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IgorLugansk [536]
3 years ago
14

Which happens first when a DNA double helix is formed?

Biology
2 answers:
Sedbober [7]3 years ago
5 0

Two nucleic acid strands line up next to each other.

Lelechka [254]3 years ago
3 0

Hydrogen bonds will appear inside the double helix.

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Photosynthesis is an example of
AveGali [126]

Answer : Photosynthesis is an example of a chemical reaction.

Explanation :

Photosynthesis : It is a type of chemical process which takes place in the plant cell. In photosynthesis process, the light energy converted into the chemical energy.

As plant needs carbon dioxide, water and light. During the photosynthesis, carbon dioxide, water and sunlight react to gives glucose, oxygen and water as a product.

The balanced reaction of photosynthesis will be,

6CO_2+12H_2O\overset{sunlight}\rightarrow C_6H_{12}O_6+6O_2+6H_2O

Hence, photosynthesis is an example of a chemical reaction.

6 0
3 years ago
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Common proteins are polymers of 20 different amino acids. How many amino acids are necessary for a protein polymer to have at le
VikaD [51]

Answer:

This way, for 20^2.55 = 2109 amino acids are require to have 2*1056 number different sequences.

Explanation:

Protein should contain 2*1056 of different sequence so

2*1056 = 20^x

 Log (2*1056) = log 20^x

3.3246 = (x ) * 1.3010

X= 2.555

8 0
3 years ago
The action of a buffer to maintain ph within normal limits involves __________.
lozanna [386]
A buffer is a solution encompassing a weak acid and its conjugate base in alike amounts. This combination reduces the pH change upon addition of strong acid or base by converting H1+ (or OH1-) to weaker acids or bases. This primarily consist of compounds that stabilize the pH of a solution by removing or replacing hydrogen ions. Also, substances that resist change in pH. 
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What is the name of the region where the rigid plates are moving apart?
svetoff [14.1K]
It is the Mid-Atlantic Ridge.
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In healthy skin, the production of epidermal cells is closely balanced with the loss of skin cells.
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False
I hope it helped
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