Worksheet Chapter 2: Cell Biology and Organisation

1. Fill in the blank: The semi-permeable membrane that surrounds the central vacuole in a plant cell is called the ________.

2. Explain the structural adaptations of the following plant tissues for their specific functions: (a) Xylem vessel (b) Palisade mesophyll cell

3. Describe the osmoregulation process in Paramecium sp. when living in a freshwater environment.

4. True or False: Smooth endoplasmic reticulum is covered with ribosomes and involved in protein transport.

5. State two structural differences between a typical plant cell and a typical animal cell.

6. True or False: Muscle cells contain a high density of mitochondria to supply energy for muscle contraction.

7. Trace the sequence of cellular organelles involved in the production and extracellular secretion of an digestive enzyme (e.g., pancreatic amylase) from synthesis to final exocytosis.

8. Explain the role of lysosomes during phagocytosis in Amoeba sp.

9. A liver cell is actively involved in detoxifying drugs and synthesizing lipids. (a) Name the organelle present in high abundance in this cell. (b) Explain why muscle cells contain significantly more mitochondria compared to skin epithelial cells.

10. Which organelle is responsible for modifying, sorting, and packaging proteins into secretory vesicles?