Question

q.5. which of the following statements about the cell membrane is false? a) it is made up of a phospholipid bilayer. b) it is selectively permeable that allows certain substances to enter and leave. c) it surrounds the cytoplasm of the cell and regulates what enters and exits the cell. d) all the movement of particles across the cell membrane requires energy. q.6. the diagram shows the movement of dye particles across a membrane over time. which type of transport occurs in the diagram shown above? a) facilitated diffusion b) diffusion c) exocytosis d) endocytosis q.7. which one of the following terms is defined as the movement of molecules from high concentration to lower concentration through transport proteins in the cell membrane without using energy? a) facilitated diffusion b) diffusion c) exocytosis d) endocytosis q.8. which one of the following terms is defined as the diffusion of water through a selectively permeable membrane? a) exocytosis b) endocytosis c) homeostasis d) osmosis q.9. which of the following statements about active transport is false? a) in active transport, particles move against the concentration gradient. b) energy is required in active transport. c) in active transport, particles move from higher concentration to lower concentration. d) the sodium - potassium pump is an example of active transport. q.10. which one of the following terms is defined as the ability to maintain a stable internal condition? a) diffusion b) endocytosis c) homeostasis d) osmosis q.11. what type of transport occurs during the gas exchange (respiration) in the lungs? a) diffusion b) endocytosis c) homeostasis d) osmosis q.12. the rate of diffusion ____________ as the temperature increases. a) decreases b) does not change c) increases

Explanation:

Q.5: The cell membrane is made of a phospholipid bilayer, is selectively permeable, and surrounds the cytoplasm regulating what enters and exits. Not all particle - movement across it requires energy.
Q.6: The diagram shows particles moving from high to low concentration without energy input and without transport proteins, which is diffusion.
Q.7: Facilitated diffusion is the movement of molecules from high to low concentration through transport proteins without using energy.
Q.8: Osmosis is defined as the diffusion of water through a selectively permeable membrane.
Q.9: In active transport, particles move against the concentration gradient and energy is required. It is not from high to low concentration (that's passive transport).
Q.10: Homeostasis is the ability to maintain a stable internal condition.
Q.11: Gas exchange in the lungs occurs by diffusion as oxygen and carbon - dioxide move from high to low concentration areas.
Q.12: The rate of diffusion increases as temperature increases because higher temperature gives particles more kinetic energy.

Answer:

Q.5: d
Q.6: b
Q.7: a
Q.8: d
Q.9: c
Q.10: c
Q.11: a
Q.12: c