Question

8.3 cell transport
1.

1. the process by which particles move from an area of higher concentration to an area of lower concentration is known as
2. when the concentration of a substance is evenly distributed, it is called
3. the movement of molecules across the cell membrane without using energy is called

5.

1. water channel proteins are called
2. the diffusion of water through a selectively permeable membrane is called
3. what term means: same strength, above strength, below strength

9.

1. how do frog eggs avoid problems with osmotic pressure?
2. explain what will happen in the tube. (figure 8 - 19)

active transport

1. movement of materials against the concentration gradient that requires energy is transport.
2. the process of taking material into the cell by infolding the membrane:
3. what process is used by white blood cells to remove damaged or foreign cells?
4. cells release large amounts of material through the process of
5. what process is shown in the image? how do you know?

Explanation:

1. The state of relatively constant internal conditions is homeostasis.
2. Movement of particles from high to low concentration is diffusion.
3. When a substance is evenly distributed, it's equilibrium.
4. Movement of molecules across the cell - membrane without energy is passive transport.
5. Diffusion using special channels is facilitated diffusion.
6. Water - channel proteins are aquaporins.
7. The diffusion of water through a selectively permeable membrane is osmosis.
8. “Same strength” is isotonic, “above strength” is hypertonic, “below strength” is hypotonic.
9. Osmotic pressure can cause animal cells to swell or shrink.
10. Frog eggs avoid osmotic - pressure problems because they are surrounded by a jelly - like coating that helps regulate water movement.
11. In the U - tube with a semi - permeable membrane, water will move from the side with lower solute concentration to the side with higher solute concentration until equilibrium is reached.
12. Movement of materials against the concentration gradient that requires energy is active transport.
13. The process of taking material into the cell by infolding the membrane is endocytosis.
14. White blood cells use phagocytosis (a type of endocytosis) to remove damaged or foreign cells.
15. Cells release large amounts of material through the process of exocytosis.
16. If the image shows movement of particles from low to high concentration and requires ATP, it is active transport.

Answer:

1. Homeostasis
2. Diffusion
3. Equilibrium
4. Passive transport
5. Facilitated diffusion
6. Aquaporins
7. Osmosis
8. Isotonic; Hypertonic; Hypotonic
9. Osmotic
10. Surrounded by a jelly - like coating that helps regulate water movement
11. Water will move from the side with lower solute concentration to the side with higher solute concentration until equilibrium is reached
12. Active
13. Endocytosis
14. Phagocytosis
15. Exocytosis
16. If it shows movement of particles from low to high concentration and requires ATP, it is active transport.