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7th Grade Science Test
Hans and Zacharias Janssen
First compound microscope(2 lens)
Examined a cork; first person to describe a cell. (Modified microscope)
Realized plants were composed of cells(German botanist)
Realize that animals were composed of cells.
Realized cells duplicate to make new cells
All living organisms are made of cells
Cells are the basic unit of living organisms
Cells divide to make new cells
Semi Permeable substance
Selectively allows entities to pass through it. (Diffusion Lab)
When an item passes through the cell membrane to form a state of equilibrium.
Starch, Water, Iodine
Chromosomes form; nuclear membrane disappears
Chromosomes line up in the center of the cell
Chromosomes split and are pulled to the ends of a cell
Nuclear Membrane reappears, chromosome uncoil
Produces z diploids (full set of DNA) occurs in body cells
Reproductive cells (gamets) result is 4 haploids cells ( half set of DNA)
Form of nuclear division