2What is Photosynthesis? The process of photosynthesis is a chemical reaction.It is the most importantchemical reaction on our planet.
3What do plants need for photosynthesis? WaterCarbon dioxideLightchlorophyll
4What is the equation for the chemical reaction of photosynthesis?
5Describe Photosynthesis The process of changing light energy to chemical energyEnergy stored as sugarOccurs in plants and some algaePlants need light energy, CO2, and H2OTakes place in the chloroplasts, using chlorophyll, the green pigment in plants
6What is it like inside a chloroplast? All around the chloroplasts are stacks of things called thylakoids.The part of the chloroplast that is outside the thylakoids is called the stroma.THE CALVIN CYCLE is in the stroma!
8What are the two types of reactions in photosynthesis? The first reaction is called light-dependent (occurs in the thylakoids)The second reaction is light-independent (occurs in the stroma)
9What do electron carriers do? Sunlight makes electrons in the chlorophyll (located in the thylakoids) very excited! They are so excited they have to be carried by a special carrier molecule called NADP+NADP+ carries two electrons at a time.It also grabs an H+ ion, and this turns the NADP+ into NADPH
10What does the NADPH do?The NADPH carries the very excited high-energy electrons to reactions in the cell.These electrons can be used in making FOOD.This is the LIGHT-DEPENDENT Reaction
11What is the dreaded Calvin Cycle? The Calvin Cycle uses ATP and NADPH from light-dependent reactions to produce high-energy sugars (FOOD)The Calvin Cycle is aLIGHT- INDEPENDENT reaction
12What are the products of photosynthesis? High-energy sugars (FOOD)oxygen
13Why is this important to us? We cannot make our own food (glucose, energy), we must get our food from plants.Plants are the first step in the food chain.The oxygen released during photosynthesis is necessary for all living things.
14Quiz Describe what it’s like inside a chloroplast. Why does Hamel say that photosynthesis is one of the most important chemical reactions on Earth?What happens during the Calvin Cycle?What are the products of photosynthesis?What is needed for photosynthesis?What happens to electrons during photosynthesis?Which happens first, light-dependent reactions or light-independent ones?What does NADP+ do?
15What is Cellular Respiration? Once the energy that was in sunlight is changed into chemical energy by photosynthesis, an organism has to transform the chemical energy into a form that can be used by the organism.Cellular respiration is the process that releases energy by breaking down food molecules in the presence of oxygen.
16Describe Cellular Respiration The breakdown of glucose molecules to release energyTakes place in all living thingsIs a step by step process
17Where does cellular respiration happen? In the mitochondria of living things.
19What is the chemical equation for cellular respiration?
20Diagram of the Process Occurs across Cristae Occurs in Cytoplasm Occurs in Matrix
21What are the Stages of Cellular Respiration? GlycolysisThe Krebs CycleThe Electron Transport Chain
22Anaerobic Processes No oxygen is required for these processes. Includes glycolysis, the breakdown of glucose, and fermentation.Some bacteria and yeast are examples of anaerobes.
23Glycolysis Occurs in the cytoplasm. Breaks down glucose into 2 molecules of pyruvate2 ATP molecules are formed.The series of reactions in which pyruvate is broken down into carbon dioxide is called the Krebs cycle.
25Yikes! There’s another cycle? Yes. The Krebs cycle.The Krebs cycle is where energy is released. Kind of like the Calvin Cycle in reverse…
26What happens during the Krebs cycle? Energy is freed from the chemical bonds. The excited electrons are FREEE!The electrons make ATP.Carbon dioxide is released. You get rid of it by exhaling…
27Where do the electrons go? On the train!The electrons get to ride the electron transport train, the Final step in the breakdown of glucose.Point at which ATP is produced
28What happens to ADP on the train? Ions rush back and forth and spin the ADP in circles.This creates enough energy to produce three molecules of ATP per molecule of ADP.ATP and ADP are special molecules that store energy
29Quiz 1. Where does cellular respiration take place? 2. What is the chemical equation for cellular respiration?3. What are the products of cellular respiration?4. What is the Krebs Cycle?5. What happens during the Krebs Cycle?6. What happens to electrons during cellular respiration?7. How much ATP is produced from one molecule of ADP?
30Complementary processes Photosynthesis is an important part of the carbon cycle.The processes of photosynthesis and cellular respiration are complementary processes, meaning they work together to benefit living organisms.
31Plants and animals contribute… Autotrophs, such as plants, produce glucose using the carbon in carbon dioxide.Both autotrophs and heterotrophs, such as grasshoppers that eat plants, use those carbohydrates in cellular respiration.Respiration, in turn, produces carbon dioxide.
32Energy renewalEnergy captured from sunlight by photosynthetic organisms is used and released in the cellular respiration of living things.The energy that living things use, must continually be renewed through photosynthesis.
33Now create a diagram, that represents the relationship between photosynthesis and cellular respiration (the carbon cycle).Diagram must include at least one autotroph and one heterotroph.Illustrate and label the stages.Title: Photosynthesis/Respiration