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bonufazy [111]
3 years ago
15

What did Watson and Crick’s model of DNA show?

Biology
2 answers:
taurus [48]3 years ago
6 0
The double-helix shape of DNA.
Nesterboy [21]3 years ago
4 0

Answer:

In 1953, Watson and Crick determined the double-helix composition of DNA, that is, the molecule comprising human genes. They found that the composition of DNA was a spiral of two strands of DNA or a double-helix polymer, each comprising a lengthened monomer chain, that is, the nucleotides wrapped around each other.  

The DNA, that is, a nucleic acid formed of nucleotides combined into chains or long strands with the help of covalent bonds. The nitrogenous bases present in the DNA are guanine, adenine, thymine, and cytosine.  

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lana66690 [7]

Answer: B. TEFKAGSAKGATLFKTRCLQ

D. TEFKAGSAKGATLFKTRCLQ

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Explanation:

3 0
3 years ago
In a fixed medium, which of the following contribute to a higher-pitched
Mrrafil [7]

Answer:

A. shorter wavelength

Explanation:

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3 years ago
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Why does a virus lethal to us not infect animals? I know that RNA viruses mutate at 10,000 to a million times faster than DNA vi
Setler [38]

The virus needs to speak the molecular language of cells. This is how he manages to dominate and enslave them so that they become factories for new viruses, producing the proteins that the infectious agent requires to assemble its descendants. If this conversation is not fine-tuned, even if the virus has the key and enters, it is doomed to failure.

<h3>Why does a virus lethal to us not infect animals?</h3>

For a virus to be able to enter a cell, it must have the right key. And this key, which are the proteins on the surface of viruses, has to enter the correct lock, the receptors that are on the cell membrane. Cells are actually houses with many different doors and locks. Some viruses have keys that open the lock of any cell and any kind of host, and others do not, so the infection caused by viruses is specific.

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8 0
2 years ago
He nurse is providing preoperative teaching for a client who is to have cataract surgery. which is appropriate for the nurse to
Elanso [62]

The nurse should include the following instructions while performing preoperative teaching for an older adult client who will be undergoing surgery to remove a cataract removed:


1. “A cataract is an opacity of the lens, which may be as a result of aging, sunlight, or trauma.”

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3. “A medication will be administered to help you relax. You will also receive some different eye drops to dilate your pupils and paralyze the lens."

4. "You are required to bring sunglasses with you on the day of your surgery."

5. "Please, may I request you to show me how to put these natural tear drops in your eyes?"

4 0
3 years ago
Read 2 more answers
The rising of bread dough is the result of The rising of bread dough is the result of oxygen being released. carbon dioxide prod
Luba_88 [7]

Answer:

Fermentation

Explanation:

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5 0
2 years ago
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