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 Write the overall equation for photosynthesis in words.  Water + Carbon dioxide  Glucose + Oxygen

 Write the overall reaction for photosynthesis in symbols  H 2 O + CO 2  C 6 H 12 O 6 + O 2

 What are the reactants of photosynthesis?  Carbon dioxide and water

 What are the products of photosynthesis?  Oxygen and Glucose

 In what part of a cell does photosynthesis take place?  Chloroplast

 What color are chloroplasts? Why?  Chloroplasts are green because they contain lots of the pigment chlorophyll (which is green)

 The next several slides contain questions about the light-dependent and light independent reactions of photosynthesis.  They also include a diagram for you to look at  You will NOT have a diagram to look at for the test  So, the same questions are repeated later on in the practice but without the diagram  Keep studying the diagram and keep using the practice test until you can answer them correctly without using the diagram

 In what structure does the light-dependent reaction occur?  Thylakoid

 Besides light, what enters the chloroplast during the light-dependent reaction?  Water

 What exits the chloroplast during the light- dependent reaction?  Oxygen

 During the light-dependent reaction, what type of energy transformation is taking place?  Light to chemical (in the ATP bonds)

 In the light-dependent reaction, the energy from the light is used for two things. What are they?  Splitting the water molecule  Charging up ATP by connecting a phosphate group back onto ADP

 In what structure does the light-independent reaction occur?  Stroma

 what enters the chloroplast during the light- independent reaction?  Carbon dioxide

 What exits the chloroplast during the light- independent reaction?  Glucose (sugar)

 During the light-independent reaction, what type of energy transformation is taking place?  Chemical (ATP bonds) to chemical (Glucose bonds)

 In what structure does the light-dependent reaction occur?  Thylakoid

 Besides light, what enters the chloroplast during the light-dependent reaction?  Water

 What exits the chloroplast during the light- dependent reaction?  Oxygen

 During the light-dependent reaction, what type of energy transformation is taking place?  Light to chemical (in the ATP bonds)

 In the light-dependent reaction, the energy from the light is used for two things. What are they?  Splitting the water molecule  Charging up ATP by connecting a phosphate group back onto ADP

 In what structure does the light-independent reaction occur?  Stroma

 what enters the chloroplast during the light- independent reaction?  Carbon dioxide

 What exits the chloroplast during the light- independent reaction?  Glucose (sugar)

 During the light-independent reaction, what type of energy transformation is taking place?  Chemical (ATP bonds) to chemical (Glucose bonds)

 What is the chemical formula for glucose?  C 6 H 12 O 6

 What reactant of photosynthesis provides the carbon atoms in glucose?  Carbon dioxide

 What reactant of photosynthesis provides the hydrogen atoms in glucose?  Water

 The energy required to build the bonds in glucose has to come from somewhere. Where does this energy come from?  ATP

 What is an autotroph?  An organism that makes it’s own food using energy from the sun  Examples include plants and algae

 What is a heterotroph?  An organism that gets energy by eating other organisms.  Examples include fungi (like mushrooms) and animals

 In cells, what is the primary chemical compound used for energy storage and use?  ATP

 How is the energy in ATP released?  By breaking the bonds between the last phosphate group  When this happens, it turns into ATP

 Which is bigger, a thylakoid or a chloroplast?  Chloroplast  Many thylakoids fit inside a chloroplast  Many chloroplasts would then fit inside a cell

 Is it true that plants gain mass (get heavier) from absorbing nutrients from the soil?  No  They gain mass due to the production of sugar, and the raw materials come from water and carbon dioxide

 What is the role of NADP+ in photosynthesis?  NADP+ picks up a hydrogen (becoming NADPH) and carries it to the stroma

 What types of cells have chloroplasts?  Plant cells  Chloroplasts are used for photosynthesis, so things like animal cells wouldn’t have them.

 What pigment do plants have to have in order to undergo photosynthesis?  Chlorophyll  Any plant that contains chlorophyll undergoes photosynthesis

 Why is the light-independent reaction sometimes called the dark reaction?  Because it doesn’t need any light  The energy needed for this part of the reaction comes from ATP

 How is energy transformed throughout photosynthesis?  The energy starts out as light energy from the sun  The light energy is turned to chemical energy in the form of ATP  The chemical energy in ATP is then transformed into chemical energy in the glucose bonds

 If I were you, I’d study this diagram and do the practice test a couple more times.  Good luck!