Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
19 Cards in this Set
- Front
- Back
|
robert hooke |
first to identify cells and name them |
|
|
leeuwenhoek |
made better lenses and observed cells in greater detail |
|
|
schleiden |
said all plants are made of cells |
|
|
shwann |
said all animals are made of cells |
|
|
vircow |
proposed that cells came from other cells |
|
|
cell theory |
all organisms are made of cells and all cells are produced by other living things |
|
|
cytoplasm |
jellylike substance that contains dissolved molecular building blocks |
|
|
organelles |
structures specialized to perform distinct processes within a cell |
|
|
prokaryotic |
has no nucleus or other membrane bound organelles |
|
|
eukaryotic |
has a nucleus and other membrane bound organelles |
|
|
cytoskeloton |
a network of proteins that is constantly changing to meet the needs of the cell (in all eukaryotic cells) |
|
|
microtubles |
long hollow tubes that give a cell its shape and act as tracks for movement of organelles |
|
|
intermediate filaments |
give the cell its strength |
|
|
microfilaments |
help muscles contract and relax
|
|
|
fluid portion |
cytosol, which consists of mostly water |
|
|
nucleus |
storehouse for genetic information |
|
|
what are the 2 major demands of the nucleus |
1.DNA must be carefully protected 2. DNA must be available for use at the proper times
|
|
|
endoplasmic reticulum |
interconnected network of folded membranes |
|
|
ribosomes |
link amino acids together to form proteins |
