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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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Answer:

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Do you think that fungal cells have turgor pressure? Design an experiment to test your hypothesis.
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Suppose that the mice with unlimited access to water produced more urine than the mice given no access to water. how would that
kupik [55]

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4 0
3 years ago
2. A barrel floats down a river past two flags that are 100 meters apart. The time it took for the barrel to pass each flag is s
Ksju [112]

The speed of the stream's current is 3.6 m/s.

The given parameters:

  • distance between the two flags, d = 100 m
  • time when it passed the first flag, t₁ = 2:15
  • time when it passed the second flag, t₂ = 2:43

<h3>What is speed?</h3>
  • The speed of an object describes the rate of change of an object's distance.

The change in the time of motion of the barrel is calculated as follows;

Δt = t₂ - t₁

Δt = 2:43 - 2:15

Δt = 2 min 43 s - 2 min 15 s

Δt = 43 s - 15 s

Δt = 28 s

The speed of the stream's current is calculated as follows;

v = \frac{d}{t} \\\\v = \frac{100 \ m}{28 \ s}\\\\v = 3.57 \ m/s\\\\v \approx 3.6 \ m/s

Thus, the speed of the stream's current is 3.6 m/s.

Learn more about speed here: brainly.com/question/6504879

4 0
2 years ago
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