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Carbohydrate Exercise Test Questions: A Study Guide, Study notes of Inorganic Chemistry

Toyota Technological Institute at Chicago (TTIC)Inorganic Chemistry

Exercise test questions related to carbohydrates to help students expand their knowledge and prepare for exams. Topics include enzymes, cell functions, and metabolic disorders. Useful for university students studying nutrition or biology.

Typology: Study notes

2011/2012

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Connexions module: m41758 1
Carbohyhdrates III
āˆ—
E. Pennington
This work is produced by The Connexions Project and licensed under the
Creative Commons Attribution License
ā€ 
Abstract
These are exercise test questions to help build your knowledge of carbohydrates lectures. This will
help expand your knowledge on the topics to maximize learning at a deeper level, build conī˜œdence and
help you succeed in the course.
1. Which of the following enzymes digests starches and glycogen into small fragments in the mouth and
intestines?
A. Alpha-amylase
B. Trehalase
C. Beta-glycosidase
D. Beta-glucoamylase
E. Sucrase-isomaltase
Table 1
2. Which of the following cells supplies the neurons with lactate to maintain ATP levels in both the fed
and fasting states?
A. Enterocytes
B. Astrocytes
C. Sertoli Cells
D. Hepatocytes
Table 2
3. Which of the following conditions is a genetic disorder that slows the rate of synthesis of bilirubin
diglucuronide inside the liver cells?
continued on next page
āˆ—
Version 1.1: Dec 15, 2011 12:54 pm US/Central
ā€ 
http://creativecommons.org/licenses/by/3.0/
http://cnx.org/content/m41758/1.1/
pf3
pf4
pf5
pf8

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Download Carbohydrate Exercise Test Questions: A Study Guide and more Study notes Inorganic Chemistry in PDF only on Docsity!

Carbohyhdrates III

E. Pennington

This work is produced by The Connexions Project and licensed under the Creative Commons Attribution License ā€ 

Abstract These are exercise test questions to help build your knowledge of carbohydrates lectures. This will help expand your knowledge on the topics to maximize learning at a deeper level, build condence and help you succeed in the course.

  1. Which of the following enzymes digests starches and glycogen into small fragments in the mouth and intestines? A. Alpha-amylase B. Trehalase C. Beta-glycosidase D. Beta-glucoamylase E. Sucrase-isomaltase

Table 1

  1. Which of the following cells supplies the neurons with lactate to maintain ATP levels in both the fed and fasting states? A. Enterocytes B. Astrocytes C. Sertoli Cells D. Hepatocytes

Table 2

  1. Which of the following conditions is a genetic disorder that slows the rate of synthesis of bilirubin diglucuronide inside the liver cells? continued on next page

āˆ—Version 1.1: Dec 15, 2011 12:54 pm US/Central ā€ http://creativecommons.org/licenses/by/3.0/

A. Hepatitis A or B B. Cirrhosis of the liver C. Hepatic carcinoma D. Gilbert's Syndrome

Table 3

  1. von Gierke's Disease is a severe disorder that causes hypoglycemia, lactic acidemia and hyperlipidemia in the fasting state. The defective enzyme is glucose-6-phosphate dehydrogenase. Which hepatic metabolic pathway IS NOT aected by this defective enzyme? A. Glycogenesis B. Glycogenolysis C. Gluconeogenesis D. Fructose degradation

Table 4

  1. Which of the following is a potential concern with feeding breast milk for the rst six months of life? A. Producing more than ve wet diapers daily B. Immunoglobulins provide immunity and help prevent food allergies C. Lack of iron will aect brain development D. Hormones, proteins, fats, minerals and vitamins are essential for growth Table 5
  2. Which of the following statements makes insulin regulation unique in the fed state? A. Stimulates the synthesis of enzymes for glycolysis in both muscle and liver cells. B. Activates both glycolysis and glycogenesis in liver and muscle cells. C. Inhibits the enzymes of glycogenolysis in muscle and liver cells. D. Opens only transmembrane GLUT4 transporters in muscle cells. Table 6
  3. Which of the following carbohydrate disorders WILL NOT impair liver function? A. Fructose Intolerance B. Fructosuria C. UDP-galactose-4-epimerase D. Galactose-1-phosphate uridyltransferase Table 7
  1. Which of the following hormone pairs stimulates the synthesis of each of the subunits of lactose synthase? A. Prolactin and cortisol B. Thyroxine and triidothyronine C. Aldosterone and progesterone D. Estrogen and human placental lactogen

Table 12

  1. Which of the following shows a potential risk of using glucuronides as therapeutic agents? A. Synergistic eect with some cancer drugs B. Higer rate of drug clearance in urine C. Antiproliferative eects on carcinogenic cells D. Increased removal of toxins/carcinogens via glucuronidation reactions E. Preventing the reversal of glucuronidation reactions via inhibition of beta-glucuronidase Table 13
  2. A week old premature male has developed physiological jaundice. He is receiving phototherapy and being carefully monitored. The current lab results show:Plasma Bilirubin (BC): 0 umol/L (Normal: < 8 umol/L)Plasma Total Bilirubin (TBIL): 332 umol/L (Normal: 85 - 200 umol/L)Unconjugated Bilirubin (BU): 332 umol/L (Normal: < 10 umol/L)Urine bilirubin: NegativeUrine urobilinogen: 0 mg/dL (Normal: 0.2 - 1 mg/dL)Fecal urobilinogen: NegativeWhich of the following will be another treatment to prevent permanent neurological damage in this patient? A. Fiber-optic blankets B. Exchange transfusion C. Intravenous immuneglobulin D. Corticosteroids

Table 14

  1. Which of the following enzymes is responsible for the synthesis of sugar alcohols involved in the development of cataracts? A. Galactokinase B. Aldolase B continued on next page

C. Fructokinase D. Phosphorylase E. Aldol reductase

Table 15

  1. Which of the following shows the health benets of insoluble bers? A. Form a gel that can be degraded by normal ora into gases B. Slows the absorption of glucose; thus, regulating blood sugar levels C. Prevents heart disease by reducing total and LDL cholesterol levels D. Draws water inside the intestines softening the stool for regularity E. Fiber fermentation produces short fatty acids for energy Table 16
  2. A 7 days old full-term male is losing weight. He vomits and has diarrhea everytime he ingests breast milk. Current lab results show: impaired liver function, hypergalactosemia, hyperchloremic metabolic acidosis, hyperaminoaciduria and high urinary galactitol levels. Which of the following are the two possible defective hepatic enzymes consistent with these lab results in this patient? A. Aldolase B and fructokinase B. Galactokinase and aldose reductase C. Phosphoglucomutase and glucose-6-phosphatase D. Galactose-1-phosphate uridyltransferase and UDP- galactose-4-epimerase Table 17
  3. Which of the following molecules may turn the urine dark in cases of intra-hepatic and post-hepatic

jaundice? continued on next page

Table 22

  1. Which of the following disorders aects the degradation of glycogen in muscle cells? A. Lewis' Disease B. Cori's Disease C. Hers' Disease D. Andersen's Disease E. McArdle's Disease Table 23
  2. A 6 month old female is failing to thrive. Lab results show: hypoglycemia and hyperketonemia. She is diagnosed with Lewis' Disease. Which of the following is the defective enzyme in this disorder? A. Muscle glycogen synthase B. Muscle glycogen phosphorylase C. Hepatic glycogen phosphorylase D. Hepatic glycogen synthase

Table 24

  1. A 25 year old Hispanic female suers from fatigue, sporadic episodes of pain in the extremities, fever, jaundice and recurrent infections. Lab results show:Serum iron: 38 mcg/dL (Normal: 60 -170 mcg/dL )Plasma Conjugate Bilirubin (BC): 0 umol/L (Normal: < 8 umol/L)Plasma Total Bilirubin (TBIL): 85 umol/L (Normal: < 18 umol/L)Plasma Unconjugated Bilirubin (BU): 85 umol/L (Normal: < 10 umol/L)AST: 25 U/L (Normal: 5 - 45 U/L)ALP: 145 U/L (Normal: 50 - 260 U/L)Urine bilirubin: NegativeUrine urobilinogen: 4 mg/dL (Normal: 0.2 - 1 mg/dL)Fecal urobilinogen: 386

mg/24 hours (Normal: 50 to 300 mg/24 hours)Blood smear: Which of the following causes is consistent with these lab results? continued on next page

A. Sickle cell anemia B. Hepatitis C. Cholangitis D. Cirrhotic liver

Table 25