Anton van Leeuwenhoek examined a drop of water under a microscope in 1700 and discovered a new microscopic world. He was the first to describe seeing "masses of tiny, moving worms" and thousands of creatures living together in a single drop of water. Leeuwenhoek was amazed and impressed by this discovery using his microscope, which allowed him to see a whole unseen universe that lived in water.

2. THINK ABOUT
-Why does the text say
that Leeuwenhoek
discovered a new world?
-What is a microscope?
-Did Leeuwenhoek really
see worms in the water?
-Was he impressed to see
a drop of water under the
microscope?
A microscopic world
Round about 1700, a Dutchman, Anton Van Leeuwenhoek, examined a drop of
water through a microscope. He discovered a new world, full of tiny creatures. He
was the first man to describe them:
“ I could clearly see masses of tiny, moving worms. The water seemed to be alive with them. It
was the most wonderful thing I had ever seen in nature: thousands of tiny creatures moving
about, living together in a drop of water. It was a marvellous sight,”
ANTON VAN LEEUWENHOEK
Letter to the Royal Society of London

3. In this unit, we will…
-Learn what cells are and what they are like.
-Learn what unicellular and multicellular living things are.
-Discover the levels of organisation of multicelullar living things.
-Learn the name of the five kingdoms of living things.

4. LIVING THINGS:
1.Living and non-living things
2.Living thing: live processes
3.Cells: unicellular, multicellular.
4.How living things are organized
5.Kingdoms

6. Rocks
People
Plants Animals
-They are born
Wind
-They eat
-They react to the environment
-They grow
Air
-They reproduce
-They die

8. Make sentences following the example:
Example: Living things are born.
1.(EAT)…………………………………………………………………………………
2.(REACT)………………………………………………………………………………
3.(GROW)………………………………………………………………………………
4.(REPRODUCE)………………………………………………………………………
5.(DIE)……………………………………………………………………………………

9. There are three basic life processes:
- Nutrition: living thins eat food, which contains nutrients. These nutrients
provide energy.
- Sensitivity: Living things react to their environment.
- Reproduction: Living things have offsprings. New living things replace the
ones which die.

12. All the living things are made up of tiny units called cells.
microscope
Cells are like tiny sacks full of
The microscope was liquid. They have many smaller
invented about 300 years parts inside. There are many
ago. A microscope is an different types of cells. They differ
instrument that consists of in shape, in size and in the tasks
one or various lenses. This the carry out. Most cells are so
lenses magnify the image small you can t see them with the
of an object many times. naked eye.
Cells are living things, they carry
out the life processes of nutrition,
reproduction and sensitivity.

13. Cells have three main parts: Membrane: is the covering around the cell.
Nucleus: is the part which controls the cell.
Cytoplasm: is between the nucleus and the
membrane.
ANIMAL AND PLANTS CELLS
Plant cells also have a hard wall around the
membrane.
They have special organelles called
chloroplasts to carry out photosynthesis.

14. Draw a cell and write its parts:
Membrane nucleus Cytoplasm Wall
Animal cell Plant cell

15. All the living things are made up of cells.
Animals and plants are Other living things are made up
formed by a large number of of a single cell. This living things
cells which are organised are found everywhere: in water,
according to their functions. in soil, in the air and in ur bodies.
However, you can only see them
through a microscope.
Multicellular: Unicellular:
Living things made up of Living things made up of
many cells. a single cell.

17. Tissues are made up of cells
which work together.
Organs are made up
of tissues which work
Muscle tissue
together.
Heart Systems are made up of
organs which work
together.
An organism is a complete living
thing. Many systems work
together in an organism. All
living things are organism. All the
systems in an organism work
together to keep a living thing
Digestive system
healthy.

19. Put the words in order from the simplest structure to the most complex estructure:
TISSUE ORGANISM CELL ORGAN SYSTEM

22. Living things are classified into groups called kingdoms.
THE ANIMAL KINGDOM
-Animals are multicellular
-They eat other living things
-They can move from one place to another
-They have a nervous system and sense organs
-They react to stimuli.
THE PLANT KINGDOM
-Plants are multicellular
-They use sunlight and substances from de soil to make their food
-They cannot move
-They don t have nervous system or sense organs. However, they react slowly to some
stimuli.
THE FUNGI KINGDOM
-Most fungi are multicellular. A few are unicellular
-They depend on other organism for food.
-They can t move.

23. THE BACTERIA KINGDOM
-Bacteria are the most abundant of all living things.
-They can be found everywhere in the world.
-They are the smallest living things. They are called
microorganisms or microbes.
-They are unicelullar.
-Some of them are helpful, like the ones we use to
make yogurt, cheese or bread.
-Some are harmful, they can cause diseases.
THE FIFTH KINGDOM
-This kingdom is made up of all the living things that
aren t included in the other kingdoms.
-They can be unicellular or multicellular.
-Protozoa are unicellular microbes that feed on other
living things.

24. HOW MANY CELLS FEED MOVEMENT OTHER CHARACTERIS.
ZELULA KOPURUA ELIKADURA MUGIMENDUA BESTE EZAUGARRIAK

27. REVIEW

28. TISSUE SYSTEM CELL ORGAN