Each polynucleotide of DNA is made up of small units called _____________.

Question

Question

This question was previously asked in

RPF Constable (2018) Official Paper (Held On: 03 Feb, 2019 Shift 2)

Answer 1

The correct answer is

Key Points

A nucleotide is the basic building block of nucleic acids, such as DNA and RNA.
Each nucleotide in DNA consists of a deoxyribose sugar, a phosphate group, and one of four nitrogenous bases:
- Adenine (A)
- Guanine (G)
- Cytosine (C)
- Thymine (T)
Polynucleotides are long chains of these nucleotides.

Additional Information

Option

Explanation

Nuclear membrane

The nuclear membrane, also known as the nuclear envelope, is not the correct answer.

This is a double membrane structure that surrounds the nucleus in eukaryotic cells.

It separates the contents of the nucleus from the rest of the cell.

Nuclei

Nuclei are not the correct answer. It is the plural form of the nucleus.

The nucleus is the large, membrane-bound organelle that contains the cell's genetic material in the form of DNA.

It controls many of the functions of the cell by regulating gene expression.

Nucleus

The nucleus is not the correct answer for the same reasons stated in option 3.

It is an organelle within eukaryotic cells that houses the cell's genetic material but is not a component of the DNA itself.