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Kazeer [188]
3 years ago
8

Which of the four levels of protein structure is maintained after denaturing?

Biology
2 answers:
Alexxx [7]3 years ago
7 0
Denaturation of proteins includes the interruption and conceivable decimation of both the secondary  and tertiary structures. Since denaturation responses are not sufficiently solid to break the peptide bonds, the essential structure (arrangement of amino acids) continues as before after a denaturation procedure.
Mama L [17]3 years ago
7 0

Answer:

Primary level

Explanation:

There are four levels in protein structure formation. Primary structure is the most basic one where the amino acids are linked to each other via peptide bonds. It is formed between carboxyl group of one amino acid and amino group of another amino acid. When Hydrogen bonding occurs in this polypeptide chain, secondary structure is formed. It can be of two types alpha helix and beta sheet. Tertiary structure is formed by side chain interactions within the polypeptide. Quarternary structure is formed when two or more polypetide chains interact with each other. Denaturation is able to disrupt various hydrophobic and hydrophilic interactions hence protein's structure is destroyed till secondary level. However it is not able to disrupt peptide bond hence primary structure remains intact.

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Some have speculated that the origin of life occurred at geothermal vents. amino acids can form there. compared to the amino aci
cluponka [151]

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But, amino acids are a very minor component of more complex biochemical assemblies required for life. Pentose sugars are also required, which form under different environmental conditions than amino acids. More importantly, only left-handed homochiral amino acids and right-handed homochiral sugars can form functioning biochemical assemblies that are viable in an organism. But, natural conditions, like hydrothermal vents only produce racemic versions of sugars and acids, meaning they are always approx. 50% left and right handed. This is fatal to forming viable biochemical assemblies.


Further, it is not possible for all of the 20+ homochiral amino acids needed for a living organism to form naturally. The only ones found have been the simpler amino acids. Also, the 4 critical nucleotide amino acids, C, G, A, T, do not form naturally, are not homochiral, nor in the right proportions.


The geo/hydrothermal vent conjecture is nonsensical. These are open systems, susceptible to currents, mineral contamination, salinity, ph, and temperature, making them a totally unacceptable environment for the precise and exact placement of elements to assemble to form life.

3 0
2 years ago
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Svetach [21]

Answer:

A. near-Earth objects.

Explanation:

Science can be defined as a branch of intellectual and practical study which systematically observe a body of fact in relation to the structure and behavior of non-living and living organisms (animals, plants and humans) in the natural world through experiments.

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