Why Are There Only 45 Different TRNA Anticodons Rather Than

question 92

Multiple Choice

Why are there only 45 different tRNA anticodons rather than 64 to match each of the mRNA codons?

• A)The first nucleotide of a tRNA anticodon allows some flexibility or "wobble."
• B)The second nucleotide of a tRNA anticodon allows some flexibility or "wobble."
• C)The third nucleotide of a tRNA anticodon allows some flexibility or "wobble."
• D)The remaining 19 tRNA anticodons are used for initiation and termination of protein synthesis.

---

Definitions:

Cost Sharing

The practice of distributing the costs of a specific service or project among multiple parties.

Parabronchi Capillaries

Microscopic blood vessels found in the lungs of birds that facilitate gas exchange, part of a unique respiratory system structure involving parabronchi.

Gas Exchange

Gas exchange is the biological process through which organisms exchange oxygen and carbon dioxide with their environment, critical for respiration.

Parabronchi

Tubular structures in the respiratory system of birds that allow air to flow through the lungs in one direction, facilitating efficient gas exchange.