The polypeptide chains in a protein molecule usually do not _.
Correct answer: B. Lie flat
- A. Remain linear
- B. Lie flat
- C. Acquire coiling
- D. Acquire folding
Explanation
The correct answer is that polypeptide chains do not lie flat. The properties of amino acids, particularly the polar and nonpolar groups, lead to interactions that cause the polypeptide chains to coil and fold instead of lying flat. This is essential for the formation of the protein's secondary, tertiary, and quaternary structures, which are necessary for their biological function. In contrast, polypeptide chains do acquire coiling and folding as they form their complex three-dimensional structures.
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The chapter covers water's polarity and biological roles, carbohydrates, lipids, proteins and nucleic acids, including their monomers, bonds, structures and functions. It also distinguishes RNA from DNA and explains conjugated molecules such as glycoproteins, glycolipids and nucleoproteins, which combine organic molecules with a non-protein component.
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More Biological Molecules questions
The example of physiological effect of changing the amino acid sequence of a protein is:
For proper functioning, a protein should have its amino acids in:
Proteins in the human body are composed of unique and specific arrangement of:
The example of structural protein is:
One of the common secondary structure of protein is:
It is formed by folding back of the polypeptide chain: