BIO 133 Exam 1 actual exam questions and verified answers
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Exam 1- Chapters 1-6
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Part 1 of 1 - 80.83/ 100.0 Points
Question 1 of 40
2.5/ 2.5 Points
What protein is matched with its function?
A. aquaporins – move water through the membrane by active transport
B. carrier protein – nonspecific and will allow material to pass directly through
C. channel protein – allow passage of material through the hydrophilic pore
, D. transport proteins – allow passage of material with the aid of ATP
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Question 2 of 40
2.5/ 2.5 Points
Indicate the statements that support the relationship between protein and structure.
A. A protein that unfolds or is incorrectly folded can use chaperones to correct the structure.
B. when some proteins are denatured, with return of the normal environmental conditions
they might refold.
C. A proteins final shape is determined by the secondary structure.
D. pH, temperature and agitation can denature proteins rendering them active.
E. A disease may occur if proteins do not fold correctly.
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Question 3 of 40
2.5/ 2.5 Points
In a chocolate bar with nuts and caramel, there are 12 grams of fat, 33 grams of carbohydrates
and 4 grams of protein. What percentage of calories comes from fat?
A. 6.5%
B. 19%
, C. 53%
D. 41
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Question 4 of 40
0.0/ 2.5 Points
Cholera kills over 100,000 people each year worldwide due to diarrhea. The cholera toxin opens
the CFTR chloride channel in the intestines, so that sufferers lose chloride, sodium and massive
amounts of water.
On the other hand, the same CFTR channel is mutated in cystic fibrosis patients. With activity
too LOW, they lack chloride flow and mucus builds up in the lungs.
This illustrates the importance of precise control of channel opening, known as
____________regulation.
A. gated
B. ungated
C. passive
, Feedback:Incorrect, give this question a try again
Question 5 of 40
2.5/ 2.5 Points
Normal (homeostatic) pH level of blood serum’s pH is around 7.4. Carbonic acid is released in
the blood to help maintain a pH that has high hydroxyl levels. This would cause pH to change
from
A. basic to acidic
B. basic to neutral
C. neutral to basic
D. acidic to 7.4
E. basic to 7.4
Feedback:Learning Objective: Discuss the role of acids, bases, and buffers in homeostasis.
already graded A+ latest updated
Exam 1- Chapters 1-6
Return to Assessment List
Part 1 of 1 - 80.83/ 100.0 Points
Question 1 of 40
2.5/ 2.5 Points
What protein is matched with its function?
A. aquaporins – move water through the membrane by active transport
B. carrier protein – nonspecific and will allow material to pass directly through
C. channel protein – allow passage of material through the hydrophilic pore
, D. transport proteins – allow passage of material with the aid of ATP
Feedback:Correct
Question 2 of 40
2.5/ 2.5 Points
Indicate the statements that support the relationship between protein and structure.
A. A protein that unfolds or is incorrectly folded can use chaperones to correct the structure.
B. when some proteins are denatured, with return of the normal environmental conditions
they might refold.
C. A proteins final shape is determined by the secondary structure.
D. pH, temperature and agitation can denature proteins rendering them active.
E. A disease may occur if proteins do not fold correctly.
Feedback:Correct
Question 3 of 40
2.5/ 2.5 Points
In a chocolate bar with nuts and caramel, there are 12 grams of fat, 33 grams of carbohydrates
and 4 grams of protein. What percentage of calories comes from fat?
A. 6.5%
B. 19%
, C. 53%
D. 41
Feedback:Correct!
Question 4 of 40
0.0/ 2.5 Points
Cholera kills over 100,000 people each year worldwide due to diarrhea. The cholera toxin opens
the CFTR chloride channel in the intestines, so that sufferers lose chloride, sodium and massive
amounts of water.
On the other hand, the same CFTR channel is mutated in cystic fibrosis patients. With activity
too LOW, they lack chloride flow and mucus builds up in the lungs.
This illustrates the importance of precise control of channel opening, known as
____________regulation.
A. gated
B. ungated
C. passive
, Feedback:Incorrect, give this question a try again
Question 5 of 40
2.5/ 2.5 Points
Normal (homeostatic) pH level of blood serum’s pH is around 7.4. Carbonic acid is released in
the blood to help maintain a pH that has high hydroxyl levels. This would cause pH to change
from
A. basic to acidic
B. basic to neutral
C. neutral to basic
D. acidic to 7.4
E. basic to 7.4
Feedback:Learning Objective: Discuss the role of acids, bases, and buffers in homeostasis.
