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Multiple Choice
Which of the following is a substrate for DNA polymerase?
A
Fatty acids
B
Amino acids
C
Ribonucleoside triphosphates (rNTPs)
D
Deoxyribonucleoside triphosphates (dNTPs)
Verified step by step guidance
1
Understand the role of DNA polymerase: DNA polymerase is an enzyme that synthesizes DNA molecules from deoxyribonucleotides, the building blocks of DNA.
Identify the substrates for DNA polymerase: The substrates for DNA polymerase are deoxyribonucleoside triphosphates (dNTPs), which include dATP, dTTP, dCTP, and dGTP.
Differentiate between ribonucleoside triphosphates (rNTPs) and deoxyribonucleoside triphosphates (dNTPs): rNTPs are used in RNA synthesis, while dNTPs are used in DNA synthesis.
Eliminate incorrect options: Fatty acids and amino acids are not involved in the synthesis of DNA; they are involved in lipid and protein synthesis, respectively.
Conclude that deoxyribonucleoside triphosphates (dNTPs) are the correct substrates for DNA polymerase, as they provide the necessary components for DNA strand elongation.