Transcript Cells, you would be nothing without them!

Cells, you would be
nothing without them!
Animal OR Plant?
Animal OR Plant?
The Cell Theory
1. All living things are made of cells.
2. Cells are the basic unit of structure &
function of living things.
3. Living cells come only from other cells.
What’s inside a cell?
ORGANELLE: a structure in a cell.
CELL MEMBRANE: controls what enters
and leaves the cell; it surrounds the cell.
CYTOPLASM: allows materials to move
through the cell; it is jelly like & contains
many dissolved materials (oxygen, food,
waste, etc)
MITOCHONDRIA: produces the cell’s
energy; it’s the site of cellular respiration,
where food is combined with oxygen to
release energy:
Food + Oxygen --> Chemical Energy +
Carbon Dioxide.
NUCLEUS: controls the cell’s
activities; usually found in the cell’s
center & usually darker than the rest of
the cell; it contains all the genetic
information (DNA), which hold the
directions for what the cell must do.
VACUOLE: stores materials for the
cell; is usually MUCH bigger in plant
cells.
Plant Vacuoles are huge.
CELL WALL: supports and gives
shape to plant cells; a rigid, non-living
structure made of complex starch (cell
walls are a major source of fiber).
CHLOROPLAST: converts sun light to
food in plant cells (photosynthesis);
Light Energy + Carbon Dioxide -->
Food + Oxygen
Complex cells = more organelles
LYSOSOME: digests food particles
and wastes; can also digest cell parts
and foreign invaders.
RIBOSOME: makes proteins for the
cell; tiny dot like structures .
ENDOPLASMIC RETICULUM: allows
materials to move through the cell;
looks like flattened, folded pods.
NUCLEAR MEMBRANE: controls what
enters and leaves the nucleus.
NUCLEOLUS: stores materials for the
ribosomes; small, dark spot that may be
seen in the nucleus; looks like a nucleus
inside the nucleus.
GOLGI APPARATUS: packages
materials for transport; the Golgi
apparatus receives chemicals from the
endoplasmic reticulum.