Chapter 05 – Membranes
5-21
Clarify Question
•
What is the key concept addressed by the question?
•
What type of thinking is required?
•
What key words does the question contain and what do they mean?
Gather Content
•
What do you know about osmotic concentration? How does it relate to the question?
Consider Possibilities
•
What other information is related to the question? Which information is most useful?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 05 – Membranes
Chapter 05 – Membranes
39. A scientist performs an experiment in which they create an artificial cell with a
selectively permeable membrane through which only water can pass. They inject a 5M
solution of glucose into the cell and then place the cell into a beaker containing 10M glucose.
What effect do you expect to observe?
Chapter 05 – Membranes
5-24
Clarify Question
•
What is the key concept addressed by the question?
•
What type of thinking is required?
•
What key words does the question contain and what do they mean?
Gather Content
•
What do you know about osmotic concentration? How does it relate to the question?
Consider Possibilities
•
What other information is related to the question? Which information is most useful?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 05 – Membranes
40. Turgor pressure is observed when a plant cells environment is ________________.
41. What initiates the sodium-potassium pump?
Chapter 05 – Membranes
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42. Cyclodextrins are a group of compounds capable of removing cholesterol from
membranes. The effect most likely to have a large impact on cells as a result of cyclodextrin
treatment would be
Chapter 05 – Membranes
5-27
Clarify Question
•
What is the key concept addressed by the question?
•
What type of thinking is required?
•
What key words does the question contain and what do they mean?
Gather Content
•
What do you know about the role of cholesterol in membranes? How does it relate to the
question?
Consider Possibilities
•
What other information is related to the question? Which information is most useful?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 05 – Membranes
43. Membrane fluidity is affected by
44. GABA receptors play an essential role in neurotransmission in the central nervous
system. In response to the appropriate signal, these receptors open up and allow Cl– to flow
into the cell. Given this information, GABA receptors can be classified as a
Chapter 05 – Membranes
5-29
Clarify Question
•
What is the key concept addressed by the question?
•
What type of thinking is required?
•
What key words does the question contain and what do they mean?
Gather Content
•
What do you know about protein transporters? How does it relate to the question?
Consider Possibilities
•
What other information is related to the question? Which information is most useful?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
Chapter 05 – Membranes
5-30
more desirable result?
45. Protein X contains four transmembrane domains, a short N-terminus and a long C-
terminus. Following protein synthesis, the N-terminus of the protein faces the lumen (the
inside) of the ER. After protein X is transported to the cell surface via exocytosis, you would
expect the N-terminus of protein X to be
Chapter 05 – Membranes
Clarify Question
•
What is the key concept addressed by the question?
•
What type of thinking is required?
Gather Content
•
What do you know about how proteins are oriented in a membrane? What other
information is related to the question?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 05 – Membranes
46. Incubation of cells at 20C blocks the release of proteins from the trans-Golgi. Under
such conditions, you would expect to see
Chapter 05 – Membranes
5-33
47. While eating lobster for dinner one night your friend asks what you think might happen if
this marine invertebrate, which is normally isosmotic with respect to the surrounding
seawater, were to be moved to a bay with a slightly lower salt concentration instead of being
caught. You reply that, in order for the lobster to be isosmotic with respect to new
environment,
Clarify Question
•
What is the key concept addressed by the question?
•
What type of thinking is required?
Gather Content
•
What do you know about adaptation to a change in the salinity? What other information
is related to the question?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 05 – Membranes
48. If a cell has a normal osmotic pressure of 4500 mmHg and is placed into a solution with
an osmotic pressure of 3500 mmHg, what will happen to the cell?
Chapter 05 – Membranes
Clarify Question
•
What is the key concept addressed by the question?
•
What type of thinking is required?
Gather Content
•
What do you know about how a cell responds to differences in osmotic pressure? What
other information is related to the question?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Chapter 05 – Membranes
49. In individuals with normal blood sugar levels, glucose is reabsorbed into the bloodstream
in the kidney by members of the GLUT transporter family, which form an aqueous pore
across the membrane through which glucose can move passively. As a result, no glucose is
excreted in urine. However, in people with untreated diabetes mellitus, blood sugar levels are
high and glucose is often present in the urine. What can explain this occurrence?
Chapter 05 – Membranes
5-37
Clarify Question
•
What is the key concept addressed by the question?
•
What type of thinking is required?
Gather Content
•
What do you know about glucose movement through the GLUT transporter? What other
information is related to the question?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Chapter 05 – Membranes
5-38
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?
Check All That Apply Questions
5-39
50.
Receptor-mediated endocytosis brings in specific material by engulfing it in vesicles. What factors, either directly or
indirectly, are related to this process? Choose all that apply.
Multiple Choice Questions
Chapter 05 – Membranes
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51. Which mutations can interfere with the proper insertion of a protein in the plasma
membrane?
Clarify Question
•
What is the key concept addressed by the question?
•
What type of thinking is required?
Gather Content
•
What do you know about the amino acids found in a transmembrane domain? What
other information is related to the question?
Choose Answer
•
Given what you now know, what information and/or problem solving approach is most
likely to produce the correct answer?
Reflect on Process
•
Did your problem-solving process lead you to the correct answer? If not, where did the
process break down or lead you astray? How can you revise your approach to produce a
more desirable result?