Question

Nucleotides are made up of
(a)Glycerols, fatty acids, and phosphates
(b)Sugars, phosphates, and Nitrogenous bases
(c)Amino groups, hydrogens, and carboxyl groups
(d)Protons, neurons, and electrons
(e)Protons and neurons only

Answer 1

Hint: Nucleotides are organic molecules and the monomers of nucleic acids (both DNA and RNA). It has three main parts connected. Their connection is what gives the helix its unique structure.

Complete answer:
A nucleotide is composed of three main molecules that are a Nitrogenous base, a five-carbon sugar, and a phosphate group. The Nitrogenous base is also called nucleobase and is four in number in DNA- Guanine, Adenine, Cytosine, and Thymine. In RNA the thymine base is replaced by Uracil. The five-carbon sugar can be either deoxyribose or ribose and forms DNA or RNA according to that. The phosphate group contains one to three phosphates.
The Nitrogenous base and the pentose sugar together are called nucleoside, and further with the Phosphate group forms the nucleotide.
These nucleotides are not only constituents but also play roles in cellular energy storage and provision, cellular signaling, and enzymatic cofactors.

Therefore, the correct answer is "Sugars, phosphates, and Nitrogenous bases".

Note:
The nucleotides play an important role in metabolism at cellular levels and provide energy in the form of the nucleoside triphosphates, adenosine triphosphates, guanosine triphosphate, cytidine triphosphate, and uridine triphosphate. In nucleic acids, they contain either a purine or pyrimidine base and are termed as ribonucleotide if the sugar is ribose and deoxyribonucleotide if the sugar is deoxyribose. The phosphate group is attached to the sugar ring molecule of the adjacent nucleotide by an acid end to end long chain. The chain joints are what creates the backbone of a single or double helix.