No, PCR (Polymerase Chain Reaction) does not amplify amino acids. Instead, PCR is a technique used to amplify segments of DNA. It copies specific DNA segments using cycles of heating and cooling. Amino acids are the building blocks of proteins, not nucleic acids like DNA or RNA. The synthesis and modification of amino acids and proteins are governed by the information encoded in the DNA that PCR amplifies. Thus, while PCR is critical in the processes leading to protein synthesis indirectly by amplifying the necessary genetic instructions, it does not directly deal with amino acids themselves. For studying or synthesizing proteins and amino acids, other methods such as peptide synthesis or recombinant DNA technology are appropriate.

Amino acids, the building blocks of proteins, are not stored in the body in the same way fats or carbohydrates are. Once ingested, amino acids are either used to synthesize new proteins, converted to other compounds, or used as energy. Excess amino acids can be converted into glucose or ketone bodies and used for energy, or they can be transformed into fat and stored in adipose tissue. However, there's no specific "storage form" for amino acids like there is for glucose (glycogen) or fats (triglycerides in adipocytes). The body maintains a pool of free amino acids in the blood and tissues, which can be drawn upon for protein synthesis as needed. Thus, to ensure a constant supply, a regular intake of protein-containing foods is necessary.

Yes, a transfer RNA (tRNA) molecule binds to a specific amino acid, facilitating its addition to a growing polypeptide chain during protein synthesis. This specificity is determined by the anticodon region of the tRNA molecule, a set of three nucleotides that pair with the complementary codon on mRNA in a process regulated by enzymes called aminoacyl-tRNA synthetases. Each type of tRNA is linked to only one particular amino acid, ensuring the correct translation of mRNA's genetic code into proteins. Thus, the tRNA acts as a key adapter molecule in protein synthesis, translating the nucleotide language of mRNA into the amino acid language of proteins.