CONTINENTS AND OCEANS

Go to this interactive map to check you know the name of all the continents and oceans. Have fun!!!


CONTINENTS AND OCEANS

And if you want to listen to their names, go to this one!

Continents and oceans to play and listen

THE THREE VITAL FUNCTIONS

Do you remember what these functions are? Here you have a simple but nice video to revise them. Just click on the next link!

VITAL FUNCTIONS

Enjoy it!

FROM CELL TO SYSTEMS

Animals and plants are made of cells. Tissues are made from cells of a similar type. Organs are made from tissues, and systems are made from several organs working together. They all make up an organism.

cells - tissues - organs - organ systems - organism

If you want to know more details about how this organization takes place, watch this entertaining video.

Enjoy it!

Source: BBC Bitesize 

CELLS - AN INTRODUCTION

Cells
Cells are very small. They are the basic building blocks of all animals and plants. 

Animal cells usually have an irregular shape, and plant cells usually have a regular shape

Cells are made up of different parts. It is easier to explain what these parts are by using diagrams like the ones below.

Animal cells and plant cells both contain:

• cell membrane, cytoplasm, nucleus

Plant cells also contain these parts, not found in animal cells:

• chloroplasts, vacuole, cell wall

The table summarises the functions of these parts.

Part	Function	Found in
Cell membrane	Controls what substances can get into and out of the cell.	Plant and animal cells
Cytoplasm	Jelly-like substance, where chemical reactions happen. In plant cells there's a thin lining, whereas in animal cells most of the cell is cytoplasm.	Plant and animal cells
Nucleus	Controls what happens inside the cell. Carries genetic information. In exams don't call the nucleus the 'brain' of the cell. That is not a good description and will not get you marks.	Plant and animal cells
Chloroplast	Where photosynthesis happens – chloroplasts contain a green substance called chlorophyll.	Plant cells only
Vacuole	Contains a liquid called cell sap, which keeps the cell firm.	Plant cells only
Cell wall	Made of a tough substance called cellulose, which supports the cell.	Plant cells only

From: BBC BiteSize