Biology 0610/ IGCSE
Unit 1: Organization of the Organisms
-What is a cell?
Cell is a basic functional unit of life.
1.1 Organelles of a cell:
-Cell Wall:
present only in plant cells
made up of a polysaccharide called cellulose
protects the cell
maintains regular shape
fully permeable
-Cell Membrane:
present in both cells
made up of a lipid bilayer
controls what enters and leaves the cell
waste products leave the cell whereas useful materials enter
semi-permeable
-Nucleus:
present in both cells
circular shaped structure
pushed to the side in plant cell, in the middle in an animal cell
determines which cell the protein should make
aids in cell replication and multiplication
contains chromosomes
-Chloroplast:
present in plant cells
Unit 1: Organization of the Organisms
-What is a cell?
Cell is a basic functional unit of life.
1.1 Organelles of a cell:
-Cell Wall:
present only in plant cells
made up of a polysaccharide called cellulose
protects the cell
maintains regular shape
fully permeable
-Cell Membrane:
present in both cells
made up of a lipid bilayer
controls what enters and leaves the cell
waste products leave the cell whereas useful materials enter
semi-permeable
-Nucleus:
present in both cells
circular shaped structure
pushed to the side in plant cell, in the middle in an animal cell
determines which cell the protein should make
aids in cell replication and multiplication
contains chromosomes
-Chloroplast:
present in plant cells
