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1. Introduction to Microbiology3h 22m
2. Disproving Spontaneous Generation1h 18m
3. Chemical Principles of Microbiology3h 38m
4. Water1h 28m
5. Molecules of Microbiology2h 23m
6. Cell Membrane & Transport3h 28m
7. Prokaryotic Cell Structures & Functions5h 52m
8. Eukaryotic Cell Structures & Functions2h 18m
9. Microscopes2h 46m
10. Dynamics of Microbial Growth4h 36m
11. Controlling Microbial Growth4h 10m
12. Microbial Metabolism5h 16m
13. Photosynthesis2h 31m
14. DNA Replication2h 25m
15. Central Dogma & Gene Regulation7h 14m
16. Microbial Genetics4h 44m
17. Biotechnology3h 0m
18. Viruses, Viroids, & Prions4h 56m
19. Innate Immunity7h 15m
20. Adaptive Immunity7h 14m
21. Principles of Disease6h 57m

15. Central Dogma & Gene Regulation

Genetic Code

Microbiology

15. Central Dogma & Gene Regulation

Genetic Code

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Multiple Choice

A particular triplet of bases in the coding sequence of DNA is AAA. The anticodon on the tRNA that binds the mRNA codon is ________.

TTT.

UUA.

UUU.

AAA.

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Verified step by step guidance

Understand that DNA is transcribed into mRNA, where the base thymine (T) is replaced by uracil (U). Therefore, the DNA triplet AAA is transcribed into the mRNA codon UUU.

Recall that tRNA molecules have anticodons that are complementary to the mRNA codons. The anticodon is responsible for recognizing the mRNA codon during protein synthesis.

Determine the complementary bases for the mRNA codon UUU. In RNA, adenine (A) pairs with uracil (U), and uracil (U) pairs with adenine (A).

Since the mRNA codon is UUU, the complementary anticodon on the tRNA will be AAA, as U pairs with A.

Conclude that the anticodon on the tRNA that binds to the mRNA codon UUU is AAA, ensuring the correct amino acid is added during protein synthesis.