review 1A Flashcards
prokaryotes
do not have extensive organelles
have circular chromosomes
do not have a nucleus
which of the following is true about gram positive bacteria
they have a thin peptidoglycan layer in the cell wall
they have a second membrane around the peptidoglycan layer
they turn pink when Gram stained
all of the above
none of the above
none of the above
Antibiotics that disrupt cell wall maintenance (e.g., penicillin) are effective against
gram positive bacteria
______ bacteria use energy from inorganic molecules to make ATP
chemolithrotrophic
____ bacteria fix carbon from CO2 or CH4 to make organic molecules
autotrophic
aerobic bacteria produce O2
false
each of the following is true about cyanobacteria EXCEPT
some carry out nitrogen fixation
they use light energy to make ATP
they are heterotrophic/ consumers
they produce O2
they are bacteria
they are heterotrophic/ consumers
what is present in eukaryotes
nucleus & endomembrane system
mitochondria
cytoskeleton
T or F
evolutionarily, chloroplasts arose before mitochondria
false
each of the following is true about mitochondria in eukaryotes EXCEPT
they probably arose evolutionarily from infoldings of the cell membrane
they have their own DNA
they replicate independently of the cell they are located in
they have their own ribosomes
they probably arose evolutionarily from infoldings of the cell membrane
Evolutionarily, chloroplasts probably arose from cyanobacteria living in
eukaryotic cells that had mitochondria
In alternation of generations, spores are produced by the
sporophyte
T or F
a spore is a haploid reproductive cell that develops into a multicellular organism
true
T or F
In alternation of generations, the gametophyte generation is diploid
false, haploid
protists are
are all unicellular
are all multicellular
are all autotrophs
are all heterotrophs
live in dry areas
none of the above
none of the above