Thursday, April 7, 2011

4/7/11


End of Chemistry notes:

Chemical reaction: the chemical composition of matter is changed in a reaction

- in order to have a balanced chamical reaction, the number of each element must be the equal on both sides

:images.jpeg

REACTIONS NEVER CREATE OR DESTROY MATTER, THEY REARRAGE IT

Photosynthesis:

-Photosynthesis feeds the biosphere

-converts energy from sun energy into chemical energy of organic compounds

-occurs in plants, some protists and some bacteria

-Autotrophs- make own food, need inorganic compounds to make organic compounds, these are the producers

-Heterotrophs- cannot make its own food, they eat, dependent on autotrophs, these are the consumers

Photosynthesis occurs in CHLOROPLASTS (mainly the leaves of a plant)

-double membrane envelope

-inner membrane encloses stroma- fluid where sugars are made

-thylakaids- sacs in stroma

-grana=stacks of thylakaids

:LUV_fig4_chloroplast_v(1).gif

Homework: read chapter 7

Next Scribe: bridget :)

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