1.1 Flashcards
the smallest unit that can perform all the processes necessary for life
cells
a protective layer that covers the cell’s surface and acts as a barrier
cell membrane
structures that perform specific functions within the cell
organelle
in a Eukaryota cell, a membrane-bound organelle that contains the cell’s DNA
nucleus
single-celled organisms that do not have a nucleus or membrane-bound organelles
prokaryote
organism made up of cells that have a nucleus enclosed by a memberane
eukaryote
little animals
animalcules
the material or protoplasm within a living cell, excluding the nucleus.
cytoplasm
the genetic material that carries information needed to make new cells and new organisms
DNA
cells with no nucleus
prokaryotic
cells that have a nucleus
eukaryotic
microorganisms that are similar to bacteria in size and simplicity of structure but radically different in molecular organization
archaebacteria
a bacterium of a large group typically having simple cells with rigid cell walls and often flagella for movement
eubacteria
a microscopic single-celled organism that has neither a distinct nucleus with a membrane nor other specialized organelles
prokaryotes
are tiny, round organelles
ribostones
another term for archaebacteria.
archaea
live in places where conditions are extreme
extremophiles
A thermophile is an organism a type of extremophile that thrives at relatively high temperatures, between 41 and 122 °C
heat-loving
A usually whitish crystalline solid, chiefly sodium chloride, used extensively in ground or granulated form as a food seasoning and preservative
salt-loving
a colorless, odorless, flammable gas, CH 4 , the main constituent of marsh gas and the firedamp of coal mines, obtained commercially from natural gas
methane-making
