During a laboratory investigation, a plant cell and an animal cell are both placed into a hypotonic solution. While the animal cell swells and lyses (bursts), the plant cell remains structurally intact and builds internal turgor pressure. Which cellular structure prevents the plant cell from bursting, and which organelle maintains the internal hydrostatic pressure that pushes against it?
- AThe plasma membrane prevents bursting, while the chloroplast maintains turgor pressure.
- The cell wall prevents bursting, while the large central vacuole maintains turgor pressure.Cevap
- CThe central vacuole prevents bursting, while the cell wall absorbs excess intracellular water.
- DThe cell wall prevents bursting, while the mitochondrion generates osmotic water pressure.
Cevap
The cell wall prevents the plant cell from bursting, while the large central vacuole maintains turgor pressure.
Plant cells contain a rigid outer cell wall composed of cellulose that prevents the cell from bursting when water rushes in during exposure to a hypotonic environment. Inside the cell, the large central vacuole fills with water and exerts outward hydrostatic pressure (turgor pressure) against the cell wall, keeping the plant upright and firm.
Adım Adım Çözüm
Anahtar Kavram
Plant versus animal cellular structural adaptations under osmotic pressure
Tahmini Süre:1m 30s