Cell Theory
What is the cell?
This is the simplest structural and functional unit of life
What is the phospholipid bilayer?
This structure forms the basic foundation of the plasma membrane
What is passive transport?
This type of transport requires no ATP
What is isotonic?
A solution that causes no net movement of water
What is the mitochondrion?
This organelle produces ATP
What does the cell theory state about pre-existing cells?
According to cell theory, all cells come from pre-existing cells
What are hydrophilic heads?
These parts face outward toward water.
What is osmosis?
Water movement across a membrane is called this
What is hypotonic?
This solution causes cells to swell and possibly burst
What is the Golgi apparatus?
This organelle modifies and packages proteins
What is modern cell theory?
This states that all organisms are composed of cells and cell products
What are hydrophobic molecules (steroid hormones)?
This type of molecule can pass directly through the membrane
What is filtration?
Movement caused by hydrostatic pressure
What is hypertonic?
This solution causes cells to shrink (crenate)
What is the rough ER?
This organelle has ribosomes attached
What are the activities of its cells?
This explains why structure and function of an organism exist
What is selective permeability?
This membrane property controls what enters and leaves the cell
What is active transport?
This transport moves substances against their concentration gradient
Does water move inside or out of the cell in a hypertonic solution.
In this solution, water moves out of the cell
What is the smooth ER?
This organelle detoxifies drugs and makes steroid hormones
What are fundamental similarities among cells?
This part of cell theory states that all cells share similarities
What are transmembrane (integral) proteins?
These proteins pass completely through the membrane
What is endocytosis?
This process uses vesicles to bring materials into the cell
What is membrane permeability?
Tonicity depends on solute concentration and this property
What is the lysosome?
This organelle contains digestive enzymes