Textbook Question
Why are misfolded proteins a potential problem for the eukaryotic cell, and how do cells combat the accumulation of misfolded proteins?
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11. Translation
Proteins
Multiple Choice
Which chemical element is found in both DNA and proteins?
A
Sulfur (S)
B
Iodine (I)
C
Sodium (Na)
D
Nitrogen (N)
Verified step by step guidance1
Understand the composition of DNA and proteins by identifying the key elements present in each macromolecule.
Recall that DNA is composed of nucleotides, which include a sugar, phosphate group, and nitrogenous bases; thus, nitrogen is a key element in the bases.
Recognize that proteins are made up of amino acids, which contain nitrogen in their amino group (-NH2).
Compare the given options (Sulfur, Iodine, Sodium) with the known elements in DNA and proteins to determine which element is common to both.
Conclude that nitrogen (N) is the element found in both DNA (in nitrogenous bases) and proteins (in amino groups), making it the correct answer.
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