bio 253 lecture 2 Exam | Atcual Questions
and Answers with Verified Solutions | Latest
Updated 2026
where did eukaryotes come from? endosymbiotic theory
What is the endosymbiotic theory? A large prokaryotic cell engulfed other
prokaryotic
cells, which continued to live and
reproduce inside
the bigger cell,
small cells performed specialized functions
and eventually evolved into a single
functioning
unit
What evidence supports the the similarities between eukaryotic
endosymbiotic theory? organelles and
prokaryotic organelles (mitochondria and
chloroplast)
both contain 70s,circular chromosomes
both capable of independent division
Flagella (eukaryotic) whip like motion
thick
Cilia (eukaryotic) shorter, thinner, hair like organelles; more
numerous than flagella,
, Glycocalyx (eukaryotic) outermost layer made of polysaccharides
promotes adherence
offers protection to environmental changes
Cell wall rigid,provides support
nucleus storage and replication site of dna
Nucleolus RRNA Synthesis
Rough ER stores ribosomes
protein synthesis site
Smooth ER NO ribosomes
lipid syntheisis
Golgi apparatus Packages protiens and lipids for transport
Lysosomes Intracellular digestion
Vacuoles temporary storage and transport
Mitochondria Energy production using krebs cycle
Chloroplast conversion of sunlight into chemical
energy
(photosynthesis)
and Answers with Verified Solutions | Latest
Updated 2026
where did eukaryotes come from? endosymbiotic theory
What is the endosymbiotic theory? A large prokaryotic cell engulfed other
prokaryotic
cells, which continued to live and
reproduce inside
the bigger cell,
small cells performed specialized functions
and eventually evolved into a single
functioning
unit
What evidence supports the the similarities between eukaryotic
endosymbiotic theory? organelles and
prokaryotic organelles (mitochondria and
chloroplast)
both contain 70s,circular chromosomes
both capable of independent division
Flagella (eukaryotic) whip like motion
thick
Cilia (eukaryotic) shorter, thinner, hair like organelles; more
numerous than flagella,
, Glycocalyx (eukaryotic) outermost layer made of polysaccharides
promotes adherence
offers protection to environmental changes
Cell wall rigid,provides support
nucleus storage and replication site of dna
Nucleolus RRNA Synthesis
Rough ER stores ribosomes
protein synthesis site
Smooth ER NO ribosomes
lipid syntheisis
Golgi apparatus Packages protiens and lipids for transport
Lysosomes Intracellular digestion
Vacuoles temporary storage and transport
Mitochondria Energy production using krebs cycle
Chloroplast conversion of sunlight into chemical
energy
(photosynthesis)
