Slide 1 / 44 Slide 2 / 44 7th Grade PSI Matter and Energy in Everyday Life www.njctl.org Slide 3 / 44 Slide 4 / 44 Table of Contents Click on the topic to go to that section Photosynthesis Photosynthesis · Photosynthesis Formula Game · Cellular Respiration · Matter and Energy Flow · Return to Table of Contents Slide 5 / 44 Slide 6 / 44 Energy for Life Energy for Life Where do you think all All organisms get their energy organisms on Earth get their from the sun! energy? How is this possible though? Do different organisms get Isn't this giraffe getting its energy from different places or energy from the tree he is do all organisms get energy eating? from the same place? Brainstorm at your table. Brainstorm at your table.
Slide 7 / 44 Slide 8 / 44 Photosynthesis Photosynthesis Many living things can perform photosynthesis: The sun's energy cannot be used by cells without some help. How do plants get the Photosynthesis is the energy from the sun? process that makes the energy of Once you have come up sunlight usable for with an idea, move the picture for the answer. Algae all living things. Bacteria Plants Are there any animals who perform photosynthesis? Slide 9 / 44 Slide 10 / 44 1 Where does the energy for life come from? Photosynthesis Discovery Lab A Earth Teacher Note Answer B The Sun Complete Lab assignment according to teacher directions. C Food D Fossil Fuels Check out this video about photosynthesis. Slide 11 / 44 Slide 12 / 44 Chemicals involved in Photosynthesis Chemicals involved in Photosynthesis Water: H 2 O In addition to food, what do Carbon Dioxide: CO 2 plants provide to us which we (and the fish in this Oxygen: O 2 picture) need? Glucose: C 6 H 12 O 6 Glucose is sugar, a complex carbohydrate containing carbon. The individual molecules of Carbon, Hydrogen and Oxygen are joined together to make this molecule.
Slide 13 / 44 Slide 14 / 44 Plant Cell Review What chemical is not part of the photosynthesis 2 process? In the last chapter, we learned about cells and organelles. A carbon dioxide B water Answer At your table, think back and come up with a list of some cell C glucose characteristics and organelles which are specific to plants alone. D carbon monoxide E oxygen Be ready to give an example to the class! Slide 15 / 44 Slide 16 / 44 Reactants for Photosynthesis 3 Which of the following are used in Photosynthesis? (select all that apply) Photosynthesis occurs mainly in the leaves of plants and in the chloroplasts. A Sunlight B Water Answer The pigment chlorophyll, which makes leaves green and is found C Hydrogen inside the chloroplasts, collects the energy of sunlight. D Carbon Dioxide The roots collect water and the stomata of the leaves collect CO 2. These two materials are called the reactants. Slide 17 / 44 Slide 18 / 44 Photosynthesis is a multi-step process 4 Which plant parts are used in the collection of raw materials for photosynthesis? Step 1: Collection of raw materials (sunlight energy, water, A chloroplast and endoplasmic reticulum carbon dioxide). Step 1 is called the light dependent reactions. Answer B mitochondria and golgi body Step 2: Processing of the raw materials to form glucose and oxygen. This step is called the Calvin Cycle, which is also C leaves and nucleus known as the light independent or dark reactions. D chloroplast and stomata
Slide 19 / 44 Slide 20 / 44 The Calvin Cycle 5 What is the name of the cycle that is also known as the light independent reactions? The Calvin Cycle occurs when the molecules of carbon dioxide and water are taken apart , rearranged and recombined using the A Calvin Cycle energy in sunlight to make glucose and oxygen. Answer B Photosynthesis Cycle C Hobbes Cycle The Calvin Cycle is named for Melvin Calvin, who in 1937 alongside his colleagues at the D Respiration Cycle University of California, discovered the process. Slide 21 / 44 Slide 22 / 44 Why is the Calvin Cycle also Equation for Photosynthesis called the Dark Reaction? Drag and drop the reactants and products into the correct place in the equation. It is not really dark! It can happen anytime of the day, but does not require light to ______ + _____ _______ + ______ work. Carbon Water Glucose Oxygen Dioxide Slide 23 / 44 Slide 24 / 44 Equation for Photosynthesis Photosynthesis Formula Game The process can be simplified into the following equation: Teacher Note 6CO 2 + 6H 2 O C 6 H 12 O 2 + 6O 2 sunlight Learn more about photosynthesis and formulas The equation above contains 6 carbon molecules, 12 hydrogen by playing this game. molecules, and 18 molecules in both the reactants and products. They have just been regrouped into different compounds. Return to Table of Contents
Slide 25 / 44 Slide 26 / 44 6 What are the products of Photosynthesis? Overall Idea: Photosynthesis A Water and Carbon Dioxide Glucose is used by the cell immediately or stored for growth B Glucose and Oxygen or later use. The oxygen is released as a waste product, it leaves Answer through the stomata. C Carbon Dioxide and Glucose This is good news because humans and many other animals rely D Water and Oxygen on this oxygen! The process of Photosynthesis has stored the energy of sunlight for later use! Slide 27 / 44 Slide 28 / 44 Set Sail for the Island of Photosynthesis Project Cellular Respiration Please use lab sheets to complete this assignment. Return to Table of Contents Slide 29 / 44 Slide 30 / 44 Cellular Respiration Photosynthesis and Cellular Respiration Human and other animals do not photosynthesize. Instead, our cells perform a process called Cellular Respiration Photosynthesis and respiration have a special relationship. In animals, breathing is also known as respiration. Our cells This happens in the also need to breathe. What do you think the relationship mitochondria and the between photosynthesis and respiration is? cytoplasm.
Slide 31 / 44 Slide 32 / 44 Cellular Respiration Photosynthesis vs. Cellular Respiration Our cells turn these reactants into water and carbon dioxide, which In photosynthesis, plants take in water and carbon dioxide and coincidentally is needed by photosynthetic organisms! produce glucose and oxygen. H In order for cellular respiration to water In this process, our cells O occur, cells need to take in this also release energy. This H glucose (sugar), which is collected Glucose (food) means that cellular Glucose (food) through food. respiration is an C O O Carbon Dioxide exothermic reaction. The cells also need this oxygen, which is collected by lungs, gills, or Oxygen Oxygen other similar structures. Energy Slide 33 / 44 Slide 34 / 44 Equation for Cellular Respiration Equation for Cellular Respiration Drag and drop the reactants and products into the correct place in the equation. C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O + ATP ____ + _____ _____ + _____ + _____ This equation has 18 molecules of oxygen, 12 molecules of hydrogen and 6 molecules of carbon on both sides of the equation. ATP, or adenosine triphosphate, is the source of power in the cell. Carbon Water Energy Oxygen Glucose Dioxide Slide 35 / 44 Slide 36 / 44 How does the formula for Cellular Cellular Respiration Molecular respiration relate to the formula for Model Activity Photosynthesis? Work together with your game boards from the Photosynthesis Formula game to complete the Venn Diagram in your class work section.
Slide 37 / 44 Slide 38 / 44 Photosynthesis and Cellular Respiration Fill in the blanks Relationship Plants Use: Photosynthesis ________ and Plants Produce: Water _______ and oxygen These two processes are opposites. ________ Cell The products of one are the raw materials of the other. _________ Cell _____________ _____________ Photosynthesis produces glucose and oxygen, which are then used by Cellular Respiration to release energy, carbon dioxide and water. Animals Produce: Animals Use Carbon Dioxide and _______ glucose and Cellular Respiration ________ Slide 39 / 44 Slide 40 / 44 7 What is the relationship between Photosynthesis and Cellular Respiration? A There is no relationship Matter and Energy Flow Answer B They are identical C They are very similar, but not identical D They are opposite processes Return to Table of Contents Slide 41 / 44 Slide 42 / 44 Complete the chart below Matter and Energy Flow _____________ Photosynthesis Now that we know how Photosynthesis Energy Energy, and Respiration work STORED Water and together, let's think Glucose Carbon about how this system and Dioxide flows... Oxygen RELEASED Cellular Respiration RELEASED ______________
Slide 43 / 44 Slide 44 / 44 Draw your own 8 How does energy flow through the cycle of Photosynthesis and Cellular Respiration? Chart of matter and energy flow A Energy is stored and never released Include: Answer B Energy is stored by Photosynthesis and released All materials and the amounts of each by Cellular Respiration A plant C Energy is released by Photosynthesis and stored An animal by Cellular Respiration All terms D Energy is released by Photosynthesis and Cellular Where energy is stored Respiration Where energy is released/ reused
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