
AEC peer review 9/2
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Health Sciences
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University
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Medium
Leah Lorenz
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39 questions
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1.
MULTIPLE CHOICE QUESTION
30 mins • 1 pt
Which of the following are essential amino acids?
Lys, Gly, Ala, Val
Glu, Met, Tyr, Ser
His, Val, Thr, Lys
Cys, His, Val, Lys
2.
MULTIPLE CHOICE QUESTION
30 mins • 1 pt
After eating a Costco chicken, Anna begins studying how the body processes amino acids. She learns the alanine cycle is dependent on aspartate alanine aminotransferase (ALT) in the muscle and the liver. What vitamin deficiency would cause a disruption of this cycle?
B1
B9
B2
B6
3.
MULTIPLE CHOICE QUESTION
30 mins • 1 pt
Al presents to the ED with vomiting, confusion, slurred speech, and flapping tremors. He is found to have high levels of ammonia. Which compound is depleted in Al’s brain?
Glutamate
Ala
Gly
Gln
4.
MULTIPLE CHOICE QUESTION
30 mins • 1 pt
A 48-year-old homeless male presents with confusion and slurred speech. Physical examination reveals spider angiomas on the chest and flapping tremors on wrist extension. Labs reveal elevated AST and ALT levels. Where does the first step of this patient’s metabolic defect normally occur?
Hepatocyte cytosol
Hepatocyte mito
Myocyte cytosol
Neuronal mito
5.
MULTIPLE CHOICE QUESTION
30 mins • 1 pt
Calvin is wondering why amino acids must travel through a cell in order to get into the blood. What structure(s) in adjacent enterocytes prohibit passage of materials in the extracellular space?
desmosomes and tight junctions
tight junctions and cadherins
gap junctions
desmosomes and cadherins
6.
MULTIPLE CHOICE QUESTION
30 mins • 1 pt
A 32-year-old man presents with chronic diarrhea and weight loss. Laboratory studies reveal hypoalbuminemia and evidence of protein-energy malnutrition. Upper endoscopy with small bowel biopsy shows blunted villi and increased intraepithelial lymphocytes. Which of the following best describes the primary mechanism by which dietary protein is absorbed in the small intestine?
Direct transcytosis of intact proteins across enterocytes
Hydrolysis of proteins to amino acids and small peptides, followed by passive diffusion of amino acids across the epithelial barrier
Hydrolysis of proteins to amino acids and small peptides, followed by absorption via specific transporters in the brush border membrane
Endocytosis of large protein aggregates by M cells
7.
MULTIPLE CHOICE QUESTION
30 mins • 1 pt
A professional basketball player collapsed to the ground during a game and was found to have an enlarging aortic dissection. History revealed that his father died very young with similar symptoms. His genetic and clinical testing is consistent with Marfan syndrome. Which of the following findings would be least likely in this patient?
intellectual disability
tall stature
long fingers
dislocated lens
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