AP Biology Review

1. AP Biology Review Chapters 7 & 8

2. Q • What part of the cell membrane enables the membrane to remain liquidy?

3. A • Cholesterol

4. Q • Which of the following molecules pass through the cell membrane easily? A. Small hydrophobic molecules B. Large and hydrophobic molecules C. Polar molecules

5. A • Small hydrophobic molecules

6. Q • Which type of proteins in the cell membrane are considered transmembrane proteins, because they go through the membrane.

7. A • Integral Proteins

8. Q • What is the function of the aquaporins in the cell membrane?

9. A • Allows water to pass through easily

10. Q • Which type of proteins of the cell membrane are NOT embedded?

11. A • Peripheral proteins

12. Q • What is the function of glycoproteins and glycolipids in the cell membrane?

13. A • Cell-Cell recognition

14. Q • 10% potassium chloride is _______ to 10% potassium chloride. • Hypertonic • Hypotonic • Isotonic

15. A • Isotonic

16. Q • Cells that live in a hypertonic solution are always fighting dehydration (the loss of water). True False

17. True

18. Q • Facilitated diffusion is a form of active transport? True False

19. A • False-Passive transport

20. Q • Active transport allows a cell to move molecules from an area of low concentration to an area of high concentration True False

21. A • True

22. Q • Name the 3 types of Passive transport & explain the types of molecules that they transport.

23. Osmosis • Diffusion (Simple) • Diffusion (Facilitated)

24. Q • Name this structure & show the hydrophillic and hydrophobic regions

25. A

26. Q • Name 2 differences between Active & Passive Transport

27. A • Active • Uses Energy from cell • Allows larger molecules to pass through • Passive • No Energy required • Small molecules and water can pass through

28. Q • _______________ is the movement of materials from a higher to a lower concentration

29. A • Passive transport

30. Q • The diagram below shows what cell process?

31. A • Exocytosis

32. Q The diagram below is composed of __________________.

33. A • Phospholipids

34. Q • Describe Endocytosis, name the 2 types of Endocytosis & explain the differences.

35. A • Endocytosis- • Active transport • Materials are engulfed into cell • 2 types • Pinocytosis-Ingests liquids • Phagocytosis- Ingests solids

36. Q • _______________ transport is the movement of materials from lower concentration to higher concentration as in the processes of phagocytosis and pinocytosis.

37. A • Activetransport is the movement of materials from lower concentration to higher concentration as in the processes of phagocytosis and pinocytosis.

38. Q Which cellular process is illustrated in the diagram below? The material is a liquid

39. A • Pinocytosis-Type of Endocytosis

40. Q • The diagram represents a cell in water. Formulas of molecules that can move freely across the membrane are shown. Some molecules are located inside the cell and others are in the water outside the cell. Based on the diagram of molecules below, what would most likely happen to these molecules after a few hours?

41. A • The concentration of CO2 will increase outside the cell

42. Q • The cell or plasma membrane is composed chiefly of two layers of ______________ with globular ______________ floating in these layers

43. A • The cell or plasma membrane is composed chiefly of two layers of lipids with globular proteinsfloating in these layers

44. Q • Describe Turgor Pressure

45. A • Pressure in plant cells from cell membrane exerting pressure on cell wall

46. Q • What is the function of structure E?

47. Supports cell membrane

48. Q • Identify structure D

49. Phospholipidbilayer

50. Q • Identify Structure A