BIOMOLECULES AND ENZYMES

BIOLOGY

NUCLEIC ACIDS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is pyrimidine?
A
Cytosine is an example of this category of nucleotides, This type of nucleotide has a shorter base, Thymine is an example of this category of nucleotides, This is the opposite of a purine
B
These are formed between codons and anti-codons in ribosomes
C
These join together to form either RNA or DNA
D
None of the above
Explanation: 

Detailed explanation-1: -Listen to pronunciation. (SY-toh-seen) A chemical compound that is used to make one of the building blocks of DNA and RNA. It is a type of pyrimidine.

Detailed explanation-2: -Two major purines present in nucleotides are adenine (A) and guanine (G), and three major pyrimidines are thymine (T), cytosine (C), and uracil (U). DNA contains A, T, G, and C, and RNA contains A, U, G, and C as bases.

Detailed explanation-3: -These chemical bonds act like rungs in a ladder and help hold the two strands of DNA together. There are four nucleotides, or bases, in DNA: adenine (A), cytosine (C), guanine (G), and thymine (T). These bases form specific pairs (A with T, and G with C).

Detailed explanation-4: -It is a pyrimidine derivative, with a heterocyclic aromatic ring and two substituents attached (an amine group at position 4 and a keto group at position 2). The nucleoside of cytosine is cytidine. In Watson-Crick base pairing, it forms three hydrogen bonds with guanine.

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