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Energy Energy in the in the Cell Cell

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Page 1: Energy in the Cell. Energy Energy- the ability to do work or cause change Energy- the ability to do work or cause change All energy in living things is

Energy in Energy in the Cellthe Cell

Page 2: Energy in the Cell. Energy Energy- the ability to do work or cause change Energy- the ability to do work or cause change All energy in living things is

EnergyEnergy Energy-Energy- the ability to do work or the ability to do work or

cause changecause change

All energy in living things is as All energy in living things is as chemical compoundschemical compounds

Main energy source = THE SUNMain energy source = THE SUN

Page 3: Energy in the Cell. Energy Energy- the ability to do work or cause change Energy- the ability to do work or cause change All energy in living things is

Where Does Energy Come From?Where Does Energy Come From?

Energy is stored in food!!!Energy is stored in food!!!

PlantsPlants are are autotrophsautotrophs——they make their they make their ownown food from sunlight. food from sunlight.

AnimalsAnimals are are heterotrophsheterotrophs- cannot make - cannot make their own food, must their own food, must eateat food for energy. food for energy.

Page 4: Energy in the Cell. Energy Energy- the ability to do work or cause change Energy- the ability to do work or cause change All energy in living things is

Chemical EnergyChemical Energy

3 main chemical compounds for energy:3 main chemical compounds for energy:

ATPATP (adenosine (adenosine tri-phosphatetri-phosphate))

ADPADP (adenosine (adenosine di-phosphatedi-phosphate))

GlucoseGlucose (C (C66HH1212OO66)- sugar/carbs)- sugar/carbs

Page 5: Energy in the Cell. Energy Energy- the ability to do work or cause change Energy- the ability to do work or cause change All energy in living things is

ATP vs. ADPATP vs. ADP ATP becomes ADP by ATP becomes ADP by breakingbreaking a phosphate group (P) a phosphate group (P) BreakBreak chemical bonds = chemical bonds = RELEASERELEASE energy energy

ADP becomes ATP by ADP becomes ATP by addingadding a phosphate group (P) a phosphate group (P) AddingAdding chemical bonds = chemical bonds = STORESTORE energy energy

Page 6: Energy in the Cell. Energy Energy- the ability to do work or cause change Energy- the ability to do work or cause change All energy in living things is

PhotosynthesisPhotosynthesis PhotoPhoto: : lightlight SynthesisSynthesis:: make make

somethingsomething

The process by which plant The process by which plant cells use light energy to cells use light energy to makemake food food

Where: Where: chloroplastschloroplasts Who: Chlorophyll-Who: Chlorophyll- pigment pigment

that traps sun’s light energythat traps sun’s light energy

Page 7: Energy in the Cell. Energy Energy- the ability to do work or cause change Energy- the ability to do work or cause change All energy in living things is

The Photosynthesis ReactionThe Photosynthesis Reaction

6 CO2 + 6 H2O + light energy = C6H12O6 + 6 O2

trapped by chlorophyll

Carbon Dioxide + Water + Sunlight = Glucose + OxygenCarbon Dioxide + Water + Sunlight = Glucose + Oxygen

2 stages: 2 stages: Light Reaction-Light Reaction- needs light, oxygen released needs light, oxygen released Dark Reaction-Dark Reaction- no light needed, makes sugar no light needed, makes sugar

Page 8: Energy in the Cell. Energy Energy- the ability to do work or cause change Energy- the ability to do work or cause change All energy in living things is

Cellular RespirationCellular Respiration The The oppositeopposite of photosynthesis! of photosynthesis! Instead of making food, we break down food to Instead of making food, we break down food to

release energyrelease energy Takes place in mitochondria of Takes place in mitochondria of allall living things living things

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

Page 9: Energy in the Cell. Energy Energy- the ability to do work or cause change Energy- the ability to do work or cause change All energy in living things is

Bellringer 11/112/09Bellringer 11/112/09

In your next empty square on page 100:In your next empty square on page 100:

1.1.Write the equation for photosynthesisWrite the equation for photosynthesis2.2.Write the equation for cellular Write the equation for cellular

respiration!respiration!

Use your notes from Tuesday!Use your notes from Tuesday!

RemindersReminders: HW #10 due Fri! LAB FEE NOW!: HW #10 due Fri! LAB FEE NOW!

Page 10: Energy in the Cell. Energy Energy- the ability to do work or cause change Energy- the ability to do work or cause change All energy in living things is

Cellular Respiration StagesCellular Respiration Stages

3 Stages:3 Stages: Glycolysis- anaerobicGlycolysis- anaerobic Citric Acid Cycle (Krebs Cycle)- Citric Acid Cycle (Krebs Cycle)- aerobicaerobic ETCETC (Electron Transport Chain)- aerobic (Electron Transport Chain)- aerobic

Page 11: Energy in the Cell. Energy Energy- the ability to do work or cause change Energy- the ability to do work or cause change All energy in living things is

Aerobic respiration -energy produced using oxygen Anaerobic respiration - also called Fermentation - a process producing energy without oxygen

Page 12: Energy in the Cell. Energy Energy- the ability to do work or cause change Energy- the ability to do work or cause change All energy in living things is

FermentationFermentation1. Lactic Acid 1. Lactic Acid

Fermentation-Fermentation- when when there is no oxygen, ex: there is no oxygen, ex: muscles while runningmuscles while running

2. Alcoholic Fermentation2. Alcoholic Fermentation - - yeast, bacteria, this is yeast, bacteria, this is how we make beer, how we make beer, cheese, bread, vinegar, cheese, bread, vinegar, wine and ciderwine and cider

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

Page 13: Energy in the Cell. Energy Energy- the ability to do work or cause change Energy- the ability to do work or cause change All energy in living things is

Photosynthesis vs. RespirationPhotosynthesis vs. RespirationPhotosynthesis Respiration

Food made Food broken down

Energy from sunlight stored in glucose

Stored energy in glucose released

CO2 taken in CO2 and H2O given off

O2 given off O2 taken in

Occurs in the presence of chlorophyll- plants only

Occurs in all living organisms

Light needed No light needed

In Chloroplasts In Mitochondria

Page 14: Energy in the Cell. Energy Energy- the ability to do work or cause change Energy- the ability to do work or cause change All energy in living things is

Photosynthesis vs. RespirationPhotosynthesis vs. Respiration


Energy. The ability to do work and overcome resistance. The ability to cause change

States and Forms of Energy. What is Energy? Energy is the ability to cause a change or do work What is Energy? Energy is the ability to cause a change

When something is able to change its environment or itself, it has energy. Energy is the ability to cause change. Energy – The ability to do work or cause

What is Energy?. The ability to do work or cause change

trinityrantoul.files.wordpress.com · energy ability to do work or cause a change, ... Energy is the qþility to do work or cause a change. Energy can change an object's motion

UNIT 7 Energy & Work. Energy Energy – the ability to do work (the ability to cause a change)

Energy What is energy?. Energy is the ability to do work or cause change

ENERGY THE DRIVING FORCE. What is Energy? The ability to do workThe ability to do work The ability to cause changeThe ability to cause change Measured

Thermochemistry Energy The ability to do work or transfer heat. Work: Energy used to cause an object that has mass to move. Heat: Energy used to cause

Energy. DEFINITION the ability to cause a change common measurement unit = Joule (J)

ENERGY RESOURCES. WHAT IS ENERGY? Energy is scientifically defined as the ability to do work, or the ability to move or elicit or cause change in matter

Energy Intro to... Energy is the ability to cause change

Lesson 1 What Energy Is Energy is the ability to cause change. Energy allows movement in the world

Energy Transformations!. What is energy? Energy is the ability to cause change (or to do work)

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The Nature of Energy. Energy Energy The ability to cause change. The ability to cause change. Scalar quantity. Scalar quantity. Does NOT depend on direction

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ENERGY ATP Adenosine triphosphate Energy is the ability to ____________or__________. Nearly every activity in modern society depends upon energy. cause

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Physical Science Chapter 5 Energy & Power. 5.1 The Nature of Energy Energy – the ability to do work or cause a change. Energy – the ability to do work

Chapter 4 – ENERGY. Energy Energy—The ability to cause change and the ability to do WORK 9 Main forms of energy: –1. Electrical: energy due to moving

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Chapter 4 Energy. What is energy? Def: ability to cause _________________ Def: ability to cause _________________ Every change involves _______________________

Energy Energy – is defined as the ability to do work; the ability to cause change; all energy can be transferred Two main types of Energy: – Kinetic Energy:

1 Ch 3 Energy. 2 3.1 Energy exists in different forms Energy—ability to cause a change; different forms of energy cause different changes 1.Mechanical

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Energy the ability to cause change” - ”the ability to cause change” -In other words “the ability to do work”