Cell - The Unit of Life — Important Questions

Cell is the smallest unit of structure of all living things, Cell is the unit of function of all living things, All cells arise from pre-existing cells

The cell theory has three main points: cells are the basic structural unit, functional unit, and all cells come from existing cells. Not all cells have chloroplasts, and cells cannot be created from non-living matter.

True

The cell membrane is selectively permeable, meaning it allows only certain substances to pass through while preventing others from entering or leaving the cell.

Chlorophyll

Chloroplasts are green because they contain the pigment chlorophyll. The chapter states that chloroplasts are green coloured plastids and that chlorophyll is their green pigment. Other pigments like carotene and xanthophyll are associated with other colours, while anthocyanins are not plastid pigments.

Ribosome - Protein synthesis

Each organelle has specific functions: ribosomes make proteins, lysosomes digest waste, Golgi apparatus packages and secretes materials, and nucleus controls cell activities.