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marissa [1.9K]
4 years ago
15

Which structural organizations are always present in proteins? A- Primary and Secondary B- Secondary and Tertiary C- Tertiary an

d Quaternary D- Primary and Tertiary
Biology
1 answer:
Tom [10]4 years ago
8 0

Answer:

A. Primary and Secondary

Explanation:

This is because these are the two most basic and lowest levels of structural organization in proteins and therefore shared amongst all proteins. Primary structure is simply a chain of amino acids, secondary structure is either an alpha-helix or a beta-pleated (accordion) sheat formed by hydrogen bonds between the backbones of the primary structure protein, tertiary is just a 3d shape formed by the interactions of R groups of the amino acids, and quarternary is still 3d but made up of 1 or more sub 3-d shapes.

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Under physiological conditions, peptide bond formation and degradation both require enzymes, but only formation requires couplin
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Answer:

thermodynamically unstable but kinetically stable.

Explanation:

The complete question is as follows:

Under physiological conditions, peptide bond formation and degradation both require enzymes, but only formation requires coupling to GTP hydrolysis. Based on this information, peptide bonds under physiological conditions are:

A. both thermodynamically and kinetically stable.

B.thermodynamically unstable but kinetically stable.

C.thermodynamically stable but kinetically unstable.

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  • The reason why one can conclude the thermodynamic instability of the peptide bonds under physiological condition is that there is a need for a source of energy i.e. GTP hydrolysis for the formation of the peptide bond.
  • The fact that the breakage of peptide does not require any input of energy but the only formation does confirms the fact that under physiological conditions they are thermodynamically unstable.
  • Even though they are thermodynamically unstable, they are kinetically stable because both the formation and degradation require enzymes.
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3 years ago
What are TWO factors that could affect the rate of diffusion?
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Answer:

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Explanation:

8 0
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