1. Membrane Structure and Function
Chapter 7
Membrane Structure and Function

2. Which of the following macromolecules is
primarily responsible for the insolubility of
cell membranes in water?
starch
cellulose
protein
phospholipid
glycogen
Answer: d

3. All of the following are typical components
of the plasma membrane of a eukaryotic
cell EXCEPT
glycoproteins
cytochromes
cholesterol
phospholipids
integral proteins
Answer: b

4. A B C D E Cell recognition component 2. Hydrophobic Answer: A
portion of protein
3. Cholesterol
4. Carrier for cell
transport
Answer: A A
Answer: D
Answer: E B C D
Answer: B E

5. Which of the following is an example of active transport
across a membrane?
The movement of water from a nephron into the
collecting duct of the kidney.
b. The movement of glucose by facilitated diffusion
into a liver cell.
c. The movement of water from the inside of a cell into
a surrounding hypertonic medium.
d. The movement of Na+ into a neuron as a nerve
impulse is generated.
e. The movement of H+ into a thylakoid disc during
photosynthesis.
Answer: e

6. "Sandwich" model

7. "Fluid"
More unsaturated=
More fluid

8. a) Describe how the properties of
2003B- Water is important for all living things.
The functions of water are directly related
to its physical properties.
a) Describe how the properties of
water contribute to the following:
plasma membrane structure

9. "Mosaic"
Antibody tagging
TEM pictures
Cell fusion

11. Types of Proteins

12. 2001- Proteins- large complex molecules- are
major building blocks of all living organisms.
Discuss the following in relation to proteins.
(c) The roles of proteins in membrane
structure and transport of molecules
across the membrane.

13. Bifacial

14. Carbohydrates

17. hypotonic
hypertonic

18. Excretion

19. Facilitated Diffusion

20. Active Transport
cotransport

22. Endocytosis
phagocytosis

23. pinocytosis

25. Cell Communication
"Cell Signaling"

26. Transduction

27. Direct Contact

34. Apoptosis

35. Question #2: 1999
Communication occurs among the cells in a multicellular organism.
Choose THREE of the following examples of cell-to-cell
communication, and for each example, describe the
communication that occurs and the types of responses that result
from this communication.
Communication between two plant cells
Communication between two immune system cells
Communication either between a neuron and another neuron,
or between a neuron and a muscle cell
Communication between a specific endocrine-gland cell and
its target cell

36. Question #4: 2003
Death is a natural and necessary part of life cycles at all levels of
Organization.
(a) Discuss TWO examples of how cell death affects the
development and functioning of a multicellular organism.
(b) Discuss ONE exmple of how substances are degraded
and reused in cells.
(c) Discuss the evolutionary significance of death.

37. Which of the following macromolecules is
primarily responsible for the insolubility of
cell membranes in water?
starch
cellulose
protein
phospholipid
glycogen
Answer: d

38. All of the following are typical components
of the plasma membrane of a eukaryotic
cell EXCEPT
glycoproteins
cytochromes
cholesterol
phospholipids
integral proteins
Answer: b

39. Which of the following is an example of active transport
across a membrane?
The movement of water from a nephron into the
collecting duct of the kidney.
b. The movement of glucose by facilitated diffusion
into a liver cell.
c. The movement of water from the inside of a cell into
a surrounding hypertonic medium.
d. The movement of Na+ into a neuron as a nerve
impulse is generated.
e. The movement of H+ into a thylakoid disc during
photosynthesis.
Answer: e

40. A B C D E Cell recognition component 2. Hydrophobic Answer: A
portion of protein
3. Cholesterol
4. Carrier for cell
transport
Answer: A A
Answer: D
Answer: E B C D
Answer: B E