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larisa [96]
2 years ago
15

How did eukaryotic cells evolve prokaryotic cells?

Biology
1 answer:
Lera25 [3.4K]2 years ago
3 0

Answer:

The hypothesis that eukaryotic cells evolved from a symbiotic association of prokaryotes (endosymbiosis) is particularly well supported by studies of mitochondria and chloroplasts, which are thought to have evolved from bacteria living in large cells.

Explanation:

Both mitochondria and chloroplasts are similar to bacteria in size, and like bacteria, they reproduce by dividing in two.

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Please help . - How do scientist explain the incomplete fossil record? A) The fossil record is limited to fossilized animals and
stich3 [128]

Answer:

Option C.

Scientist explain the incomplete fossil record because not all organisms become fossils. Processes like erosion and mountain building can change rock layers, causing fossils to be spread over multiple layers or destroyed.

Explanation:

  • Fossils are the remains of organisms that are found on the rocks after they die.
  • So, no one can be 100% sure about the complete fossil record because of the continuous process like erosion and other natural calamities.
  • The sediment must cover any organism's remains to start the fossilization process to start. Most of the organisms start decomposing  before this process can be executed.
8 0
3 years ago
Amino acids come from which type of organic molecule?
ivanzaharov [21]

Answer:

QUESTION:

amino acids come from which type of organic molecule?

ANSWER:

<em><u>Proteins</u></em>

Proteins are polymers made up of nitrogen-containing monomers called amino acids. An amino acid is a molecule composed of an amino group and a carboxyl group, together with a variable side chain.

Explanation:

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5 0
3 years ago
Read 2 more answers
The Upper Midwest, because of its numerous shallow lakes and marshes, rich soils, and warm summers, is described as being one of
AysviL [449]

Answer:The Upper Midwest, because of its numerous shallow lakes and marshes, rich soils, and warm summers, is described as being one of the most important wetland regions in the world. The area is home to more than 50 percent of North American migratory waterfowl, with many species dependent on the potholes for breeding

Explanation:

4 0
3 years ago
Theodor Schwann and Matthias Schleiden were major contributors to the Cell Theory as we know it. In 1839 Schwann published a boo
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Answer:

D

Explanation:

Cells come from free cells

7 0
3 years ago
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Which type of chromosome abnormality is the most difficult?
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Down syndrome, turner syndrome, Klinefelter syndrome, and fragile X syndrome.
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