Test Dates:
-Body Systems Practical Report:Due Mar 7,2025 ✅
-Biological Sciences Test:Due Apr 4,2025
-Geology Fieldwork Assessment:Due May 30,2025
-S1 Examination:Due June 20,2025
Cells,tissues and organs
Cell make-up - Cells are the building blocks that make up all living things.
- Organisms may be made up of one cell (unicellular) or many cells (multicellular).
- Cells contain small structures called organelles that have specific jobs within the
cell and function together.
Cells can be categorised by presence and absence of particular organelles and
other structural differences.
Prokaryotes and Eukaryotes
- Prokaryotes such as bacteria were the first type of organism to appear on Earth.
The key difference between prokaryotes and all other kingdoms is that members
of this group do not contain a nucleus or other membrane-bound organelles.
- Members of the kingdoms Animalia, Plantae, Fungi and Protoctista are
eukaryotes and are made up of cells containing a nucleus and other
membrane-bound organelles.
,Organelles: Each organelle in a cell has a particular function such as mitochondria
which produce energy for the cell
Cells: Multicellular organisms are made of many cells which has specific functions.
,Organs: Made up of different tissues and include:
- Stomach
- Heart
- Brain
- Lungs
Tissues: Groups of similar cells that perform a specialised job are called tissues.
Muscle tissue contains cells with many mitochondria so that the energy
requirements of the tissue can be met.
, Systems: