In: Biology
For each of the following items indicate "A" if it is a typical
change occurring during apoptosis or "N" if it is a typical change
occurring during necrosis.
A N Release of small cell fragments
A N Involved in developmental regulation
A N Release of soluble protein into extracellular
A N Cell swelling
A N Triggers inflammation
A - Release of small cell fragments (1)
A - Involved in developmental process (2)
N - Release of soluble protein into extracellular (3)
N - Cell swelling (4)
N - Triggers inflammation (5)
Feature | Apoptosis | Necrosis |
Definition | Programme and coordinated cell death | Cell death along with degradation of tissue by hydrolytic enzyme |
Causativeagent | Physiologically and pathological process (Developemental process) (2) | Hypoxia, toxins |
Morphology | No inflammation seen | Inflammatory reaction always present (5) |
Death of single cell | Death of many adjacent cells | |
Cell shrinkage | Cell swelling (4) | |
Cytoplasmic blebs on membrane | Membrane disruption | |
Apoptotic bodies form from cell fragmentation (1) | Damaged organelles | |
Chromatin condensation | Nuclear disruption | |
Phagocytosis of apoptotic bodies by macrophages | Phagocytosis of cell debris by macrophages | |
Molecular changes | Lysosomes and other organelles intact | Lysosomal breakdown with liberation of hydrolytic enzyme (3) |
Triggered by intrinsic pathway, extrinsic pathway and caspases | cell death by ATP depletion, free radical injury | |
The points of the question have been mentioned in the chart to compare between two process.