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Anestetic [448]
3 years ago
15

That is a fossil?

Biology
2 answers:
SVETLANKA909090 [29]3 years ago
5 0
The remains of an animal or plant preserved within a layer of rock
Svetach [21]3 years ago
4 0
The remains of an animal or plant preserved within a layer of rock.
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Net2vec: quantifying and explaining how concepts are encoded by filters in deep neural networks
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8 0
3 years ago
You decide to repeat the Meselson-Stahl experiment, except this time you plan to grow the E. coli cells on light 14N medium for
svet-max [94.6K]

Answer:

A) One band of intermediate density and one band of heavy density.

Explanation:

According to semi conservative model of replication the two DNA strands separate during replication such that the new DNA molecule has one parental strand and one new strand. In this experiment, originally E.Coli cells were grown in 14N medium so all the DNA strands had 14N. When the medium was changed to 15N, only 15N would be available to the cells for replication.

After first round of replication all DNA molecules would be of intermediate density as one strand would be old 14N strand and another would be new 15N strand. After second round of replication 15N strand would be formed from both 14N strand and 15N strand. So, one band will be formed of intermediate density (14N-15N) and another would be of heavier density (15N-15N).  

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These enzymes do everything from breaking glucose down for energy to building cell walls, constructing new enzymes and allowing the cell to reproduce.

Explanation:

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The aerobic resplratlon. It’s the answer nothing more to say
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