Topic 1 Cell Biology

contains genetic material and controls activities of the cell

where most aerobic reactions take place

gel-like substance where most chemical reactions happen, contains enzymes

holds the cell together and controls what goes in and out of it

creates protiens in the cell

wade of cellulose, supports and strengthens the cell

contains cell sap, a weak solution of sugar and salts

where photosynthesis takes place, contains a green substance called chlorophyll, which absorbs the light needed to photosynthesise.

Cell wall, Cell membrane, Circular DNA, Plasmids

light microscope

Light and lenses

uses electrons to form an image and has much higher resolution and magnification than a light microscope

electron

light

image size ➗real size

image size = magnification x real size

small and simple cell, eg bacteria

complex cell, includes all animal and plant cells.