Cell The Unit Of Life

Answer (c) Lipid synthesis

Cilia and flagella are extensions that arise from the cell membrane. Flagella are longer than cilia. Both structures are responsible for cell motility. The microscopic features of these two structures are also very similar. The central core is known as axoneme. These show nine pairs of microtubules that are arranged peripherally and one pair of microtubule is also seen in the centre. This is arrangement. The central tubules are connected to some peripheral tubules by means of a sheath.

Aleuroplast is a semi-autonomous organelle (plastid) within a plant cell that stores protein.

Rudolf Virchow (1859) said Omnis cellula ie cellula?, ie, all cells arise from the pre existing cells.

Dynein is a family of cytoskeletal motor proteins that move along microtubules in cells. They convert the chemical energy stored in ATP to mechnical work, and hence are involved in movement of cilia and flagella.

On the basis of their sedimentation coefficient ribosomes are of two main types and ribosomes are found in eukaryotes and ribosomes are found in prokaryotes, mitochondria and chloroplasts.

Omnis cellulae e cellula theory was given by Rudolph Virchow, which means every cell comes from another cell.