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science-Topic 2

The cell systems

Cells the basic unit of structure and function in living things.
microscope an instrument that makes objects look larger
cell theory is a widely accepted explanation of the relationship between cells and living things
distinguish two separate structures that are close together
organelle is a tiny cell
structure different organelles have a different structure
function Also some organelles are found only in plant cells
cell wall cell wall
cell membrane is a thin flexible barrier that surrounds a cell and controls which substances pass into and out of a cell.
cytoplasm fills the region between the cell membrane and the nucleus
Mitochondria convert energy stored in food to energy
chloroplast is and organelle in the cells of plants and some other organisms that captures energy from the sunlight.
vacuole a sack like organelle that stores water and food
selectively permeable which means some substances can cross the membrane,
Created by: ejl10761cubs
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