Multiple Choice
Which of the following correctly describes the quaternary structure of a protein?
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4. Biomolecules
Proteins
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What happens if the shape of a protein is altered?
A
The protein will increase its solubility.
B
The protein may lose its function.
C
The protein will always become toxic.
D
The protein will become more stable.
Verified step by step guidance1
Proteins are made up of amino acids that fold into specific three-dimensional shapes, which are crucial for their function.
The shape of a protein is determined by its primary structure (sequence of amino acids), secondary structure (alpha helices and beta sheets), tertiary structure (overall 3D shape), and sometimes quaternary structure (arrangement of multiple polypeptides).
If the shape of a protein is altered, it can affect the protein's ability to bind to other molecules, which is often essential for its function.
Denaturation is a process where proteins lose their shape due to external stress like heat, pH changes, or chemicals, leading to loss of function.
Altered protein shapes can lead to diseases or dysfunctions, as seen in conditions like Alzheimer's disease, where misfolded proteins accumulate.
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