1. AQA EL Science
Component 1
Biology
The Human Body

2. Biology - The Human Body Cells
Recall the parts of human cells:
Describe how specialised cells are adapted for their function.

3. Have you ever wondered what we (humans) are made of?
Biology - The Human Body Cells
Have you ever wondered what we (humans) are made of?
Watch this video to find out!
Video

4. What is a cell? tissue?organ?system?
Biology - The Human Body Cells
What is a cell? tissue?organ?system?
video

5. Review : What is a cell?tissue?organ?system?
Biology - The Human Body Cells
Review : What is a cell?tissue?organ?system?
Animals and plants are made of cells.
Cells form the basic "building blocks" for living things.
Some cells have specialised functions.
Tissues (e.g. muscle) are made from cells of a similar type.
Organs (e.g. heart, lungs) are made from tissues
Systems are made from several organs working together.

6. Biology - The Human Body Cells
What are cells?
Cells
Cells are very small. They are the basic building blocks of all animals and plants. These photographs show cells seen through a microscope.
Animal cells
Cheek cells
These are cheek cells, seen through a microscope:
Plant cells
Onion cells
These are onion cells, seen through a microscope:

7. Biology - The Human Body Cells
Animal cells
Video about cells
Animal cells
Animal cells usually have an irregular shape. Cells are made up of different parts. It is easier to explain what these parts are by using diagrams like the ones below.

8. Animal cell – part & function
Biology - The Human Body Cells
Animal cell – part & function
Part
Function – what is does
Cell membrane
Controls what substances can get into and out of the cell.
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.
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.

9. Biology - The Human Body Cells
Review
Can you name the parts of human cells:
N… ?
C… ?
Cell m… ?
Can you remember the function (what it does) of each part?