Proteins: Introduction and Functions
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Questions and Answers

What is the term derived from a Greek word proteios, meaning first place?

  • Organic molecules
  • Amino acids
  • Nitrogenous compounds
  • Proteins (correct)

What type of proteins consists of more than one subunit?

  • Quaternary proteins (correct)
  • Secondary proteins
  • Tertiary proteins
  • Primary proteins

Which type of proteins has a folded structure from one subunit due to the presence of inter disulfide bond and inter hydrogen bonds?

  • Tertiary proteins (correct)
  • Secondary proteins
  • Primary proteins
  • Quaternary proteins

What did Dutch chemist G.J.Mulder find when investigating substances like those found in milk and egg?

<p>They could be coagulated on heating and were nitrogenous compounds (A)</p> Signup and view all the answers

What constitutes about 50% of the cellular dry weight?

<p>Proteins (C)</p> Signup and view all the answers

Study Notes

Protein Basics

  • The term "protein" is derived from the Greek word "proteios", meaning "first place".

Multimeric Proteins

  • Proteins consisting of more than one subunit are called multimeric proteins.

Monomeric Proteins

  • Proteins with a folded structure from one subunit, due to the presence of inter disulfide bonds and inter hydrogen bonds, are called monomeric proteins.

History of Proteins

  • Dutch chemist G.J. Mulder discovered proteins while investigating substances like those found in milk and egg.

Cellular Composition

  • Proteins constitute about 50% of the cellular dry weight.

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Learn about the fundamental role of proteins in the structure and function of living systems. Dive into the history of protein discovery and their significance in cellular composition.

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