Suppose you mix the following components of protein...

Suppose you mix the following components of protein synthesis in a test tube: amino acids from a rabbit, ribosomes from a dog, tRNAs from a mouse, mRNA from a chimpanzee, and necessary enzymes plus an energy source from a giraffe. If protein synthesis occurs, which animal's protein will be made? (a) rabbit (b) $\operatorname{dog}(c)$ mouse $(d)$ chimpanzee (e) giraffe

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Key Concepts

mRNA as the template for protein synthesis

In the process of protein synthesis, mRNA contains the genetic code that dictates the sequence of amino acids in the protein. Regardless of the source of other components, the mRNA determines the structure and identity of the resulting protein, as it serves as the template that guides the assembly of amino acids into a polypeptide chain.

Translation mechanism

Translation is the process by which ribosomes decode the mRNA sequence to synthesize proteins. tRNAs, charged with amino acids, pair with the corresponding codons on the mRNA, ensuring the amino acids are added in the correct order. This mechanism is fundamental to interpreting the genetic information embedded in mRNA.

Interchangeability and compatibility of protein synthesis components

Even when components such as ribosomes and tRNAs are sourced from different organisms, the translational machinery can still accurately read and translate mRNA. As long as the mRNA is functional and compatible with the translational apparatus, it will produce a protein that corresponds to its own sequence, highlighting the universal nature of the genetic code across species.

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