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stellarik [79]
3 years ago
9

Please give me good luck I have a sciene test and I am not good at science

Biology
2 answers:
frosja888 [35]3 years ago
8 0

Answer:

* gives luck * :3

there ya go

Maurinko [17]3 years ago
5 0
Good luck! I’m sure you can do it :)
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4 years ago
Pop quiz: alpha helices are stabilized by hydrogen bonds between the carbonyl group of residues i and the amide group of residue
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<em> e) Ala</em>

Explanation:

Alpha helix is a secondary structure of proteins, it is made of 3.6 aminoacids residues per turn, this structure is possible thanks to local hydrogen bonding between C=O and N-h groups. The result is a cylindrical structure with a hydrogen-bonded backbone and the outside studded with side chains.

Glycin has an -H in its side chain, this makes it a too flexible molecule, therefore it's unusual to find them in alpha-helical structures because their presence could cause the helix to deform. Large R-groups can also affect this stability, phenylalanine has a bulky aromatic side group, this discards it as a stabilizer. Serine has a hydrogen bond donor or acceptor as a side chain, due to the proximity to the main chain it competes with the main chain to form NH and CO bonds. Alanine is the most common amino acid in alpha-helix structures because it has a short and no charged R group (unlike arginine that even when it's short it has a charged R-group), this makes it flexible enough to keep the structure stabilized.

Hope you find this information useful! good luck!

6 0
3 years ago
In a given year, which would result in the greatest increase in population size?
coldgirl [10]

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B

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Because birth and immigration is making the group bigger zero deaths and animals leaving

4 0
4 years ago
Are blue stars young or old how can you tell
DanielleElmas [232]

Answer: The color blue means that the star is the hottest. Also, the smaller a star is the farther away from earth it is.

Explanation: For example, when you look at a candle and see the blue at the bottom, that means that it is the hottest. In comparison to stars, the color blue always means that it is the hottest.

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