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elena-s [515]
3 years ago
6

Over the past century, several scientists around the world have made the following observations: New mitochondria and plastids c

an only be generated by old mitochondria and plastids through a process similar to binary fission. Both mitochondria and plastids contain DNA that is similar in shape and size to that of bacteria. Mitochondria and plastids are surrounded by two or more membranes whose composition is similar to a prokaryotic cell membrane. Mitochondria and plastids are about the size as bacteria. These observations led scientists to conclude that
Biology
2 answers:
marissa [1.9K]3 years ago
3 0

That this an endosymbiotic relation that has evolved over long time that has made the relationship now obligatory. These organelles represent formerly free-living prokaryotes taken one inside the other in endosymbiosis, around 1.5 billion years ago. According to the theory, bacteria received shelter from the protist cell while it generated energy for use by the protist cell.






salantis [7]3 years ago
3 0

Answer: prokaryotic organisms living inside the cells of other organisms evolved into mitochondria and plastids

Explanation:

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is a collections of 250 to 800 million neural fibers that connect the left and right hemispheres of the brain, permitting them t
Lesechka [4]

Answer:

Corpus callosum

Explanation:

Corpus callosum is the red part of the brain that has a “C” shape. The corpus callosum, which is made up of over 200 million of neural fibers, links both hemispheres of the brain (the left and right brain) together, which allows for coordination and complex communication between both in order for the brain to function properly.

This structure usually starts forming about 12 weeks after conception of a child, and continues to develop up to about 12 years of age of the child.  

The main function of the corpus callosum is the ensuring of uninterrupted flow of information, and the integration of complex information and tasks such as motor, sensory and cognitive functions between both hemispheres of the brain.

3 0
3 years ago
What organelles contain vesicles?
aev [14]

Vesicles are used to ship materials around, into, and out of the cell. Cell membranes can pinch off in places to form vesicles, as can lysosome membranes and golgi membranes. Because mitochondria and chloroplasts are practically tiny cells within cells, I wouldn't be surprised if they had their own vesicles. If you're asking literally which organelles have vesicles inside them, I'd say the mitochondria and chloroplasts, possibly Golgi (depends on your instructor), but the cell membrane, lysosomes, and golgi can definitely make vesicles. The rough ER uses vesicles but I wouldn't consider the vesicles a part of the ER.

7 0
3 years ago
Why are mosquitos classified as Arthropods?
TEA [102]
<span>a mosquito is an arthropod. "Arthropod" means "jointed leg" and includes (among others) all insects, arachnids, and crustaceans.</span>
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3 years ago
What distinguishes archaea from animal cells? View Available Hint(s) What distinguishes archaea from animal cells? Archaea's RNA
lapo4ka [179]

Answer & Explanation:

All archeas are single-celled organisms, and despite having prokaryotic cells, there are both similarities and differences between archaea and bacterial cells and also with eukaryotes.

Archaea have only one cell that has no nucleus or real organelles, and its cells have membranes composed of branched lipids, which greatly alter the structure of the archaeal cell membranes. In addition, the archaea have only one DNA strand (uniqueness).

Animal cells differ from archeas because they are multicellular (organisms with several cells), each one having a nucleus, and they also have specialized organelles.

In addition, animal cells have compounds called phospholipids in their membranes, which are unbranched lipids, and therefore do not cause major changes in the structures of their cells. Finally, animal cells have double-stranded DNA (complementary duplication).

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3 years ago
The cytoskeleton is an internal scaffolding used for cellular movement true or false
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It's true :)))))))wooo woo
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