What are the repeating subunits in DNA called?
In DNA, the repeating units are nucleotides, with the sugar being a deoxyribose and the bases being adenine (A), thymine (T), guanine (G), and cytosine (C). In RNA, the sugar is a ribose and the base uracil (U) is used in place of thymine. DNA is the molecule of heredity in all prokaryotic and eukaryotic organisms.
What is the name given to subunits of DNA?
A nucleotide is a subunit of DNA or RNA that consists of a nitrogenous base (A, G, T, or C in DNA; A, G, U, or C in RNA), a phosphate molecule, and a sugar molecule (deoxyribose in DNA, and ribose in RNA). Adenine (A) is one member of the A-T (adenine-thymine) base pair in DNA.
What are the subunits of DNA replication?
In eukaryotes, DNA replication requires three DNA pols: one (DNA pol ε, composed of four subunits) for the leading strand and two (DNA pols α and δ, each composed of four subunits) for replication of the lagging strand. Mitochondrial DNA is replicated by a separate enzyme, DNA pol γ.
What are mRNA base triplets called?
Codons
A sequence of three successive nucleotide bases in the transcript mRNA is called a codon. Codons are complimentary to base triplets in the DNA.
What is the sequence of subunits in the DNA backbone?
(Deoxyribose is the name of the sugar found in the backbone of DNA.) In between the two sides of this sugar-phosphate backbone are four nitrogenous bases: adenine (A), thymine (T), cytosine (C), and guanine (G). (A grouping like this of a phosphate, a sugar, and a base makes up a subunit of DNA called a nucleotide.)
Which of the following is the structural subunit of DNA?
Nucleotides
Nucleotides are monomeric subunits that form DNA.
What are the bases of tRNA called?
Each codon has a complementary set of bases, called an anticodon. Anticodons are a part of transfer RNA (tRNA) molecules. Attached to each tRNA molecule is an amino acid — in this case, the amino acid is methionine (met).
What are catalytic subunits?
Catalytic subunit: This subunit contains the enzyme’s active site. It also contains a domain that binds ATP (the source of phosphate) and a domain that binds the regulatory subunit.
What is each three base triplet in tRNA called?
anticodon
This order is determined by the attraction between a codon, a sequence of three nucleotides on the mRNA, and a complementary nucleotide triplet on the tRNA, called an anticodon.