The primary structure of a protein is an alpha helix or a pleated sheet.   the amino acid sequence of the polypeptide chain.   composed of two or more polypeptide chains.   maintained by hydrogen bonds.

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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The primary structure of a protein is
an alpha helix or a pleated sheet.
 
the amino acid sequence of the polypeptide chain.
 
composed of two or more polypeptide chains.
 
maintained by hydrogen bonds.
Expert Solution
Step 1

There are four essential biomolecules present in the living world:

  • Carbohydrates: sugars
  • Proteins: made up of amino acids
  • Fats: made up of fatty acids
  • Nucleic acids: the DNA and the RNA

All these biomolecules have distinct structures, functions and bonds between their monomer units.

For example, the carbohydrates are made up of  glycosidic bonds between the monomer units and are source of energy in the body while the nucleic acids have phosphodiester and hydrogen bonds and are the genetic material of the body.

 

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