cells parts of cell.. cells theory all living things are composed of cells. all cells come from...
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Cells Theory
All living things are composed of cells.
All cells come from pre-existing cells.
Cells are the smallest units of life.
Facts about Cells! Cells are too small to be seen with the eye
alone.
By using a microscope, many parts of a cell
can be seen.
Different cells in human body Our muscles are made of muscle
cells, our livers of liver cells, and
there are even very specialized
types of cells that make the enamel
for our teeth or the clear lenses in
our eyes!
Everything from reproduction to
infections to repairing a broken
bone happens down at the cellular
level.
Parts of Cells Cell membrane is a thin covering around the cell.
The cell membrane separates the inside parts of the cell
from the outside environment,
It gives the cell its shape,
It controls what goes into and out of it.
Located inside a cell is the cytoplasm. Cytoplasm is a
jellylike liquid.
Inside the cytoplasm is the cell's control center called the
nucleus. The nucleus contains all of the instructions for
running the cell.
Parts of Cells The nucleus is surrounded by the nuclear membrane.
The nuclear membrane controls what goes into and
comes out of the nucleus.
Mitochondria are shaped like kidney beans.
Mitochondria are important parts of a cell because
they help change food into energy. The cell uses the
energy to do its work.
Vacuole, are tiny oval structures that store food,
water, or wastes.
Plant and Animal Cells
Plant cells tend to be spherical or to be rectangular,
while animal cells are at times irregular.
All cells, whether plant or animal, have these same
parts: cell membrane, cytoplasm, nucleus, nuclear
membrane, vacuoles, and mitochondria.
Plant cells, however, have two additional parts that
animal cells do not.
Additional parts of Plant Cell Plant cells have cell walls.
This sturdy layer around the cell membrane
supports and protects the cell.
Plant cells also contain chloroplasts.
Chloroplasts contain the green substance
called chlorophyll.
Chlorophyll traps energy from sunlight and
enables a plant to make its own food.
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