Question

The Genetic Code that directs protein synthesis in human is found in
A.No other kind of organism
B.Virtually all organism
C.All animals. But not plants
D.All multicellular not unicellular organism

Answer 1

The group of nucleotides that specify one amino acid is known as codon and the relationship between the sequences of amino acids in a polypeptide chain is called the genetic code.

Complete answer:
Let’s discuss the options and find out the correct answer
A. No other kind of organism:The protein based production system is derived from bacteria, yeast,baculovirus/insect, mammalian cells, and more recently filamentous fungi such as Myceliophthora thermophila.so this option is incorrect.

B. Virtually all organisms:A set of three nucleotides makes a codon which in turn codes for a specific amino acid. Genetic code is nearly universal and it is small or we can say as minor deviations in mitochondria and a few single-celled organisms, which signifies that a particular codon specifies a particular amino acid in all types of organisms. The mRNA codon "ACU" codes for threonine, irrespective of its source.This is correct option

C. All animals.But not plants:In Plants Translation occurs at the ribosome, which consists of rRNA and proteins. In translation, the instructions in mRNA are read following the tRNA brings the correct sequence of amino acids to the ribosome. Then rRNA helps bonds form between the amino acids, producing a polypeptide chain.This is an incorrect option.

D. All multicellular and unicellular organisms:Cells function differently in unicellular and multicellular organisms, but in every organism, each cell has specialized cell structures, or organelles, of which there are many. These organelles are responsible for a variety of cellular functions, such as obtaining nutrients, producing energy, and making proteins.This is an incorrect option.
Hence option “B” is correct.

Note: DNA is a genetic material and carries genetic information from cell to cell and generation to generation.In genetic code there are 64 possible codons, three of which indicate the end of a protein but do not code for amino acids . The remaining 61 codons make up the proteins for 20 amino acids.