MRS C GREN. CELL. Cell. All living things are made up of tiny units called cells. No matter what kind of living thing we look at, the cells are similar in how they are made up and how they work. Cell theory states that:.
All living things are made up of tiny units called cells. No matter what kind of living thing we look at, the cells are similar in how they are made up and how they work.
All living things are made up of cells and cells are only produced from other cells.
All plants and animals are called multicellular as they consist of many cells. Some small plants and animals consist of a few thousand cells, while larger animals and plants such as humans and trees consist of billions of cells. There are many different types of cells found in plants and animals.
There are microscopic organisms (micro-organisms) that consist of one cell only. These unicellular organisms include bacteria, some fungi and protist.
Plant cells are different from animal cells but they have many features in common.
Although they are basically similar, they are some differences between the two.
This is because plants and animal do some things the same but do other things differently.
What do you think is the main difference between the plant and animal cells?
Plant cells make their own food because they are producers but animal cells can’t make their own food.
Both plants and animals are built out of cells. Plant cells have a thick cell wall outside of their cells, but animals cells do not have a cell wall.
Chloroplasts, cell wall, large vacuole
Name the cell structures that are found in both plant and animal cells.
Cytoplasm, cell membrane, nucleus
Name the substance that gives plants their green
colour and where is it found?
Chlorophyll found inside a chloroplast
Name the structure which controls what chemicals
go in and out of the cell?
cells do not.
Cell wall provides support as they grow
vertically, towards the light(shoot) or water
Describe what would happen to their sap
vacuoles when a bean plant has not been
watered for a long time.
Sap vacuoles get smaller, reduces the pressure
on the cell – the plant wilts.
Cells can look very different because they carry out different functions (roles) within an organism.
The structure and shape of a cell allows it to carry out its function.
generally found together.
A group of similar cells is
called a tissue.
A tissue is a group of cells
organised to do a particular job
in the body.
Muscle tissue that lines your stomach and gut is made from muscle cells
Nerve tissue in the brain and spinal cord is
made from nerve cells.
Reproductive organsproduce gamete cells
(sperm or egg)During reproduction, a sperm cell fertilizes an egg to form a zygote. The zygote cell goes through cell divisions to form an embryo.
Chains of different chemical reactions occur inside cells, especially in the cytoplasm. The series of reactions are called metabolism, and are controlled by special chemicals called enzymes. In these reactions, new chemicals can be made or broken down.
Cells are like ‘chemical factories’, so cells have been called living factories.
Some organisms consist of only one cell.
These single cells are complete organisms and can live independently from other organisms.
molecules of food. When enzyme pass out of the body, dead organism’s body is
attacked and large molecules are broken
down to smaller ones. These molecules
are absorbed into the bacterial cell.