Tuesday, February 23, 2010

chloroplast and mitochondrion



Why the mitochondrion and chloroplast are designed the way they are:

the chloroplast creates glucose by using photosynthesis, in photosynthesis the chloroplast uses the energy from the sun to convert carbon dioxide to a sugar called glucose

The glucose is then sent to the mitochondrion. Where on the inner membrane or cristae a reaction called cellular respiration happens in this reaction the mitochondrion harnesses the energy within glucose to make an energy called ATP

The atp is used as a battery and is sent to other organelles to power their reactions


this is a picture of the chloroplast the organelle that creates glucose



this is a picture of the mitochondria the organelle that uses glucose to create ATP a special energy used to power other cells

Monday, February 8, 2010

before microscopes people thought you got diseases from curses and supernatural spirits. once microscopes came along scientists discovered microorganisms this enabled them to study cells.
anton van leeuwenhoek was the first person to look at water under a microscope, the microscope he used was a simple light microscope with one lens. compound light microscopes use a series of lenses to magnify objects
there are 3 ideas to the cell theory
1. all organisms are composed of one or more cells
2.the cell is the basic unit of organization of organisms
3.all cells come from preexisting cells

cells that do not contain internal membrane bound structure are called prokaryotic cells
cells containing membrane bound structures are called eukeryotic cells
membrane bound structures within eukaryotic cells are called organelles each organelle has a funcoion that contributes to survival