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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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What component of the cell wall helps in growth and development, as well as keeping it strong to defend itself?
Ratling [72]

Answer: Option C.

Cellulose.

Explanation:

Cellulose is a polysaccharide which is made up of glucose and it is an important component in plant cell wall. It give strength and rigidity to the cell wall. Cellulose make the cell walls strong. This play a regulatory role in tissues growth and provide strength. The cellulose is only found in cell wall and it's protect the cell wall.

8 0
3 years ago
What we ever seen a super volcano erupts
miss Akunina [59]

Answer:

no we havent

Explanation:

The last one was 26,500 or 74,000 years ago.

6 0
2 years ago
The hottest layer in the<br> atmosphere is the thermosphere
Dima020 [189]

Answer:

Thermosphere.

Explanation:

The thermosphere and the exosphere together form the upper atmosphere. ... Because there are relatively few molecules and atoms in the thermosphere, even absorbing small amounts of solar energy can significantly increase the air temperature, making the thermosphere the hottest layer in the atmosphere.

8 0
2 years ago
N
Margaret [11]

Answer:

Four hydrogen nuclei join to form a helium nucleus, two neutrinos, and energy.

Hope this help

6 0
3 years ago
6. Fungus is an organism not drawn in the above
AURORKA [14]

Answer:

Fungi and bacteria help other things such as wast and minerals break down and reproduce. They are very important role of organisms. Without them our grounds would be full of trash and non broken down minerals. Our lands would be toxic on the outside, and many animals would die. It isn't on the food chain because, nothing really eats it, because some are toxic, but we also need them for the environment and breaking down things.  

Explanation:

I searched it up. I hope this helps! Have a nice day. Bye. :)

3 0
3 years ago
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