dependent reaction (LIGHT Reaction)
Energy lost along electron transport chain
Lost energy used

PHOTOSYNTHESIS
How did we get O2 as a byproduct?!
Photolysis: replaces lost electrons

Sun
Chlorophyll passes energy down through the electron transport chain.
for the

PHOTOSYNTHESIS
Light-independent reaction (Dark Reaction)
Does not require light
Calvin Cycle
Occurs in stroma of

PHOTOSYNTHESIS
What affects photosynthesis?
Light intensity: as light increases, rate of photosynthesis increases

PHOTOSYNTHESIS
What affects photosynthesis?
Carbon Dioxide: As CO2 increases, rate of photosynthesis increases

PHOTOSYNTHESIS
What affects photosynthesis?
Temperature:
Temperature Low = Rate of photosynthesis low
Temperature Increases

Check it!
The process that uses the sun’s energy to make simple

Check it!
The function accomplished by the light-dependent reactions is ______________.
Energy storage
Sugar