What are the features of RNA?

RNA consists of ribose nucleotides (nitrogenous bases appended to a ribose sugar) attached by phosphodiester bonds, forming strands of varying lengths. The nitrogenous bases in RNA are adenine, guanine, cytosine, and uracil, which replaces thymine in DNA.

What are the 4 types of RNA and their functions?

4 Types of RNA

• Messenger RNA (mRNA) mRNA is translated into a polypeptide. (
• Transfer RNA (tRNA) tRNA will bind an amino acid to one end and has an anticodon on the other. (
• Ribosomal RNA (rRNA) Ribosomal RNA (rRNA) helps facilitate the bonding of amino acids coded for by the mRNA. (
• Micro RNA (miRNA)

What are the functions of mRNA tRNA and rRNA?

Messenger RNA (mRNA) molecules carry the coding sequences for protein synthesis and are called transcripts; ribosomal RNA (rRNA) molecules form the core of a cell’s ribosomes (the structures in which protein synthesis takes place); and transfer RNA (tRNA) molecules carry amino acids to the ribosomes during protein …

What are the features of DNA?

Salient Features of DNA Double-Helix

• It consists of two polynucleotide chains where the sugar and phosphate group form the backbone and the nitrogenous bases project inside the helix.
• The two polynucleotide chains have anti-parallel polarity i.e. if one strand has 5′ → 3′ polarity, the other strand has 3′ → 5′ polarity.

What are the four different types of RNA?

Attached to each sugar is one of four bases–adenine (A), uracil (U), cytosine (C), or guanine (G). Different types of RNA exist in the cell: messenger RNA (mRNA), ribosomal RNA (rRNA), and transfer RNA (tRNA).

What are the characteristics or features of the genetic code?

Characteristics of the Genetic Code

• The genetic code is universal. All known living organisms use the same genetic code.
• The genetic code is unambiguous. Each codon codes for just one amino acid (or start or stop).
• The genetic code is redundant. Most amino acids are encoded by more than one codon.

What are the three main features of DNA?

DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group and one of four types of nitrogen bases. To form a strand of DNA, nucleotides are linked into chains, with the phosphate and sugar groups alternating.