Transcript Document

Cells make Organisms
Cells
Cell wall: found in plants. It is rigid and its
function is to support the cell.
Cell membrane: the outside
boundary of an animal cell. Also
found in the interior of the cell
wall of plants. Its function is to
control what goes in and out of
cells.
Nucleus: the cells “control center” directing all the
cells activities. DNA is found in the nucleus.
HowStuffWorks
Videos "Introduction
to DNA"
DNA is also called chromatin
and is a very long molecule
that contains your genes.
(Notice all the atoms in DNA)
Cytoplasm: gel like fluid found between the nucleus
and the cell membrane. Here you find different
structures call organelles (little organs)
Examples of some organelles:
Mitochondria: rod like structures. Their function is
to produce energy for the cell to carry out the cell’s
function.
HowStuffWor
ks Videos
"The Living
Cell:
Mitochondria"
(mitochondria)
More organelles:
Chloroplasts: found almost only in plant cells. They
capture sunlight and use it to produce food for the cell.
(yes, responsible for photosynthesis and they give
plants their green color)
vacuoles: mostly found in
plant cells. Here water, food
and waste can be stored.
Bacteria: organisms that are composed of one cell only
and do NOT have a nucleus. Their DNA is floating in the
cytoplasm.
HowStuffWorks Videos
"Bacteria: Introduction
to Bacteria"
Other organisms (like you) are multi cellular and are
composed of trillions of cells that are different in size
and structure depending on their functions.
Examples of common
specialized cells:
Blood
cells
Nerve cells
HowStuffWorks
Videos "Introducing
the Cell: Specialized
Cells and Tissue"
Living things have been classified into groups called
Kingdoms.
Organisms are placed in kingdoms based on their type of
cells, their ability to make food, and the number of cells in
their bodies.
HowStuffWorks
Videos "Simply
Science: Five
Kingdoms"
Bacteria: are unicellular organisms, with no nucleus, some
can make their own food some can not.
Protists: are mostly unicellular. Some can make their
own food some can not. They have a nucleus.
HowStuffWorks
Videos "Protists:
Protist Facts"
HowStuffWorks
Videos "The
Basics of Biology:
Kingdom of
Protists"
Fungi: most are multicellular, they have a nucleus and they
can not make their own food (decomposers). Mushrooms
molds and mildew are examples.
HowStuffWorks Videos "The
World of Fungi: Characteristics of
Fungi"
HowStuffWorks Videos
"The World of Fungi:
Obtaining Food"
Plants: are all multicellular and have nuclei. They can
make their own food. Without plants, life on Earth would
not exist.
Animals: are multicellular, have nuclei, and do not make
their own food.