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What parts of a cell do scientists think were once free-living organisms?
Mitochondria and chloroplasts are thought to have once been a free prokaryotic cell.
What did chloroplasts evolve from according to the endosymbiotic hypthesis?
Photosynthetic bacteria has evolved. Symbiotic living has turned it into chloroplasts
What is a characteristic of chloroplasts that suggests that they might have evolved from free-living bacteria?
The presence of a double membrane in chloroplasts, similar to that in prokaryotic cells, is a characteristic that suggests they may have evolved from free-living bacteria. Additionally, chloroplasts contain their own circular DNA, similar to bacteria, and replicate independently within the cell.
Why do you think that there are many small chloroplasts in plant cells instead of just one or two large ones?
Because scientists have seen them.You can use a microscope to observe them.
Which gas is evolved during photosynthesis?
Oxygen gas is evolved during photosynthesis as a byproduct of the light-dependent reactions in the chloroplasts of plant cells.
How do some scientists think that the first eukaryotes evolved?
By various bacteria ingesting but not digesting other bacteria, most likely the precursors of mitochondria (and/or chloroplasts).
What do scientists think fish evolved from?
ampibians
Where do we think mitochondria and chloroplasts came from?
They are thought to evolved from bacteria. Symbiotic living have turned them into organelles
Why do scientists think that dinosasurs evolved into birds?
90% of modern birds
Is chloroplasts a prokaryotic cell?
Chloroplasts evolved from bacteria.They were photosynthetic bacteria.
What animal do scientists think penguins evolved from?
Scientists think that penguins evolved from flying birds, similar to petrels and albatrosses, around 60 million years ago. Over time, they adapted to a more aquatic lifestyle, leading to their distinctive form and characteristics we see today.
What parts of a cell do scientists think were once free-living organisms?
Mitochondria and chloroplasts are thought to have once been a free prokaryotic cell.
Why do scientists think RNA may have evolved before DNA?
because RNA depend to DNA.
What did chloroplasts evolve from according to the endosymbiotic hypthesis?
Photosynthetic bacteria has evolved. Symbiotic living has turned it into chloroplasts
What is an animal that evolved from the lungfish?
Most evolutionary scientists today do not think that amphibians evolved from the lungfish. They do share some characteristics, but the lungfish has no hint of legs.
What is a characteristic of chloroplasts that suggests that they might have evolved from free-living bacteria?
The presence of a double membrane in chloroplasts, similar to that in prokaryotic cells, is a characteristic that suggests they may have evolved from free-living bacteria. Additionally, chloroplasts contain their own circular DNA, similar to bacteria, and replicate independently within the cell.
Which is used as evidence for the idea that the domain Eukarya evolved from unicellular organisms?
Mitochondria and chloroplasts have their own DNA.
