1. A
2.c. Water would move into the cell
3.a. It provides energy
4.b. hypotonic
5. C. exoctyosis
Answer:
1-A. In facilitated diffusion, a special protein channel helps substances cross the cell membrane.
2-C. Water moves into the cell.
3-A. It provides the energy that cells need to move molecules against a concentration gradient.
4-A. hypertonic
5-C. exocytosis
Explanation:
1- The facilitated diffusion works in favor of a gradient, while active transport can work against it. In the diffusion provided no energy expenditure is needed, while in active transport it is. In the active transport specific transport proteins are needed, while in the diffusion facilitated not.
2-When a cell is in hypotonic conditions, there is a movement of water into the cell. Cells that have no cell wall swell and may explode.
3-ATP plays an important role in the transport of macromolecules such as proteins, lipids inside and outside the cell. The ATP molecule offers the energy needed for the active transport process to be carried out through a concentration gradient.
4-A hypertonic solution is the one that has a higher concentration of solute in the external environment than inside the cell, so that it loses water thanks to the pressure difference.
5- Exocytosis is the process of expelling wastes, products of digestion through vesicles of the Golgi apparatus.
