How is active transport different from passive transport?

transcript

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.

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

Needed for respiration

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

How is active transport different from passive transport?

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