1. living things need energy to survive and function. you get the energy you need from the food you...

50
1 1

Upload: geoffrey-wade

Post on 19-Jan-2016

223 views

Category:

Documents


4 download

TRANSCRIPT

Page 1: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

11

Page 2: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

•Living things need energy Living things need energy to survive and function.to survive and function.

•You get the energy you You get the energy you need from the food you eat.need from the food you eat.

•Where does that energy Where does that energy come from?come from?

•Sun Sun Plants Plants You !!! You !!!

22

Page 3: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

• You must eat food to get You must eat food to get energy (you are a energy (you are a heterotroph).heterotroph).– When you breakdown When you breakdown

your food you store the your food you store the energy in the bonds of energy in the bonds of ATP.ATP.

• Plants can make their Plants can make their own food (they are own food (they are autotrophs).autotrophs).– Plants store sunlight Plants store sunlight

energy in the chemical energy in the chemical bonds of glucose (a bonds of glucose (a carbohydrate).carbohydrate).

glucose

ATP 33

Page 4: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

ATP: Energy StorageATP: Energy StorageWHAT IS ATP? WHAT IS ATP? • Universal Energy

Molecule• The cell’s

“Energy Bank”• Adenosine

Triphosphate (ATP)

• Consist of Consist of – a sugar called

ribose– N containing

Adenine– Three phosphate

groups

44

Page 5: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

ATPAdenine Ribose 3 Phosphate groups

55

Page 6: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

When the energy is used theWhen the energy is used the ATP ATP is converted into ADPADP

Partiallychargedbattery

Fullychargedbattery

P

P

ADPADP ATPATP

CLIP

The Bonds between the phosphate groups in ATP are VERY HIGH ENERGY.When a phosphate group is removed-energy is released

66

Page 7: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Using ATP in Active Transport Animation

77

Page 8: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

ATP• Cell can make

ATP from ADP by using the energy from carbohydrates.

• This means that the energy in carbohydrates is then stored in ATP until needed by cells.

Breaking down Carbohydrates releases energy

ADPATP

Energy from the Carbohydrates is stored

in ATP!!!

88

Page 9: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

CLIP

. ATP is the major energy link between energy-using and energy releasing

reactions.

99

Page 10: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

glucose

Trapping Energy 1010

Clip

Page 11: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

•Use– sunlight, carbon

dioxide & water

•Produce – high energy high energy

carbohydratescarbohydrates such as sugars (glucose) &starches.

Photosynthesis is the process by which plants:

Plants store sunlight energy

in Glucose!

1111

Clip

Page 12: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Where does Where does photosynthesis photosynthesis take place?take place?

1212

Page 13: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Leaf StructureLeaf StructurePhotosynthesis Location:

The leaves of plants:a.stomatab.cells

StomataCellChloroplast

CO2

Goes in

1313

Page 14: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Section 23-4

Epidermis

Stomata

Guardcells

The Internal Structure of a LeafCO2 enters through the stomata

Chloroplasts

CO2

Goes in

1414

Page 15: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Let’s go look at leaves……

Page 16: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

ChloroplastsChloroplasts are only found in are only found in photosynthetic, eukaryotic cells. photosynthetic, eukaryotic cells.

Using the energy from the sunlight, chloroplasts are able to

formform ATP as well as synthesizing sugars from H20 & CO2.

Chloroplast Structure 1515

Page 17: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

ChloroplastChloroplastOrganelleOrganelle where photosynthesisphotosynthesis takes

place.

Thylakoid

StromaOuter Membrane

Inner Membrane

Chloroplast Structure 1616

Page 18: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants
Page 19: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Chloroplast Picture

1717

Chloroplast Structure

Page 20: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Things to know about Chloroplasts

1. Have a double membranedouble membrane the inner membrane the outer membrane

2. Have their own DNAown DNA this carries the information to make the enzymes

18.118.1

Page 21: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

1. Have a double membranedouble membrane the inner membrane the outer membrane

2. Have their own DNAown DNA this carries the information to make the enzymes 3. Have their own ribosomesown ribosomes more like

the ribosomes of prokaryotes than eukaryotes make their own enzymesmake their own enzymes required for photosynthesis require carbon dioxide and water produce glucose

4. Contain chlorophyllchlorophyll this green chemical (pigment) "traps" sunlight energy

Things to know about Chloroplasts

18.218.2

Pigments are

molecules that absorb light energy

Page 22: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

• Plants absorb certain wavelengths of light.

• Blue and Red.• Pigments are

molecules that absorb light.

• Main pigment is Chlorophyll.

• When they absorb light, they are absorbing EnergyEnergy.

b

a

1919

Page 23: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Photosynthesis: Products Photosynthesis: Products &Reactants&Reactants

CO2 + H2OChloroplast

Light Energy

Glucose & O2

2020

SUNSUN

Page 24: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Formula For Formula For PhotosynthesisPhotosynthesis

•6 _____ + 6 ______ +__________

______ + ______

Reactants

Products

2121

Page 25: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Photosynthesis Takes Place in 2 Steps.

2222

Page 26: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Step 1:Step 1: Light Dependent Light Dependent ReactionReaction. .

– Energy capturedEnergy captured from Sunlight. 

– HH22O is splitO is split into H+, electrons, & Oxygen (O2). 

– The O2 diffuses out of the Chloroplasts.

– MADE:MADE: O2 , ATP & NADPH.

– Takes place:Takes place: Thylakoid

2323The light reaction is the photo part of photosynthesis.

Page 27: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

–The Chemical Energy Stored in ATP and NADPH is used to make Glucose using CO2.

–This is a light independent reaction.

–MADE:MADE: Glucose–Takes place:Takes place: Stroma

Step 2:Step 2: Light IndependentIndependent Reaction (CALVIN CYCLE).

2424

Sunlight Water

Oxygen

The Calvin cycle is the synthesis part of photosynthesis.

ATP

NADPH

Step 1:Step 1: Light Dependent Light Dependent ReactionReaction

This process is known as carbon

fixation.

Page 28: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Chloroplast

Water

O2

Sugars

CO2

Light-Dependent Reactions

CalvinCycle

NADPH

ATP

ADP + PNADP+Chloroplast

Section 8-3

Photosynthesis: An Overview

Go to Section:

LIGHT REACTION DARK REACTION-Light Independent

Thylakoid Membrane Stroma

2525

SUNLIGHTSUNLIGHT

Page 29: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Photosynthesis

Occurs in two Occurs in two StepsSteps

Light dependent Reaction

Dark Reaction/

Calvin Cycle

Oxygen

ATP

NADPH

Thylakoid

Membrane

Glucose Stroma

Produces

Produces

Occurs (location)

2626

Occurs (location)

6CO2 + 6H2O + energy from sunlight → C6H12O6 + 6O2

Page 30: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

PLANTS STORE ENERGY FROM

THE SUN IN THE BONDS OF GLUCOSE GLUCOSE !!!!

CLI

P 2727

Page 31: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Where does each reactant enter the

plant??? 2828

Page 32: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

•Once plants use light energy to form carbohydrates, other organisms, called Heterotrophs, can then use this carbohydrate energy for their own life processes.

•One way carbohydrate energy is used by organisms is through the process of cellular respiration.

Sun Sun Plants Plants You!! You!!2929

Page 33: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Major Conce

ptHow it’s

all connecte

d.

Page 34: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Cellular Respiration

30

Page 35: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Cellular RespiratioCellular Respirationn

• Process that occurs in cells in which cells break down Glucose for ENERGY!

• Occurs in cytoplasm and Mitochondria. 

31

Breaking down food for energy.

Page 36: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Cellular Respiration Cellular Respiration Overview:Overview:

• Plants are producers and make glucose by the process of photosynthesis.

• Heterotrophs breakdown glucose for energy.

• There are two important ways a cell can harvest energy from food: fermentation fermentation and cellular respiration. and cellular respiration.

32

Breaking down food for energy.

36

Page 37: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Cellular Respiration Takes Place in 3 Steps3 Steps.

Step 1: GlycolysisStep 1: GlycolysisStep 2: Krebs CycleStep 2: Krebs CycleStep 3: Electron TransportStep 3: Electron Transport

33

Page 38: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Step 1: GlycolysisStep 1: Glycolysis• Means “Means “Splitting Splitting

GlucoseGlucose””

•GlycolysisGlycolysis starts with starts with GlucoseGlucose..

34

–Glucose is broken downGlucose is broken down into 2 molecules into 2 molecules calledcalled Pyruvate Pyruvate (aka pyruvic acid(aka pyruvic acid )..

–Happens in theHappens in the CytoplasmCytoplasm..–ClipClip•Glycolysis does not

need oxygen!

Page 39: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Mitochondria AnatomyMitochondria Anatomy

35

Steps 2 & 3 Occur in the Mitochondria 2 membranesOwn ribosomesOwn DNA

Page 40: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants
Page 41: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

In the presence of Oxygen:In the presence of Oxygen:Step 2:Step 2: Krebs CycleStep 3:Step 3: Electron Transport• Happens in the

MitochondriaMitochondria• Starts with PyruvatePyruvate.

• Pyruvate moves into the mitochondria and is broken down into

COCO22,,HH22OO && ATPATP.

36

Page 42: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

37

Page 43: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Glucose

Glycolysis Krebs cycle

Electrontransport

Fermentation (without oxygen)

Alcohol or lactic acid

Cellular Respiration Review

Go to Section:

With oxygen

38

36

Page 44: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Glucose

Glycolysis Krebs cycle

Electrontransport

Fermentation (without oxygen)

Alcohol or lactic acid

Breaking down glucose without oxygen

Go to Section:

With out oxygen

39

EthanolandCarbon Dioxide

Lactic AcidPyruvic Acid

Page 45: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Fermentation• Without oxygen:Without oxygen: Pyruvate is

converted into Lactic AcidLactic Acid or AlcoholAlcohol during Fermentation.

• Lactic Acid- Muscle cells• Alcohol- Yeast

40

Page 46: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

• In the presence of oxygen:

1 Glucose is converted into 36 ATP.

• Without oxygen:

1 Glucose is converted into 2 ATP.

41

C6H12O6 + 6 O2 => 6 CO2 + 6 H2O + 36 ATP

Page 47: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

42

Page 48: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

Photosynthesis Respiration

•produces food •stores energy •Uses H2O•uses CO2 •releases O2

•occurs in sunlight

•uses food •releases energy •Produces H2O•produces CO2 •uses O2

•occurs in the dark as well as light

Photosynthesis vs. RespirationPhotosynthesis vs. Respiration43

Page 49: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

4444Energy Converters video. Click picture.

Page 50: 1. Living things need energy to survive and function. You get the energy you need from the food you eat. Where does that energy come from? Sun  Plants

• Photosynthesis “they might be giants”