Nucleotide

Q. In a 3.2 Kbp long piece of DNA, 820 adenine bases were found. What would be the number of cytosine bases?

1. 780
2. 1560
3. 740
4. 1480

Q.

Give reason: Histones are positively charged.

Q.

DNA molecule is negatively charged because of:

1. Nitrogenous bases

2. Deoxyribose sugar molecules

3. Alignment in 5’ 3’ direction

4. Phosphate groups

Q.

Name any 2 factors contributing to the stability of the helical structure towards DNA?

Q.

Nucleic acids are polymers of

1. Amino acids

2. Nucleotides

3. Nitrogenous bases

4. Nucleosides

Q.

Name the components of a nucleotide.

Q. Pick the right difference between a DNA and RNA

1. Sugar and phosphate
2. sugar and purines
3. purines and phosphate
4. sugar and pyrimidines

Q.

State whether true or false:

A nucleotide consists of a pentose sugar molecule, a nitrogenous base, and a phosphate group.

1. True

2. False

Q.

Give an example of a nitrogenous base in DNA.

Q.

why dna molecule more stable genetic material than rna?

Q. DNA fragments are:

1. Positively charged
2. Negatively charged
3. Neutral
4. Either positively or negatively charged depending on their size

Q.

What do nucleotides consist of? List any two structural differences between RNA and DNA.

Q.

Look at the following structure of a nucleotide, and identify the three labelled parts:

1. P-Sugar, Q-Nitrogenous base, R-Phosphate

2. P-Nitrogenous base, Q-Phosphate, R-Sugar

3. P-Phosphate, Q-Sugar, R-Nitrogenous base

4. P-Sugar, Q-Phosphate, R-Nitrogenous base

Q. Each nucleotide consists of a pentose sugar, nitrogenous base and a

1. phosphate group
2. sulphate group
3. ammonium group
4. chloride group

Q.

Name the nucleobase that base pairs up with thymine?

Q. Maam nucleic acid and nucleotides are bio macromolecules or bio micromolecules?

Q. Name two sulphur containing and two basic amino acids.

Q.

State whether true or false:

A nucleotide consists of a pentose sugar molecule, a nitrogenous base, and a phosphate group.

1. True

2. False

Q. Nucleic acids are macromolecules made up of amino acids.

1. True
2. False

Q.

DNA molecule is negatively charged because of:

1. Deoxyribose sugar molecules

2. Nitrogenous bases

3. Alignment in 5’$\to$ 3’ direction

4. Phosphate groups

Q.

DNA molecule is negatively charged because of:

1. Deoxyribose sugar molecules

2. Nitrogenous bases

3. Alignment in 5’$\to$ 3’ direction

4. Phosphate groups

Q. Explain the process of splicing, capping and tailing which occur duringtranscription in Eukaryotes.

Q. Name the repeating components of each DNA strand lengthwise.

Q.

Nucleic acids are polymers of

1. Amino acids

2. Nucleotides

3. Nucleosides

4. Nitrogenous bases

Q. Nucleic acids are macromolecules made up of amino acids.

1. True
2. False

Q. Each nucleotide consists of a pentose sugar, nitrogenous base and a

1. phosphate group
2. sulphate group
3. ammonium group
4. chloride group

Q.

Look at the following structure of a nucleotide, and identify the three labelled parts:

1. P-Sugar, Q-Nitrogenous base, R-Phosphate

2. P-Nitrogenous base, Q-Phosphate, R-Sugar

3. P-Phosphate, Q-Sugar, R-Nitrogenous base

4. P-Sugar, Q-Phosphate, R-Nitrogenous base

Q.

Nucleic acids are polymers of

1. Amino acids

2. Nucleotides

3. Nitrogenous bases

4. Nucleosides

Q. Nucleotides are monomers of DNA. What does each nucleotide consist of?

1. A nitrogenous base and a pentose sugar.
2. A nitrogenous base and a phosphate group.
3. A pentose sugar and a phosphate group.
4. A nitrogenous base, a pentose sugar and a phosphate group.

Q. RNAi process