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Title: Organization of Organisms: CELLS
Description: These notes focus on the basic structural features of different kinds of cells, suitable for meeting the outline for Biology IGCSE 0610 as well as other other general courses. Happy Learning!
Description: These notes focus on the basic structural features of different kinds of cells, suitable for meeting the outline for Biology IGCSE 0610 as well as other other general courses. Happy Learning!
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Biology 0610/ IGCSE
Unit 1: Organization of the Organisms
-What is a cell?
Cell is a basic functional unit of life
...
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
circular shaped
contains green pigment chlorophyll that traps light for photosynthesis
main site for photosynthesis
-Vacuole
large vacuole present in plant cell
small temporary vacuoles may be present in animal cells
fluid filled space used for storage purpose ; contains cell sap
maintains firm shape of cell due to turgidity
-Mitochondria:
present in both cells
circular or rod shaped
powerhouse of the cell
generates energy stored in Adenosine Triphosphate molecules (ATP)
-Ribosomes:
present in both cells
site of protein synthesis
1
...
3 Prokaryotes and Eukaryotes:
Prokaryotes are unicellular organisms with no nucleus or membrane bound organelles
whereas Eukaryotes are multicellular organisms with nucleus present
...
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Title: Organization of Organisms: CELLS
Description: These notes focus on the basic structural features of different kinds of cells, suitable for meeting the outline for Biology IGCSE 0610 as well as other other general courses. Happy Learning!
Description: These notes focus on the basic structural features of different kinds of cells, suitable for meeting the outline for Biology IGCSE 0610 as well as other other general courses. Happy Learning!