Photosynthesis Chapter 8 Objectives: 3.0 Identify reactants and products associated with photosynthesis and cellular respiration and the purposes of these two processes. AOD B.3.1 Identify the function of photosynthesis and cellular respiration. AOD B.3.2 Describe photosynthesis and cellular respiration, including their reactants and products. AOD B.3.3 Recognize the relationship between reactants and products associated with photosynthesis and cellular respiration. AOD B.3.4 Recognize a given formula as either photosynthesis or cellular respiration.
Photosynthesis Chapter 8. Objectives: 3.0 Identify reactants and products associated with photosynthesis and cellular respiration and the purposes of these two processes. AOD B.3.1 Identify the function of photosynthesis and cellular respiration. - PowerPoint PPT Presentation
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PhotosynthesisChapter 8
PhotosynthesisChapter 8
Objectives:3.0 Identify reactants and products associated with
photosynthesis and cellular respiration and the purposes of these two processes.
AOD B.3.1 Identify the function of photosynthesis and cellular respiration.
AOD B.3.2 Describe photosynthesis and cellular respiration, including their reactants and products.
AOD B.3.3 Recognize the relationship between reactants and products associated with photosynthesis and cellular
respiration. AOD B.3.4 Recognize a given formula as either
photosynthesis or cellular respiration.
Objectives:3.0 Identify reactants and products associated with
photosynthesis and cellular respiration and the purposes of these two processes.
AOD B.3.1 Identify the function of photosynthesis and cellular respiration.
AOD B.3.2 Describe photosynthesis and cellular respiration, including their reactants and products.
AOD B.3.3 Recognize the relationship between reactants and products associated with photosynthesis and cellular
respiration. AOD B.3.4 Recognize a given formula as either
photosynthesis or cellular respiration.
What Do You Know?
Complete “Before Reading” portion of Photosynthesis Anticipation/Reaction Guide.
Section 8-1
• Are plants autotrophs, chemotrophs, or heterotrophs?
• Energy can be found in many forms: light, heat, electricity, chemical bonds.….
• Which form(s) is(are) used by plants?
• ATP (adenosine triphosphate) – composed of adenine, ribose, and 3 phosphate groups:
• Cells only store enough ATP for a few seconds of activity: active transport, synthesis of proteins or nucleic acids, movements within the cell, etc..
• ATP is great for transferring energy, but not storing it.
• Glucose can store 90 times more chemical energy than ATP.
Section 8-2• What do plants need to carry
out photosynthesis? Water (H2O), carbon dioxide
(CO2) , and sunlight --- These are called reactants.
• What do plants produce in photosynthesis?
Glucose (C6H12O6) and oxygen (O2) --- These are the products.
Important Historical Discoveries
• Jan van Helmont (1643):– Common belief: plants took
material out of the soil to grow.– Van Helmont grew a tree for 5
years. By comparing the mass of the dry soil and seedling to the mass of the soil and small tree, he concluded that most of the gain in mass came from water.
• Joseph Priestly (1771):– Put a lit candle under a bell jar. What
do you think happened?– Determined the air in the jar was
“injured”.– Wanting to see the effects of “injured
air” on living material, he placed a mint sprig under the jar for a few days.
– When it remained green, he relit the candle, and it remained lit for a while.
– He concluded the plant “cured” the injured air.
– What actually occurred?
• Jan Ingenhousz (1779):– Repeated Priestley’s experiments
using aquatic plants– Found the plants only produced
gas bubbles when the plant was exposed to sunlight