How is active transport different from passive transport?
Chapter 3Section 3
Where does the energy come from? Page 86
To write the chemical formula for photosynthesis.
To list the raw materials and end products for photosynthesis.
To describe what happens during the process of photosynthesis.
Photo means light Synthesis means putting together Process that plants use to convert the
sun’s energy into food Takes place in the chloroplasts in leaves
of the plants
The sun provides energy for all living things either directly or indirectly.
Autotrophs are organisms that make their own food through the process of photosynthesis.
Heterotrophs are organisms that need to eat.
Light is required The energy of the
sunlight is captured by the chlorophyll in the chloroplast
http://www.osovo.com/diagram/photosynthesisdiagrams.htm
Light is not required The captured energy is converted into
the energy found in food Raw materials needed are carbon dioxide
and water Produces glucose and
oxygen Also known as the
Calvin cycle
http://faculty.stcc.edu/nash/cells.htm
Looking at Pigments page 89
Place a sprig of elodea in a test tube and count the bubbles that are released in 1 minute when inside.
Take your test tube out and count the bubbles that are released in 1 minute.
Is there a difference? What do you think makes the difference? What does this difference mean?
Stomata are the guard cells that allow gases to enter and leave a leaf. They are located on the underside of the leaf.
Scanning electron micrograph of Equisetum (horsetail or scouring rush) epidermis. Note the oval stomatal apparatuses in the center of the stem. The above image is from http://www.mcs.csuhayward.edu/sem/images/horsel4.gif.
http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookPLANTANAT.html
Stomatal apparatus as seen on a leaf epidermal peel of corn. The above image is from gopher://wiscinfo.wisc.edu:2070/I9/.image/.bot/.130/Leaf/Corn_epidermal_peel. Note the two sets of guard cells.
http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookPS.html
Pea Leaf Stoma, Vicea sp. (SEM x3,520). This image is copyright Dennis Kunkel at www.DennisKunkel.com, used with permission.
http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookPS.html
Take a leaf and put clear nail polish on the leave. Let dry and put a second coat of clear nail polish on leaf.
When dry carefully peel the nail polish off of the leaf. Place the nail polish on a microscope slide and look at it under the microscope.
Count the number of stomata that you can identify in the view of the microscope with out moving it.
Do you find more stomata on the top or the underside of the leaf?
Raw Materials Carbon dioxide + Water
Needed but not used upSunlight and Chlorophyll
End Products Glucose + Oxygen
http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookPS.html
Needed for respiration
O2
CO2
http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookPS.html
6CO2 + 6H2O + light energy → C6H12O6 + 6O2
Carbon Dioxide + Water + Light Energy produces or yields ( in chlorophyll ) Glucose + Oxygen
Guided Reading and study Workbook pages 44-46.
What are the substances needed (raw materials) for photosynthesis? What are the substances (products) produced during photosynthesis?
Isolate chlorophyll