Question

1. when the concentration of solute inside & outside a cell is the same, the cell has reached__. a. maximum concentration b. homeostasis c. osmotic pressure d. dynamic equilibrium 4. the diffusion of water across a selectively permeable membrane is called ________. a. active transport b. facilitated diffusion c. osmosis d. phagocytosis 5. energy for active transport comes from a cell’s ________. a. golgi complex b. nucleus c. mitochondria d. lysosomes 6. __________ transport requires energy from atp to move substances across membranes. a. passive b. active

Explanation:

1. When solute concentrations inside and outside a cell are equal, there is no net movement of solute, which is dynamic equilibrium. Homeostasis is a broader - term for maintaining a stable internal environment, osmotic pressure is related to the force driving water movement, and maximum concentration is not the correct term here.
2. Osmosis is specifically defined as the diffusion of water across a selectively permeable membrane. Active transport requires energy and moves substances against a concentration gradient, facilitated diffusion uses transport proteins but is for substances other than just water, and phagocytosis is the engulfing of large particles by a cell.
3. Mitochondria are the power - houses of the cell and produce ATP, which is used as the energy source for active transport. The Golgi complex is involved in modifying, sorting, and packaging proteins and lipids, the nucleus contains the cell's genetic material, and lysosomes contain digestive enzymes.
4. Active transport requires energy from ATP to move substances across membranes against their concentration gradient, while passive transport does not require ATP.

Answer:

1. D. dynamic equilibrium
2. C. osmosis
3. C. mitochondria
4. B. Active