Question

Nucleoplasm is also called
A. Nuclear sap
B. Karyolymph
C. Both A and B
D. Nuclear matrix

Answer 1

Hint: Nucleoplasm is the living portion of the nucleus that is encircled by a nuclear membrane. The nucleoplasm has a complex chemical composition, it consists mainly of nuclear proteins, but it also includes other organic and inorganic materials like minerals, enzymes, proteins, and nucleic acids.

Complete step-by-step answer:
The nucleoplasm contains nucleoli and chromosomes. Several substances like enzymes and nucleotides, which direct activities that occur in the nucleus are dissolved in the nucleoplasm. The soluble, liquid part of the nucleoplasm is known as the nuclear hyaloplasm or nucleosol. Nucleoplasm is a kind of protoplasm that consists of thick fluid and constitutes chromatin fibres composed of DNA and is generally present in the nucleus of the eukaryotic cells. This fluid mainly comprises dissolved ions, water, and a complex mixture of molecules. Its main function is to serve as a suspension medium for the organelles of the nucleus. Nucleoplasm is also known as karyoplasm or nuclear sap. Other functions of nucleoplasm contain the maintenance of nuclear form and structure, and the transportation of molecules, ions, and other substances essential to cell metabolism and function. It is a very gelatinous, sticky liquid that supports the nucleoli and chromosomes. A soluble, fluid element of the nucleoplasm is known as the nuclear hyaloplasm. Nucleoplasm is located inside the nucleus and looks like cytoplasm in certain aspects.
Hence, the correct answer is option c.

Note: Nucleoplasm indicates soluble materials found inside the nucleus surrounded by the nuclear envelope. It consists of enzymatic proteins (for transcription of RNA and replication of DNA), ions, enzymes, ribonucleoproteins, and so on.