Cells and Systems- Vocabulary
Cell
The smallest unit of life. Some
organisms are made of just one cell.
Others are made of many cells.
Nucleus
This is the “brain” of the cell. It controls
the cells functions.
Cytoplasm
This is the Jellylike substance in the cell
that gives the cell a shape. It fills the
empty places and holds the organelles in
place.
Cell wall
The stiff outer wall of a plant cell
that helps the cell hold its shape.
Cell wall
Cells and Systems- Vocabulary
Cell Membrane
The very thin covering of the cell that
controls what goes in and out of the cell
Tissue
Tissue is groups of cells working
together to perform a function.
Examples are muscle tissue, nervous
tissue, connective tissues.
Organ
Groups of Tissues working together to
perform a function. Examples are heart,
liver, stomach, brain, and intestines.
System
Groups of organs working together to
perform a function. Examples are the
respiratory system (nose, bronchial tube,
lungs) or digestive system (mouth,
esophagus, stomach, small intestine,
large intestine)
Cells and Systems- Vocabulary
Organelles
Nucleus
Cytoplasm
Cell membrane
Cells and Systems- Vocabulary
Cell wall
Vacuoles
Chloroplasts
Mitochondria
Cells and Systems- Vocabulary
Ribosomes
Endoplasmic Reticulum
lysosomes