CELL THEORY
What is biology the study of?
Life
plasma membrane is....
the barrier that surrounds all cells and forms their surface.
What does the Receptor do?
Respond to
chemical
signals, like
hormones.
Hypertonic
Higher concentration of
solute outside of cell.
Water moves out of cell.
Cell shrivels.
Cytosol
the fluid found within cells containing nutrients,
ions, and proteins.
Who discovered cells?
Robert hooke
Phospholipids are....
the main component of plasma membranes.
What does the Carrier do?
Transport
materials across
membranes.
Isotonic
Equal concentration of
solute in and out of cell.
Water moves in and out.
No cell change.
Organelles
individual structures that have specific jobs.
What do all cells maintain?
homeostasis
Hydrophobic are...
fatty
acid tails are
insoluble in water.
what does the Enzymes do?
Increase the rate
of membrane
chemical
reactions.
Hypotonic
Lower concentration of
solute outside of cell.
Water moves in to the cell.
Cell bursts.
cytoskeleton
a network of protein filaments that give the
cell structure and support its shape.
what is the smallest human cell?
sperm at 0.05mm (50um) in diameter.
Hydrophilic is...
phosphate heads are
soluble in water.
what is Anchoring?
Attachment to
other cells.
Exocytosis
moves material
out of the cell.
Centrioles
Cylindrical structures that direct chromosomes during cell division.
What is the largest human cell?
eggs at about 0.13mm (130um) in diameter.
what do proteins do?
enable communication, transportation, and adhesion.
what Is recognition?
Identify the cell as
“self” to the
immune system.
Endocytosis
moves material
in to the cell.
Cilia and Flagella is....
Cilia: Long, slender extensions of plasma membrane that can move independently.
Flagella: Very long extensions of plasma membrane that can move independently.