DNA

Q. Which of the following is correct statement regarding RNA and DNA respectively?

1. The sugar component in RNA is a arabinose and the sugar component in DNA is ribose.
2. The sugar component in RNA is 2' – deoxyribose and the sugar component in DNA is arabinose
3. The sugar component in RNA is arabinose and the sugar component in DNA is 2' – deoxyribose.
4. The sugar component in RNA is ribose and the sugar component in DNA is 2' - deoxyribose.

Q. why nh3 have all equal bond lengt

Q. 15. Why cant SiO2 form structure like CO2?

Q. In DNA, the linkages between different nitrogenous bases are

1. phosphate linkage
2. H - bonding
3. glycosidic linkage
4. peptide linkage

Q. If the total amount of adenine and thymine in a double-stranded DNA is 60%, then the amount of guanine in this DNA will be

1. 15%
2. 20%
3. 30%
4. 40%

Q. Which of the following options is not true about DNA?

1. Inorganic component present in DNA is phosphite
2. Sugar component present in DNA is D-2-deoxyribose
3. 5-methyl uracil is present in DNA
4. Thymine is present in DNA

Q. One strand of DNA has sequence of nucleotide 3 ‘ATTCGCTAT 5’ then other strand of DNA has

1. 3 ‘TAAGCGATA 5’
2. 3 ‘TAGCACGTA 5’
3. 5 ‘TAGCACGTA 3’
4. 5 ‘TAAGCGATA 3’

Q. Ribose and 2-deoxyribose can be differentiated by
(JEE Main Online, 2013)

1. Fehling's reagent
2. Tollens' reagent
3. Osazone formation
4. Barfoed's reagent

Q. what is meant by ionisation

Q. The central dogma of molecular genetics states that the genetic information flows from :

1. DNA $\to$ RNA $\to$ Proteins
   
2. DNA $\to$ RNA $\to$ Carbohydrates
3. Amino acids $\to$ Proteins $\to$ DNA
4. DNA $\to$ Carbohydrates $\to$ Proteins