Cytology Flashcards
(104 cards)
Coined the term “cell”
Robert Hooke
Proposed the first cell theory
Schleiden and Schwann
The Cell Theory:
a. _____ _____ come from _____ _____
b. _____ _____ _____ are composed of _____
c. The _____ is the _____ structural unit of _____ _____ _____
a. All cells come from other cells
b. All living things are composed of cells
c. The cell is the simplest structural unit of all living things
Part of the cell:
Outer boundary
Cell or plasma membrane
Part of the cell:
Point of interactions to external environment
Cell or plasma membrane
Part of the cell:
Central area
Nucleus
Part of the cell:
Contains genetic cell materials
Nucleus
Part of the cell:
Directs cell activities
Nucleus
Part of the cell:
Between the cell membrane and the nucleus
Cytoplasm
Part of the cell:
Encloses the cell
Cell or plasma membrane
Part of the cell:
Supports cell contents
Cell or plasma membrane
Part of the cell:
Selective barrier
Cell or plasma membrane
Part of the cell:
Manage communications between cells
Cell or plasma membrane
The plasma membrane is a _____ membrane
Semipermeable
A mixture of liquids, solids, or gasses in which the
substances are uniformly distributed with no clear boundaries
within the substance
Solution
Movement of molecules from an area of higher concentration to an area of lower concentration in a solution
Diffusion
The movement of solvent across a permeable membrane
Osmosis
Movement of molecules through the phospholipid bilayer
Simple diffusion
Movement of molecules through transport protein
Facilitated diffusion
Movement of small and non-polar particles through a phospholipid bilayer
Simple diffusion
Movement of large or polar particles through a transport protein
Facilitated diffusion
The force required to prevent the movement of water by osmosis across a selectively permeable membrane
Osmotic pressure
The number of _____ particles determines the osmotic pressure
Solute
Solution that has the same concentration of solute particles and the same osmotic pressure as another solution
Isosmotic