Question

1. If a cell blocked the entrance of a specific molecule, which organelle would perform that function?
2. You forgot to water your house plants when you went on vacation. Upon your return you notice that they’re severely wintered. What cell organelle is involved?
3. Which organelle can only perform its functions during the daytime? Why?
4. Bacteria also have cell walls, but they’re made of different materials and have a different type of construction than plant cell walls. Several types of antibiotics target and damage the cell wall killing bacteria. Why are these medications safe for people to take?

Answer 1

Answer

When a cell blocks a specefic molecule from entering into the cell it is the cell membrane which blocks its entry ino the cell as cell membrane is semipermeable.

when plants are severely wilted then the plant cell organelle central vacuole is involved as central vacuole maintains the turgidity of the plant cell.

The organelle which can perform its functions only during the daytime is chloroplast, because it contains chlorophyll which uses sunlight to synthesize food for plants by using carbon dioxide and water.

Antibiotics which damage cell wall in bacteria are safe for people because animal (human) cells do not have cell wall.