Answer
Cell Structures and Their Functions
This table illustrates the relationship between specific cellular structures and their respective functions:
| Label | Structure | Function |
|---|---|---|
| A | Centromere | Cell division (site where spindle fibres attach during mitosis) |
| B | Cilium | Cell movement (helps in locomotion or movement of substances) |
| C | Cristae | Mitochondrion (infoldings of the inner mitochondrial membrane) |
| D | Cell membrane | Phospholipid bilayer (basic structure of the plasma membrane) |
Detailed Explanations
Centromere: Crucial for chromosome movement during cell division by serving as an attachment site for spindle fibres.
Cilium: Hair-like projections on cell surfaces that facilitate motion or transport of substances over the cell surface.
Cristae: The folded inner membrane of mitochondria, increasing surface area for ATP-producing enzymes during cellular respiration.
Cell membrane: A semi-permeable membrane composed of a phospholipid bilayer, controlling the transport of materials in and out of the cell.