While explaining cell organelles, in ribosomes, the suffix ‘s’ in ribosome unit indicates: (JRF Plant Science 2019)

✅Explanation: The 's' in ribosome units (like 70s or 80s) stands for Svedberg unit, which is a measure of the sedimentation coefficient. This coefficient reflects the size, shape, and density of a particle, and it determines how fast the particle settles during centrifugation.

📌Other Options Explanations:
-Sedimentation area: This refers to the area where particles settle during centrifugation.
-Surface area: This is the total area covering the surface of an object.
-Structural protein: These are proteins that contribute to the structural framework of a cell or organelle.

🔑Key Points:
-Ribosomes are the organelles that are made up of ribosomal RNA and proteins.
-Ribosomes are responsible for the synthesis of proteins in the cell.
-Ribosomes can be found in both prokaryotic and eukaryotic cells.
-Ribosomes can be free in the cytoplasm or attached to the rough endoplasmic reticulum.
-Nucleus is the organelle that contains the genetic material of the cell and is responsible for controlling the cell's activities.  
-Golgi body is responsible for processing and packaging proteins and lipids that are synthesized in the cell.
-Lysosome is an organelle that contains digestive enzymes and is responsible for breaking down waste materials in the cell.