Cell Specialisation：练习题

Which adaptation of a red blood cell allows it to transport a greater volume of oxygen?

A scientist compares a muscle cell to a skin cell and finds that the muscle cell contains many more mitochondria. What is the significance of this difference?

The diagram of a root hair cell shows a significant extension of the cell membrane into the surrounding soil. Which statement best explains the physiological advantage of this structural adaptation for the uptake of minerals?

A specific cell type is observed to have an exceptionally high density of rough endoplasmic reticulum and Golgi bodies. Which of the following most likely describes the primary function of this cell?

If a mutation occurred that caused root hair cells to develop a thicker, less permeable cell wall, which process would be most immediately and severely inhibited?

Using the concept of cell specialisation, explain why a muscle cell contains a significantly higher density of mitochondria compared to a skin epithelial cell.

A specific poison inhibits the function of mitochondria. Explain why this would prevent a root hair cell from absorbing mineral ions against a concentration gradient.

Specialised cells have unique structural adaptations that allow them to perform specific functions. Answer the following questions regarding specialised cells.

A root hair cell is a highly specialised plant cell responsible for the uptake of water and mineral salts from the soil.

(a) Identify two structural features of the root hair cell that adapt it for its specific function.
(b) Explain why a root hair cell contains a large number of mitochondria, and relate this to the process of active transport of ions from the soil.