Cell Qiuz Flashcards
Cells
Basic unit of all living things
First scientist to see living cells in Pondwater using microscope
Leowenhoek
Flexible bilayer boundary of the cell of phospholipid molecules with protein molecules embedded in it
Plasma membrane
Made of glycerol, two Fatty acid chains in phosphate group
Phospholipid
Uses energy from food to make high-energy compounds
Mitochondria
Modifies sorts and packages proteins that come from the endoplasmic reticulum
Golgi apparatus
Maintain cell shape with a network of protein filaments
Cytoskeleton
Uses energy from sunlight to make food molecules
Chloroplast
Controls most cell processes and contains DNA
Nucleus
Sites were lipids for membranes are assembled for membrane, has two types – rough and smooth
Endoplasmic reticulum
Site of protein synthesis
Ribsomes
Provide support and protection for the cell
Cell wall
Having a higher osmotic pressure than a particular fluid, typically a body fluid or a intracellular fluid
Hypertonic
Having a lower osmotic pressure than a particular fluid, typically a body fluid or intracellular fluid
Hypotonic
A solution having the same osmotic pressure As some other solution especially one in a cell or body fluid
Isotonic
Large particles engulfed in and close by cell membrane, moves into the cell
Endocytosis
Large particles are released from cell by secreting them
Exocytosis
Particles tend to move from an area where they are more concentrated to an area less concentrated
Diffusion
Cell theory
1) All living things are made of one or more cells
2) cells are the basic unit of structure and function in living things
3) all cells come from other cells
Prokaryotic
Pro-no
No nucleus
Eukaryotic
Eu-do
Has nucleus
Organs in cells
Organelles
What did the invention of the microscope make possible for scientist?
To view and study cells
Electron microscope
Allow object to be magnified up to 500,000 times using beam of electrons instead of light
Scanning electron microscope (sem)
Can help scientist see a cells three-dimensional shape
Transmission electron microscope (tem)
Allows scientists to see structures inside a cell
Scanning probe microscope
Produce images by tracing surfaces of cells or structures with the probe
First scientist who observed cork was made of tiny cells
Robert Hook
