Question

Pyknosis, Karyorrhexis, Karyolysis indicate that the cell is
A. Dead
B. Going to divide
C. Resting
D. Actively synthesizing the secretory granules.

Answer 1

Cell is the basic structural and functional unit of life. An organism consists of one or more cells. Under certain circumstances, the cell decreases its metabolic activities and enters the stage of apoptosis.

Complete answer: Cell consists of several cell organelles that help in performing various metabolic activities in cells. Metabolic activities taking place inside the cell decreases during cell death. Several morphological changes happen to the cell organelles during this period. Cell death is of two types. They are apoptosis and necrosis. Apoptosis is also known as programmed cell death. Apoptosis often occurs in a single cell or a small number of cells. It is not an inflammatory process. Necrosis is an inflammatory process in which many cells die at a time. Lysosomes are the membrane-bound cell organelles seen in eukaryotic cells. These vesicles contain several hydrolytic enzymes that cause apoptosis. So, lysosomes are also known as suicidal bags of the cell. During cell death, nuclei of the cell condense to form a compact material. It is an irreversible process and it can be viewed under a microscope. This process is called pyknosis. After condensation, the nuclear material gets converted into several fragments. This phenomenon is known as karyorrhexis. Distinct fragments of the nucleus will be seen under the microscope in this stage. During karyolysis, lytic enzymes present in the cells lyses the nucleus completely.
Hence, the correct option is A.

Note: Necrosis of several types. They are fat necrosis, caseous necrosis, gangrenous necrosis, liquefactive necrosis, coagulative necrosis, etc. The whole process may occur in a short time or can develop gradually.