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WJEC AS BIOLOGY UNIT 1
1.2 - CELL STRUCTURE
endosymbiotic theory
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Ssam Ssam
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Cards (8)
What was stated 1.5 billion years ago?
ancient bacteria engulfed other bacteria
After ancient bacteria engulfed other bacteria ,what type of relationship did it make?
symbiotic
In the 1920s , what was mitochondria suggested as?
cyanobacteria
In 19th century , what were similar to cyanobacteria?
mitochondria
and
chloroplasts
what can mitochondria and chloroplasts reproduce similarly like?
bacteria
what could some cyanobacteria do ? (
mitochondria)
turn
glucose
and
oxygen
->
atp
+
co2
+
h20
what could some cyanobacteria do ? (chloroplast)
turn
co2
and
h20
into
glucose
what is the key evidence that back this theory ? ( 2 points )?
size:
70s
ribosomes
circular
dna