Biology, asked by Kanthabasavaraj1956, 11 months ago

Outer mitochondrial membrane resembles bacterial membrane and outer chloroplast membrane in having?

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Answered by arnavaryansingh
2
About 1.5 billion years ago, primitive bacteria took residence inside larger cells, resulting in an intimate relationship that would mold the evolution of more complex, multicellular beings. The bigger cell was eukaryotic, meaning it contained organelles -- structures surrounded by membranes, but the prokaryotic bacterial cell had no such arrangement. The bigger cells feared oxygen, a poison to their existence, but the smaller cells used the oxygen to make energy in the form of the molecule adenosine triphosphate, or ATP. The eukaryotic cell enveloped the bacteria in predatory fashion, but somehow, the predator did not digest the prey. Predator and prey became mutually dependent. Former Boston University biologist Lynn Margulis cited this endosymbiotic scenario in her theory of the origin of mitochondria, the energy factories of cells, and the reason for their numerous similarities to bacterial cells.

Size and Shape

Based on appearance alone, scientists can draw a relationship between mitochondria and bacteria. Mitochondria have plump, jellybean-like shapes, similar to the rod-shaped bacilli bacteria. The average bacillus ranges between 1 and 10 microns in length, and the mitochondria of both plant and animal cells measure in the same range. These superficial observations constitute one line of evidence supporting the theory that primitive eukaryotic cells had engulfed bacterial cells, forming mutually beneficial relationships.

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Answered by Anonymous
5

Answer:

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Different parts of flower:

1. Petal: Most beautiful and attractive part of the flower Which attract insects

2. sepal: located at lower of flower and protect a close bud

3. ovary: produce seeds and fruits

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