distinctions among archaebacteria, eubacteria & eukaryotic Cells

bacteria and archaea are … but in separate domains

prokaryotic

…. is believed to have given rise to Eukarya

an ancestor of modern archaea

archaebacteria are … or … anaerobes

obligate or facultative

cell membrane of archaebacteria are composed of …

lipids

the rigid cell wall of archaebacteria does what?

• provides shape and support

• protects the cell from bursting under hypotonic conditions

archaebacteria’s cell wall is composed of…

pseudomurein

pseudomurein prevents the archaebacteria from…

the effects of lysozyme

what is a lysozyme

enzyme released by the immune system of the host, which dissolves the cell wall of pathogenic bacteria

archaebacteria do not have …

membrane-bound organelles

archaebacteria live in a variety of environments, called …

extremophiles

archaebacteria mode of reproduction

asexual, binary fission

define nucleoid

a central region of the cell that contains its DNA

define ribosomes

responsible for protein synthesis

most bacteria have a … cell wall made from … and … called …

rigid, carbohydrates and proteins called peptidoglycans

define capsule

some bacteria have a layer of carbohydrates that surrounds the cell wall called the capsule, helps the bacterium attach to surfaces

define fimbriae

thin, hair-like structures that help with cellular attachment

define pili

pili are rod-shaped structures involved in multiple roles, including attachment and DNA transfer

define flagella

thin, tail-like structures that assist in movement