Ribose and Deoxyribose

Q. The pentose sugar in a nucleotide is in which of the following forms?

1. Pyranose
2. Furanose
3. Straight chain
4. Equilibrium between ring and straight chain forms

Q.

Does DNA contain uracil?

Q. The pentose sugar in a nucleotide is in which of the following forms?

1. Pyranose
2. Furanose
3. Straight chain
4. Equilibrium between ring and straight chain forms

Q. Removal of oxygen from the of the ribose sugar gives rise to a deoxyribose sugar molecule.

1. 1'-C
2. 2'-C
3. 3'-C
4. 5'-C

Q. Sugar found in DNA is _______.

1. Dextrose
2. Levulose
3. Glucose
4. Deoxyribose

Q.

Which purine base is found in RNA?

1. Thymine

2. Uracil

3. Cytosine

4. Guanine

Q. The difference between a ribonucleotide and a deoxyribonucleotide is_____.

1. Deoxyribonucleotide has an -- H instead of an --OH at C-2.
2. Deoxyribonucleotide has an $\alpha$ configuration; ribonucleotide has the $\beta$ configuration; at C-1.
3. Ribonucleotide has an extra --OH at C-4.
4. Ribonucleotide has more structural flexibility than deoxyribonucleotide.