Cool Background!

Cool Background!

Thursday, March 20, 2014

Science, cells

This is what used to think cells were.

Elodea cell

Onion cell

Cheek cell 

This what it looked like under a microscope.

Elodea cell 100* with iodine

Cheek cell 100x with iodine

But now I think they look like this (here are some pictures I drew):

Elodea Cells without iodine 

Elodea with iodine

Cheek cells with iodine drawing.

Onion cells.

Every cell has a nucleus. A nucleus is the part of a cell you can see on the magnification of 4x under a microscope. If you look at my drawing and at the pictures of the microscope you can see big dark circles in each cell. the nucleus is like an identity of the cell. Cells also have membranes. Membranes are the part of cell that decides what goes in and out like oxygen, water and carbon dioxide. Iodine is a chemical that gives colour and makes the nucleus visible. Cloroplasts are unique in elodea cell. Cloroplasts server for photosynthesis.

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