5 Questions
What is the composition of a monomeric protein?
One polypeptide chain
What is the meaning of the Greek word 'proteios'?
Primary
What is the main difference between a dimeric and a tetrameric protein?
Number of subunits
What percentage of the cellular dry weight do proteins constitute?
50%
Where do proteins occur in the cell?
In every part of the cell
Study Notes
Protein Composition and Structure
- A monomeric protein is composed of a single polypeptide chain.
Etymology of Proteins
- The Greek word 'proteios' means 'of the first rank' or 'primary'.
Oligomeric Proteins
- A dimeric protein is composed of two polypeptide chains, whereas a tetrameric protein is composed of four polypeptide chains.
Cellular Importance of Proteins
- Proteins constitute about 10-15% of the cellular dry weight.
Cellular Distribution of Proteins
- Proteins occur throughout the cell, but their distribution varies depending on the cell type and function.
Test your knowledge of protein chemistry with this quiz from MBBS Batch 53 Block 1. Learn to classify proteins based on composition, functions, and shape, and distinguish between globular and fibrous proteins. Explore the meaning of protein and its significance in biochemistry.
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