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lubasha [3.4K]
2 years ago
11

If the mitral valve is unable to close properly, ________.

Biology
1 answer:
Katyanochek1 [597]2 years ago
7 0

Answer:

If the mitral valve doesn't close properly, systemic circulation will be affected.

Explanation:

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Hershey and Chase used a DNA-based virus for their work. How might the results have been different if they had used an RNA virus
4vir4ik [10]

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The correct answer is c.With an RNA virus, radioactive RNA would have been in the final pellet.

Explanation:

Hershey and Chase infected<em> E.coil</em> with bacteriophage which was having DNA as its genetic material. The bacteriophage was labeled with radioactive sulfur and radioactive phosphorus and it was radioactive phosphorus that was found in the bacterial cells or pellet.  

As because DNA contains phosphorus, not protein therefore they it was proved that DNA is the genetic material. Similarly, RNA is also a nucleic acid which is genetic material for many viruses and contains phosphorus.

So if Hershey and chase might have chosen an RNA virus then radioactive RNA would have been present in the pellet. So the correct answer is c.

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3 years ago
What is one way that matter moves from<br> the geosphere to the hydrosphere?
Alisiya [41]

Answer:

Water in the geosphere can be discharged into surface water, becoming part of the hydrosphere once again, or it could be drawn up into the roots of a plant and become part of the biosphere. Water in the biosphere can be released into the atmosphere through transpiration in plants, or respiration in animals.

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What is the main energy source that drives global climate?
marusya05 [52]

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<em>The correct option is A) solar energy</em>

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Solar energy can be described as the energy which comes from the Sun. This energy drives many chemical reactions such as the reactions of photosynthesis and for generating electricity.

The solar energy is thought to meet the potential of all energy required in the future. The solar energy is the reason for all the climatic conditions which arise in a particular area.

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