Question

Which of the following would not be considered as part of a cell’s cytoplasm?
A. Ribosomes
B. Nucleus
C. Mitochondria
D. Microtubule

Answer 1

Hint:-A cell can be considered as the basic dynamic functional unit that is capable of performing different biological functions. The cell encloses the different types of units by a delimiting membrane. The cell membrane or the plasma membrane helps to separate the internal and external environment of the cell.

Complete Answer:-
The living cells are biological units that undertake all the various types of important biological processes. They are limited by a membrane that is known as the plasma membranes and it encloses the fluid or the matrix of the cell. The fluid inside the cell is referred to as the cytoplasm. Cytoplasm can be described as the gel like substance that contains the several internal substructures and inclusions.
The cytoplasm of the cell includes the various subunits of the cell which are known as the cell organelles. The cytoplasm is contained mostly in water and is usually a colorless substance. The various substances that are present inside the cell in the cytoplasm are ribosomes, mitochondria, Golgi bodies, lysosomes, as well as parts of the cytoskeletons and microtubules.
Nucleus is also present in the cells and are organelles that contain the genetic materials such as the DNA or RNA. The materials inside the nucleus are called as nucleoplasm and they are contained within the membrane called as the nuclear membrane. The nucleus is not considered as a part of the cytoplasm as the material contained in the nucleus is separated by the materials of the cytoplasm through the nuclear membrane. Ribosomes are organelles that are found either attached to other cell organelles or are freely in the cytoplasm and are associated with protein synthesis.
Mitochondria are double membraned organs that are found in most eukaryotic cell types. They are associated with the production of most of the energy molecules of the cells through the production of ATP productions. Microtubules are parts of cytoskeleton as they provide structure and shape to the cells. They are polymers of tubulin.
Thus, the right option is B.

Note:- The main parts of the cell is the cell or plasma membrane and the cytoplasm. The plasma membrane encloses the cytoplasm, which contains several different types of cell organelles. The cell organelles such as ribosomes, mitochondria and microtubules are part of the cytoplasm while the nucleus forms a distinct part that contains the nucleoplasm and surrounded by a nuclear membrane.