Cellular Respiration Honors - Blackboard

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Cellular Respiration:

Cellular Respiration

PHOTOSYNTHESIS REVIEW:

PHOTOSYNTHESIS REVIEW 1 2 6 7 3 5 4

Comparing Photosynthesis and Cellular Respiration:

Comparing Photosynthesis and Cellular Respiration Photosynthesis Cellular Respiration Function Location Reactants Products Equation Energy Storage Energy Release Chloroplast Cytoplasm; Mitochondria CO 2 + H 2 O + light C 6 H 12 O 6 + O 2 C 6 H 12 O 6 + O 2 CO 2 + H 2 O + ATP 6CO 2 + 6H 2 O + light  C 6 H 12 O 6 + 6O 2 C 6 H 12 O 6 + 6O 2  6 CO 2 + 6H 2 O + ATP

Energy :

Energy The energy in photosynthesis is converted from _____________ energy to ________ energy in the form of glucose. The energy in cellular respiration is converted from ___________ energy to _____________ energy, _____________ energy and ______________ energy. Light Chemical Chemical Electrical Mechanical Thermal

Calorie:

Calorie When burned all at once, 1 gram of glucose releases 3811 _______ of thermal (heat) energy calories

Calorie Definition:

Calorie Definition amount of energy needed to raise the temperature of 1 gram of Water 1 °C.

CALORIE:

CALORIE One candy cane actually contains _________ calories!! 60,000 The calorie (small “c”) is 1000X smaller than the Calorie (capital “c”) found on food labels.

What do cells do with glucose?:

What do cells do with glucose? Cells don’t burn glucose , however, to release their energy. They release it ______________ in three stages: gradually

Three stages of cellular respiration:

Three stages of cellular respiration Glycolysis Krebs Cycle (Citric Acid Cycle) Electron Transport Chain (ETC)

Let’s look at how much energy glucose contains if we would burn it!:

Let’s look at how much energy glucose contains if we would burn it! Gummy Bear = C 6 H 12 O 6 Potassium Chlorate KClO 3 Heat the potassium chlorate until it starts to decompose 2KClO 3(s)  2KCl (s) + 3O 2(g) Add gummy bear and watch  C 6 H 12 O 6(s) + 6O 2(g)  6CO 2(g) + 6H 2 O (g)

From your holiday dinner table to ATP:

From your holiday dinner table to ATP

Glycolysis:

Glycolysis The Advantages of Glycolysis The process of glycolysis is so fast that cells can produce thousands of ATP molecules in a few milliseconds. Glycolysis does not require oxygen.

Glycolysis:

Glycolysis 2 PGAL

Cellular Respiration Journey:

Cellular Respiration Journey Glycolysis O 2 O 2 Krebs Cycle Electron Transport Chain Fermentation aerobic anaerobic

Fermentation Examples:

Fermentation Examples

Fermentation:

Fermentation If oxygen is NOT available, 2 NADH lose their _____________ to pyruvic acid which then becomes 2 __________________. The NAD+ are then recycled back to assist in _____________________. electrons Lactic Acid Glycolysis

Yogurt Label:

Yogurt Label

Fermentation:

Fermentation Pyruvic acid + NADH  alcohol + CO 2 + NAD + The NADH again release their electrons to pyruvic acid to become NAD+, but now the products are _____________ and _____________. alcohol CO 2

Sassafras Tree:

Sassafras Tree

Cellular Respiration Journey:

Cellular Respiration Journey Glycolysis O 2 O 2 Krebs Cycle Electron Transport Chain Fermentation

Let’s Journey Into the Matrix…:

Let’s Journey Into the Matrix…

The Krebs Cycle :

The Krebs Cycle Pyruvic acid travels from the cytoplasm into the ____________ where the Krebs Cycle occurs. Mitochondrial matrix

PowerPoint Presentation:

ABOUT KREBS CYCLE

PowerPoint Presentation:

1. A carbon is removed from pyruvic acid, forming______ . 2. Electrons are transferred, changing NAD+ to ________ . CO2 NADH

The Krebs Cycle :

Copyright Pearson Prentice Hall The Krebs Cycle 3. The remaining two carbons join to an enzyme called Coenzyme A , forming acetyl-CoA.

PowerPoint Presentation:

Citric acid 4. The Acetyl-CoA then joins to a four carbon compound forming________. This is why the Krebs Cycle is often referred to as the Citric Acid Cycle. Citric Acid

The Krebs Cycle :

Copyright Pearson Prentice Hall The Krebs Cycle

The Krebs Cycle :

Copyright Pearson Prentice Hall The Krebs Cycle

The Krebs Cycle :

The Krebs Cycle Overall, the Krebs cycle produces the following: 3 molecules of CO2 – exhaled from our bodies 1 ATP – used directly for cellular activities 5 electron carriers (4 NADH and 1 FADH2) - go on to the electron transport chain to produce more energy.

Electron Transport:

Copyright Pearson Prentice Hall Electron Transport The electron transport chain uses high energy electrons from the Krebs contained in the electron carriers NADH and FADH 2 .

Electron Transport:

Electron Transport As a pair of electrons is transported down the ETC, their energy is used to move H + ions across the membrane. This sets up a proton gradient , with one side being positively charged and the other negatively charged.

Electron Transport:

Electron Transport

Electron Transport:

Electron Transport

Electron Transport:

Electron Transport ATP synthase The inner mitochondrial membrane contains the enzyme ATP synthase that, as it spins like a turbine, pulls H ions down its concentration gradient, which provides energy to convert ADP into ATP .

Electron Transport:

Electron Transport ATP synthase Channel

Electron Transport:

Electron Transport ATP ATP synthase Channel

Electron Transport:

Electron Transport Oxygen is important because it serves as the final electron acceptor in the ETC in order to get rid of low-energy electrons and hydrogen ions to form H 2 O .

Electron Transport:

Electron Transport

Electron Transport Chain:

Electron Transport Chain

Energy Totals and Efficiency:

Energy Totals and Efficiency From one glucose Net Number of ATPs from Glycolysis = 2 + Number of ATPs produced from Krebs Cycle + ETC = 34 GRAND TOTAL = _______ ATPs 36

Quick Energy:

Quick Energy Cells contain enough ATP to las us about 50m. After that, ATP is produced via fermentation, and results in ______ acid build-up in the muscle cells to provide us enough energy for 200-300m. Lactic

Quick Energy (con’t):

Quick Energy (con’t) When the race is over, the only way to get rid of lactic acid is by a chemical pathway that requires extra oxygen, which is why a sprinter will breathe heavily after a race!

Long Term Energy:

Long Term Energy For activities lasting longer than 90 seconds, like a long distance run, we need _______________________ to take place. Athletes pace themselves to give their bodies enough time to undergo cellular respiration, and thus gain the _______ ATP from each glucose molecule to fuel their cell’s reactions. Cellular Respiration 36

Energy and Exercise:

Energy and Exercise Glucose is stored long term as ___________ in the body. The body can run on glycogen for about 15-20 minutes. After this, the body resorts to fats. This is why aerobic activity is so important in controlling our waistlines! Glycogen

Enhancing Exercise:

Enhancing Exercise Creatine Phosphate

It’s Video Time!!:

It’s Video Time!! Mrs. Mohr…can we please watch a science video on cellular respiration???

You Tube Videos:

You Tube Videos Cellular Respiration

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