Q.Peculiarities of certain cell organelles are given below :
a. Involved in protein synthesis.
b. Made up of many flat, disc shaped sacs or cisternae.
c. Bear ribosomes on their surface.
d. Rich in hydrolytic enzymes.
e. Membrane is absent.
Copy the table given below and write the above peculiarities in appropriate column.
Table columns: Lysosome | Golgi apparatus | Ribosome

Learning cell biology can feel like walking into a busy workshop where every tool has a job — and the skill you are really building is matching each organelle to the task it performs. Once you can pair a structure with its function on sight, the whole cell stops being a jumble of names and starts making sense as an organised, cooperating team.

Here is a practical set of pairings that come up again and again:

• Nucleus — control and heredity. It directs the activities of the other organelles and holds the chromatin (DNA), the cell's hereditary information.
• Mitochondria — energy. Aerobic respiration happens here, generating ATP, which is why they are called the power houses of the cell.
• Chloroplast — capturing light. Found in plant cells, it holds chlorophyll and traps light energy for photosynthesis.
• Ribosome — protein synthesis. The site where proteins are assembled; it has no membrane and can sit free in the cytoplasm or on the rough ER.
• Rough endoplasmic reticulum — protein-making highway. ER studded with ribosomes; abundant in cells that actively make and export proteins.
• Smooth endoplasmic reticulum — lipid factory. The main site for making lipids, and in animal cells, steroid hormones.
• Golgi apparatus — packaging and dispatch. It modifies, packages and sends materials to targets inside or outside the cell.
• Lysosome — the cell's stomach. Filled with hydrolytic enzymes that digest carbohydrates, proteins, lipids and nucleic acids.
• Vacuole — storage. A membrane-bound pocket (bounded by the tonoplast) that stores water, sap and waste; very large in plant cells.
• Cell wall — rigid support. A non-living outer layer in plants and fungi that gives shape and protection. …