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Sav [38]
2 years ago
12

In 1952, Rosalind Franklin took an X-ray photograph that revealed the structure of DNA. James Watson and Francis Crick followed

up on this discovery in 1953. They discovered that the molecule has a specific shape that can best be described as —
A. a single strand containing 4 different bases that vary depending on the type of DNA

B. ladder-shaped, containing 5 nitrogenous bases that bond to one another

C. triple-stranded, with bonds between each strand holding the three strands together

D. double-stranded and twisted, with bases bonded to other bases which hold the strands together
Biology
1 answer:
kari74 [83]2 years ago
4 0

Answer:D

Explanation:It can only be B or D but it has 4 not 5 so it has to be D!

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What are the benefits and drawbacks to using solar, geothermal, and wind power as alternative sources of energy
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The benefits are that you don't have to rely on limited resources and you won't be contribution to global warming but the drawbacks are that you have to find a way to make it run by itself and deal with it not working sometimes.
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n the Meselson-Stahl DNA replication experiment, if the cells were first grown for many generations in 15N containing media, and
nirvana33 [79]

Answer:

50%

Explanation:

DNA replication is a semi-conservative process. It means that after DNA replication, the newly formed DNA molecules have one parental strand and one newly formed strand. The cells in the experiment have DNA with 15N. After one round of DNA replication, each DNA molecule would have one parental DNA strand with 15N and one newly formed DNA strand with 14N.

However, after the second round of DNA replication, each hybrid DNA with strand having 15N and the other with 14N would be unwound. The parental heavy DNA strands would be present in the 50% of the newly formed DNA while the rest 50% of DNA molecules would have both strands with 14N (both light strands).

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2 years ago
Which two life functions of animals help maintain the water cycle by recycling water back into the environment
Sholpan [36]
The answer has to be c
3 0
2 years ago
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The carrying capacity of a wildlife reserve is 570 individuals for a particular species of rodents. If the area of the reserve i
anastassius [24]

Answer:

The carrying capacity of a wildlife reserve is 570 individuals for a particular species of rodents. If the area of the reserve is extended,  the carrying capacity is likely to  Increase

During the summer, a fatal disease began killing individuals. The carrying

capacity of the reserve will therefore​ decrease

Explanation:

The carrying capacity of a habitat is the maximum number of individuals of a given species it can support without depleting the available resources. When the area of the reserve is extended, the carrying capacity increases because the available resources will also increase. A fatal  disease would increase the carrying capacity since the number of wildlife would decrease.

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The paintings in the museum are to be filed, by genre, then title, In alphabetical order. Which painting would be positioned fou
Dmitrij [34]

Hello. This question is incomplete. The full question is:

The paintings in the museum are to be filed, by genre, then title, In alphabetical order. Which painting would be positioned fourth?​

Painting 1 - Title: Morphism, Genre: Abstract, Price: € 10,000.

Painting 2 - Title: Desecrate, Genre: Classical, Price: € 7,000.

Painting 3 - Title: Remix, Genre: Abstract, Prince: € 6,000.

Painting 4 - Title: Instant, Genre: Modern, Prince: € 4,500.

Painting 5 - Title: Fugue, Genre: Classical, Prince: € 17,500.

A. PAINTING I C. PAINTING III  B. PAINTING IV D. PAINTING V​

Answer:

D. PAINTING V​

Explanation:

To find the answer to this question, it is necessary to order the paintings as the question indicates. For this reason, we must first organize the names of the painting genres in alphabetical order. This organization will form the order: Abstract, Classic and Modern.

With that, we can organize the name of the titles, also in alphabetical order, but respecting the order already established in the genres. So we will have the order: Morphism, Remix, Desecrate, Fugue and Instant.

As you can see, the fourth painting in that order is "Fugue" which is the fifth painting.

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2 years ago
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