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A compound formed by the linking of a mo...

A compound formed by the linking of a molecule of nitrogenous base with a pentase sugar with the help of glycosidic bond.

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nucleoside
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A compound formed by one molecule each of pentose sugar,phosphate and nitrogenous base.

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Read the following statements and choose the correct option. (a) Nitrogenous base is linked to the pentose sugar through a N-glycosidic linkage. (b) phosphate group is linked to 5^' -OH of a nucleoside through phosphester linkage. [c) Two nucleoside are linked through 3^'-5^' N-glycosidic linkage. (d) Negatively charged DNA is wrapped around positively charged histone octamer to form nucleosome. (e) The chromatin that is more densely packed and stains dark is called euchromatin.

Correct the statements if required by changing the underlined words: Nitrogenous base and sugar form nucleotide.

Answer the following in one word only. Nitrogen base + Sugar + phosphate can be substitued by the word.

How many (pi) -bonds are there in the nitrogen molecule ?

Why does argon not form diatomic molecules like oxygen and nitrogen? Write two uses of argon.

Read the given statements. (i) Fructose is the sweetest sugar. (ii) Glycine is the simplest amino acid. (iii) Lactose is a disaccharide composed of one molecule each of glucose and galactose. (iv) Cellulose is an unbranched chain of glucose molecules linked by beta-1 , 4-glycosidic bond. Which of the given statements are correct ?

The four nitrogen base sequences which form the code words for DNA language are :

MBD PUBLICATION-MOLECULAR BASIS OF INHERITANCE-QUESTION BANK
  1. The process of formation of proteins on mRNA.

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  2. Unidirectional flow of information fromDNA toRNA to protein .

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  3. A compound formed by the linking of a molecule of nitrogenous base wit...

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  4. Frederich Griffith discovered the phenomenon called .

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  5. Okazaki fragments are formed on strand of replicating DNA.

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  6. Flow of information from DNA to protein is called .

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  7. Clover leaf structure is shown by .

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  8. The gene whose expression is regulated is gene.

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  9. Termination codons are called Ochre, Amber and .

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  10. Determination of hereditary characters by the DNA is due to the arrang...

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  11. Split geen is seen in .

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  12. The DNA molecule takes a complete turn after every base pairs.

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  13. A nucleotide consists of a a and a nitrogen base.

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  14. The experiment on DNA using.^15N isotope prove that its replication is...

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  15. are the enzymes which unwind DNA.

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  16. New strands of DNA are formed only in the direction.

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  17. The unidirectional flow of genetic information from DNA to RNA to Prot...

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  18. The process by which DNA of nucleus passes information to RNA is calle...

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  19. A set of three nucleotides that codes for an amino acids.

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  20. is a segment of DNA strand on which a new strand is produced.

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