PATHOLOGY MCQ
CELL DAMAGE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The number of adenines and cytosines determines the type of RNA that will be produced
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The order of nitrogenous bases determines the order of amino acids in the proteins synthesized
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The type of hydrogen bonding between the nitrogenous bases determines which amino acid will be added to the peptide chain
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The amount of thymine and guanine in the DNA molecules determines the length of the genes
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Detailed explanation-1: -Nitrogenous bases are located on both strands of the DNA double helix. What is the significance of the nitrogenous bases? The number of adenines and cytosines determines the type of RNA that will be produced. The order of nitrogenous bases determines the order of amino acids in the proteins synthesized.
Detailed explanation-2: -A DNA molecule consists of two strands wound around each other, with each strand held together by bonds between the bases. Adenine pairs with thymine, and cytosine pairs with guanine. The sequence of bases in a portion of a DNA molecule, called a gene, carries the instructions needed to assemble a protein.
Detailed explanation-3: -Under normal circumstances, the nitrogen-containing bases adenine (A) and thymine (T) pair together, and cytosine (C) and guanine (G) pair together. The binding of these base pairs forms the structure of DNA .
Detailed explanation-4: -This complementary base-pairing enables the base pairs to be packed in the energetically most favorable arrangement in the interior of the double helix. In this arrangement, each base pair is of similar width, thus holding the sugar-phosphate backbones an equal distance apart along the DNA molecule.
Detailed explanation-5: -The sequence of basis on the DNA molecule is what directs the sequence of amino acids in the protein molecule-that’s how it all links together! So, the sequence of bases in DNA codes for the sequence of amino acids of a protein.