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After the condensation of the nucleus and the production of many blebs, the human cell will - swell and burst open, and its contents will be released into the surrounding environment - VCE - SSCE Biology - Question 17 - 2020 - Paper 1
Question 17
After the condensation of the nucleus and the production of many blebs, the human cell will - swell and burst open, and its contents will be released into the surro... show full transcript
Worked Solution & Example Answer:After the condensation of the nucleus and the production of many blebs, the human cell will - swell and burst open, and its contents will be released into the surrounding environment - VCE - SSCE Biology - Question 17 - 2020 - Paper 1
Step 1
swell and burst open, and its contents will be released into the surrounding environment.
Answer
When a human cell undergoes necrosis, it typically swells and ruptures. This process is usually due to cellular stress or damage that disrupts the integrity of the cell membrane. As the cell swells, the cytoplasm increases in volume and eventually leads to the formation of blebs, which are protrusions on the cell surface. Once the pressure within the cell exceeds the tensile strength of the membrane, it bursts, resulting in the release of its contents into the extracellular space.
Step 2
produce apoptotic bodies that are engulfed by phagocytes.
Answer
During apoptosis, a controlled form of cell death, the cell will fragment into smaller, membrane-bound structures known as apoptotic bodies. These bodies are marked for recognition and are efficiently engulfed by nearby phagocytes, such as macrophages, through a process known as phagocytosis. This process ensures that cellular remnants are removed in a clean manner without causing inflammation.
Step 3
become larger and be absorbed by adjacent cells.
Answer
In some cases, cells may undergo a process called hypertrophy, where they grow larger due to an increase in cell size. However, if the cell is influenced by neighboring cells, it could be absorbed through direct cellular interaction or signaling mechanisms. This usually occurs during tissue remodeling or healing.
Step 4
be completely broken down by lysosomes.
Answer
Lysosomes are organelles that contain digestive enzymes capable of breaking down various biomolecules. If a cell is targeted for degradation, its contents can be taken up by lysosomes, where they are hydrolyzed into simpler molecules. This process is essential for cellular turnover and recycling of components, providing substrates for new cellular synthesis.