Group the following as nitrogenous bases and nucleosides: Adenine, Cytidine, Thymine, Guanosine, Uracil and Cytosine.

Group the following as Purines and Pyrimidines: Adenine, Thymine, Guanine, Uracil and Cytosine.

Which of the following nitrogenous base is NOT present in DNA?

Find the odd man out: Adenine, thymine, cytosine, uracil

Which of the following is absent in RNA? ………….. . Adenine Uracil Cytosine Thymine

Find the odd one out and give reason: Adenine, thymine Uracil, Guanine.

Complete the paragraph Fill in the blanks by selecting the correct word from the bracket and complete the given paragraph. (adenine, phosphoric acid, centromeres, cytosine, nucleotides, ribonucleic acid, guanine, thymine) In 1953, Watson and Crick produced a model of the DNA molecule. As per this model, each strand in the molecule of DNA is made up of many small molecules known as _________. There are four types of nitrogenous bases adenine, guanine, cytosine and thymine_________and __________are called as ‘purines’ while _________and_________ are called ‘pyrimidines’. In the structure of the nucleotide, a molecule of a nitrogenous base and _________are each joined to a molecule of sugar.

In the RNA molecule , which nitrogen base is found in place of thymine ?

Complete the analogy: Adenine and Guanine : Purine : : Cytosine and Thymine :……………..

In the RNA molecule, which nitrogen base is found in the place of thymine?

While analysing the DNA of an organism a total number of 5386 nucleotides were found out of which the proportion of different bases were: Adenine = 29%, Guanine = 17%, Cytosine = 32%, Thymine=17%.Considering theChargaff's.rule it can be concluded that: