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Big Idea : Enduring Understanding Why do cells need energy? What are forms of energy? Where do cells get energy from?
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Energy Uses
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Energy Sources
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Energy Energy can not be created or destroyed but can be?
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ATP/ADP ATP- - more ADP- -
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Reaction / Cycle ATP is the actual molecule that cells use for energy ATP ------> ADP + P + Energy (for the cell to use)
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ATP Cycle
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Energy to Make More ATP ADP + P + Energy ------> ATP Where does the energy to make ATP come from? Sunlight, Glucose, Food are not used for energy. They are used to make ATP!
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So how does the energy from food/sun get to the ATP? You need a carrier!!!!
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RedOx Review LEO- GER- Which as more energy?
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Carriers NADNADH NADPNADPH FADFADH2
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So… Food / Sun is used to reduce the carriers The carriers get oxidized to produce ATP
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HW
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Photosynthesis Simplified
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Photosynthesis Simplified Reaction Sunlight + Water + Carbon Dioxide > Carbohydrates + Oxygen But what is the sunlight, water, and carbon dioxide used for? And where does the carbohydrates and oxygen come from?
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Two Main Phases of Photosynthesis I Light Dependent Reaction II Light Independent Reaction
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Light Dependent Reaction Reactants?Products? Flow of Electrons?
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Carbon Cycle CO2 Gas Photosynthesis Carbon Organic Form Cellular Respiration Biochemical Pathway
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Leaf Structure
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Chloroplast Structure Thylakoid, Granum, Stroma
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Visible Light Pigment -
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Absorption Spectrum Chlorophyll a Chlorophyll b Carotenoids
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Electron Transport: Process Site Process
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ETC: Restoring Photosystem II
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Chemiosmosis Occurs during which Photosystem? Concentration Gradient of? Produces
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Light Dependent Reaction Summary Products: Reactants: But, In the overall Photosynthesis Reaction: Sunlight+ water+ Carbon Dioxide > Carbohydrates + oxygen We have explained the sunlight, water and oxygen So what about the carbon dioxide and carbohydrate?
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Light Independent Reaction Does not need? But does need?
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Carbon Fixation Site
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Light Independent Reaction Process / conversions Energy from?
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Light Independent Reaction Summary Products: Reactants:
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Balance sheet To make one glucose molecule which requires two PGAL the cycle must occur six times, therefore; For 1 Glucose requires ? ATP’s ? NADPH’s So one Glucose has a whole lotta energy
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Photosynthesis Overall Reaction 6H 2 0 + 6CO 2 --- LIGHT-- C 6 H 12 O 6 + 6O 2 Can you explain each, precisely, detailed? What is the H 2 0 for? What is the CO 2 for? What does the light do? Where does C 6 H 12 O 6 the come from? Where does the O 2 come from?
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Quiz Today Clear of desk 10 minutes
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C-4 Plants For plants growing in When CO2 levels are ?
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C-4 Pathway Uses, makes Requires Examples
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Cam Plants Uses CAM to fix carbon at to use Why?
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Photosynthesis Kinetics How can you change the rate of Photosynthesis? Well, what do you need for photosynthesis -
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Pg 120.
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Energy continues So now you got the energy into the organic compounds How do you get it out, ie. use it!!! Depends on what you are, you use either -
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Photosynthesis Cellular Respiration CO2 + H2O + Energy > Organic Compounds + O2 O2 + Organic Compounds > CO2 + H2O + Energy* *Energy as what? All living things use ATP for cellular energy, ALL LIVING THINGS (this includes….)
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Role of ATP Reaction Review ADP + P + Energy > ATP But where does the energy for this reaction come from, and it is not the SUN
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Energy from FOOD Food is used to make ATP But how does food get to ATP?
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How is Food Metabolized to ATP Fermentation Cellular Respiration
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Cellular Respiration: General General Reaction:
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The Cycle begin with: Glycolysis
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Process Continues Either Anaerobic or Aerobic Depends one whether there is O2
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Anaerobic Process? Does not require?
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Aerobic Process? Does require?
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Glycolysis Glycolysis-
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Glycolysis Site
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Glycolysis Process Glucose and two Glucose split PGAL is converted toand Final conversion
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Where do you go from here? FermentationorCellular Respiration
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Fermentation An Alternative to Cellular Respiration Anaerobic Produces but not (that is from Glycolysis) Two types: Lactic Acid, Alcoholic
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Fermentation Measure and record the size of the “bubble” in your test tube List data in your appropriate group on the board
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Lactic Acid Fermentation Products:
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Lactobacillus
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Muscle Cramps/Rigor Cause: Build up of Lactic Acid due to lack of oxygen, cells switch from respiration to Lactic acid fermentation
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Rigor Mortis
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Alcoholic Fermentation Products:
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Organism!
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Products
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Fermentation Summary Net ATP = Efficiency – Useful only for-
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HW pg 131
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Cellular Respiration Simplified Reaction Food + oxygen > + Energy + Carbon Dioxide + Water Aerobic- But what is the food, and oxygen used for? And where does the energy and carbon dioxide and water come from?
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Cellular Respiration Major Stages Preparatory Phase, follows Gylcolysis Citric Acid Cycle/ Krebs Cycle Electron Transport Chain
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Mitochondria Structure is related to? Site for Cellular Respiration Glycolysis occurs? Similar Organelle?
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Preparatory Phase Follows Glycolysis Pyruvic Acid is converted to_____________?
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Citric Acid Cycle/Krebs Cycle 1. 2. 3. 4. 5.
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One Glucose produces NADH FADH2 ATP CO2
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Products of at the end of the Citric Acid Cycle per 1 Glucose 10 NADH- 2 Glycolysis+ 2 Preparatory Phase + 6 Citric Acid Cycle 2 FADH2 4 ATP = 2 Glycolysis + 2 Citric Acid Cycle 6 CO2 Not much ATP but a lot of? So what do you do???
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Electron Transport Location-
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Electron Transport Chain Electron carriers: H+ gradient produces Role of Oxygen
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Energy Yield Total ATP Efficiency
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Cellular Respiration Overall Reaction
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Carbon Cycle The Reactions
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Other Products
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Dry Lab
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