Each codon codes for a specific amino acid.

As you can see, ribosomes are complex structures (ribonucleoprotein enzyme complexes).

Energy Cost for Protein Synthesis

DNA transcription is the process of making a single strand complementary RNA copy of DNA. Data is copied from the DNA to the RNA with the aid of the enzyme RNA polymerase. Using this process, the genetic information stored in the DNA is carried in the form of RNA to other parts of the cell. In eukaryotic cells a gene begins with a promoter region and an initiation code and ends with a termination code. However, the intervening gene sequence contains patches of nucleotides that have no meaning. If they were used in protein synthesis, the resulting proteins would be worthless. Eukaryotic cells prune these segments from the mRNA after transcription. RNA polmerase synthesizes a strand of pre-mRNA that initially includes copies of the meaningful mRNA coding sequences (exons) and the meaningless mRNA coding sequences (introns). Soon after its manufacture, this pre-mRNA molecule has the meaningless introns clipped out and the exons spliced together in the final version of mature mRNA

The DNA code is a . Each triplet, a group of three bases, codes for a specific amino acid:

quiz protein synthesis - Biology Junction

Most enzymes work fastest in neutral conditions. Making the solution more acidic or alkaline will slow the reaction down. At extremes of pH the reaction will stop altogether. Some enzymes, such as those used in digestion, are adapted to work faster in unusual pH conditions and may have an optimum pH of 2 (very acidic) if they act in the stomach.

The main stages of protein synthesis are transcription and translation.

Sep 5, 1988. The trmD operon of Escherichia coli encodes the ribosomal proteins S16 and L19, the tRNAm1G37methyltransferase and a 21,000 Mr protein. TRNA, and that the synthesis of ribosomal protein, like the synthesis of rRNA, is subject to the influence of the rel gene control system. In exponentially growing.

Biology A Level, MCQ problem sets,Protein Synthesis, Dna and Rna will be available on


Drag-and-Drop Protein Synthesis: Quiz - zeroBio

This code determines the type of amino acids and the order in which they are joined together to make a specific protein. The sequence of amino acids in a protein determines its structure and function.

Protein synthesis :: DNA from the Beginning

Enzymes are biological catalysts which speed up the rate of chemical reactions, each enzyme being specifically
responsible for one reaction (or a few related reactions).

How are enzymes used in protein synthesis? - Quora

Most enzymes are proteins, but RNA
molecules can be enzymes too.

The ribosome is not only complex, but it is also the most important part of the biological cell, along with the necessary information
needed to make proteins (encoded in DNA or RNA).

Fidelity enzyme in protein synthesis-A DNA …

Genes within the nucleus of human cells determine the characteristics of each cell and ultimately, the characteristics of the entire organism. It is critical to recognize that genes are responsible for coding for specific structural and regulatory proteins. These proteins form the foundation for cellular function and include, for example, receptors, channels, and enzymes.

The Role of DNA in Protein and Enzyme Synthesis - …

Enzymes are large molecules that speed up the chemical reactions inside cells. Each type of enzyme does on specific job. Enzymes are a type of protein, and like all proteins, they are made from long chains of different amino acids.

Mechanism of Protein Synthesis: (i) ..

At low temperatures, enzyme reactions are slow. They speed up as the temperature rises until an optimum temperature is reached. After this point the reaction will slow down and eventually stop.