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frozen [14]
2 years ago
9

If you extract the DNA of the coliphage φ X174, you willfind that its composition is 25 percent A, 33 percent T,24 percent G, an

d 18 percent C. Does this compositionmake sense in regard to Chargaff’s rules? How wouldyou interpret this result? How might such a phage replicateits DNA?
Biology
1 answer:
kifflom [539]2 years ago
5 0

Answer:

This composition of nucleotide given in the question do not obey the chargaff"s rule.

Explanation:

According to chargaff"s rule the total number of purine bases will be same to the total number of pyrimidine bases that is

         Adenine+Guanine=Thymine+Cytosine

But here the above quation is not maintained because according to the question A+G=49%

        and T+C = 51%.

Such DNA is replicated by rolling circle model.

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Answer: flowers,other minerals
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3 years ago
The nitrogen cycle is most directly dependent upon-
vovangra [49]

Answer:

B) Nitrogen-fixing bacteria and lightning

Explanation:

Nitrogen cycle is the natural process in which atmospheric nitrogen is converted into nitrite and nitrate with the help of bacteria.

Nitrogen cycle is directly dependent on nitrogen-fixing bacteria and lightning.

As bacteria are responsible for most of the chemical conversion in the nitrogen cycle such as nitrogen fixation (first step) is done by soil bacteria (Cyanobacteria) that form ammonia, which is toxic to plants; nitrification in which ammonia is converted into nitrites and nitrates with the help of Nitrobacter and denitrification bacteria involve Pseudomonas, and Achromobacter which convert nitrite and nitrate into nitrogen.

The lightning breaks nitrogen molecules and allow  it to combine with oxygen in atmosphere which further dissolve in rain and form nitrates.

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5 0
3 years ago
Please help me <br>thank you ​
kifflom [539]

What its saying is:

for the chain chart: list a dangerous weather phenomonon you experienced and list words that specify the weather condition you experienced. For example:

you experienced: hurricane Catrina

Details: Had wrecked my house, was very scared then, other people were scared aswell, etc.

( Note that these details come in handy later for the next part.)

The next part wants you to organize the parts of the story kevin made about his hurricane. as a cheat key, its: 2, 1, 3, 4.

Drafting: Its asking you to make a sentence that describes how you felt during that time. You have to use the I before anything else in order to count for the grade if there is any grade given for this lesson.

The next part just wants you to write a story on teh event that you experienced, in this case the hurricane or other weather condition you have brought up.

Revising and proofreading:

were > was

think > thought

was > we

ever > remove this word

The last part just wants you to check off everything, like a grocery list.

Hope this helped!

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2 years ago
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Nadya [2.5K]

Explanation:

To protect the animals, plants, and more. Without having the habitats they'll die/go extinct. The plants will soon rot/wither away.

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