MICROANATOMY

INTRODUCTION TO MICROSCOPY CELL BIOLOGY

MITOCHONDRIA

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Which of the following is NOT evidence for endosymbiosis?

A	Chloroplasts & mitochondria have DNA similar to prokaryotes
B	Chloroplasts & mitochondria reproduce by binary fission similar to prokaryotes
C	Chloroplasts & mitochondria contain 70s ribosomes similar to prokaryotes
D	Chloroplasts & mitochondria move around the cell freely
E	Chloroplasts & mitochondria can survive independently outside of the eukaryotic cell

Explanation:

Detailed explanation-1: -Therefore, the correct option is b. The chromosome similarity of organelles (mitochondria and chloroplast) does not support the endosymbiotic theory and having non-coding DNA.

Detailed explanation-2: -Evidence for Endosymbiosis Evidence that supports the extracellular origins of these organelles can be seen by looking at certain key features: Membranes (double membrane bound) Antibiotics (susceptibility) Division (mode of replication)

Detailed explanation-3: -So, the correct answer is ‘The presence of membrane proteins on prokaryote cell membrane’. Was this answer helpful?

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