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#Question id: 4945


Which is a defining characteristic that all protobionts had in common?

#XL - T Zoology
  1. the ability to synthesize enzymes

  2. a surrounding membrane or membrane-like structure

  3.  RNA genes

  4.  a nucleus


Answer:- Option(s): 2


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#Question id: 676

#XL - Q Biochemistry

What would you expect about the formation of an α-helix for a segment of a protein chain that contains lysine approximately every fourth residue with all other residues being mostly hydrophobic?

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#Question id: 683

#XL - Q Biochemistry

Which factor does not help to explain why many proteins exhibit quaternary structure?

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#Question id: 684

#XL - Q Biochemistry

Protein subunits in a multisubunit protein are held to each other primarily by

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#Question id: 685

#XL - Q Biochemistry

A protein has a molecular weight of 5600 daltons; its subunits are about 1960 daltons. There are ________ protein chains per oligomer.

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#Question id: 686

#XL - Q Biochemistry

Which is not an example of an oligomeric protein?

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#Question id: 687

#XL - Q Biochemistry

All of the following are considered “weak” interactions in proteins, except:

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