8
What are living things made up of?
Living things
All living things are made up of
cells
. Cells are the basic units of life.
They are living things. Cells are very small, so we need a microscope
to see them.
Cells carry out the basic life processes of interaction, nutrition and
reproduction. Most cells reproduce by dividing to form two new cells.
1
Describe the shape of each group of cells:
spherical, tubular, spiral or star–shaped.
a)
b)
c)
d)
G
E T T I N G S T A R T E D
Animal cell
The
membrane
surrounds
and protects the cell. The
nucleus and cytoplasm are
found inside the membrane.
Cytoplasm
is a thick,
clear liquid protected by
the membrane.
In cytoplasm, we nd
special
organelles
that
carry out di erent life
processes. For example,
they carry out nutrition
by transforming
nutrients into energy.
The
nucleus
controls
everything that happens
inside the cell.
