Cell

Learning Outcomes

Understand that organisms can be unicellular or multicellular.
Describe multicellular organisms as made of many cells.
Describe the differences between single celled and multicellular organisms.
Understand that there are specialized cells which work together.
State and describe the levels of cellular organization - cells, tissues, organs, organ systems, organisms.
Classify parts of the human body as above.
Understand that there is a special group of cells( different from plant & animal cells) called Prokaryotes.
Describe bacteria as Prokaryotes.
Label the parts of a bacterial cell.

Unicellular and multicellular

Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function.

Multicellular organisms are composed of more than one cell, with groups of cells differentiating to take on specialised functions.

Human Body Systems

Fun Facts

The human body contains nearly 100 trillion cells.
There are at least 10 times as many bacteria in the human body as cells.
The average adult takes over 20,000 breaths a day.
Each day, the kidneys process about 200 quarts (50 gallons) of blood to filter out about 2 quarts of waste and water
Adults excrete about a quarter and a half (1.42 liters) of urine each day.
The human brain contains about 100 billion nerve cells
Water makes up more than 50 percent of the average adult's body weight

You use your eyes to see, your ears to hear and your muscles to do the heavy lifting. Well, sort of. In fact, most body parts are far more complicated than that, while some seem to have no business being inside there at all.