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Norma-Jean [14]
3 years ago
11

In the human heart the muscular structure of the ventricles enables them to

Biology
1 answer:
saw5 [17]3 years ago
6 0
They help pump blood at a greater distance than Atria can.
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Nitrogen and carbon are more abundant in proteins than sulfur. Why did Hershey and Chase use radioactive sulfur instead of nitro
lora16 [44]

Answer:

Hershey and Chase experiment confirms that DNA is the genetic material of the living organism, not the RNA or protein. They also got a noble prize for this discovery.

Hershey and Chase use the radioactive sulfur to label the proteins and distinguish them from the DNA because DNA do not contain sulfur. The radioactive label phosphorus was used to label the DNA as phosphorus is specific to DNA as they wants to know exactly the genetic material. They do not use the radioactive carbon and nitrogen because both carbon and nitrogen are present in DNA and RNA. This labeling may produce confused result as it label both DNA as well as protein. The result o radioactive phosphorus and sulfur determines that DNA is the genetic material of the organism.

4 0
3 years ago
Why is the fossil record of marine life more complete than that of organisms living in terrestrial ecosystems?
monitta

Answer:

It is because sedimentation will more often occur in marine ecosystems

Explanation:

Formation of fossils (through the process of fossilization) is a rare event because animal bodies are often eaten and decayed (destroyed by scavengers and decomposed by worms). But, fossilization can be achieved after the quick burial of an animal.

So, for example, dead marine animals might be buried by sediment that is carried by the water. Also, sediment can precipitate on the ocean floor, covering the remaining of dead animals.

7 0
3 years ago
Why do invasive species pose such a threat
Elden [556K]
Invasive species pose such a threat because it can cause harm to wildlife in many ways
6 0
3 years ago
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Science utilizes _______ to determine the best explanations for the natural world.
KIM [24]

The answer is scientific theory. It amalgamates scientific law about objects and events that are widely accepted and tested.  Scientific theory rationalizes phenomenon, that is not rigorously understood, through science. Examples of scientific theories today are the special relativity theory of Albert Einstein.






4 0
3 years ago
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How are enzymes and substrates related?
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the enzyme and substrate fit together like a lock and key.

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