-
Home
- Biochemistry exercises
- Biochemistry exercises
- Comprehensive v
| 21. Which type of glucose transporters are synthesized under the control of hypoxia inducing factor-1 inside the neurons? |
| A. |
GLUT2 and GLUT4 |
| B. |
GLUT1 and GLUT3 |
| C. |
GLUT5 and GLUT8 |
| D. |
GLUT2 and GLUT7 |
| E. |
GLUT5 and GLUT7 |
| 22. Which of the following glucose transporters can facilitate the release of glucose, galactose and fructose from the intestinal cells into the hepatic portal vein? |
| A. |
GLUT1 |
| B. |
GLUT2 |
| C. |
GLUT3 |
| D. |
GLUT4 |
| E. |
GLUT5 |
| 23. Patients can develop cataracts from the build-up of sugar alcohols inside the lens of the eyes. Which of the following enzymes has the capability to synthesize sugar alcohols from either excess glucose or galactose? |
| A. |
Fructokinase |
| B. |
Galactokinase |
| C. |
Aldose reductase |
| D. |
Phosphoglucomutase |
| E. |
Glucose-6-phosphatase |
| 24. Which of the following hormones stimulates the synthesis of alpha-lactalbumin? |
| A. |
Prolactin and cortisol |
| B. |
Glucagon and epinephrine |
| C. |
Estrogen and progesterone |
| D. |
Testosterone and aldosterone |
| E. |
Thyroid and human placental lactogen |
| 25. Which of the following classes of molecules make the composition of human breast milk unique from commercially based formulas? |
| A. |
Proteins |
| B. |
Fats |
| C. |
Vitamins |
| D. |
Carbohydrates |
| E. |
Immunoglobulins |
| 26. Which of the following statements about the anticancer properties of glucuronides is
INCORRECT ? |
| A. |
Inhibit beta-glucuronidase to prevent the release of carcinogens in the body. |
| B. |
Decrease the therapeutic effect of anticancer drugs administered to patients. |
| C. |
Increase the rate of glucuronidation reactions to clean toxic molecules faster. |
| D. |
Suppress cell proliferation, staging and metastasis by inducing cell apoptosis. |
| E. |
Effective in treating lung, skin, liver, breast, colon, bladder and prostate cancers. |
| 27. A 6 year old boy’s lab results show: hypoglycemia, jaundice, hemorrhage, hepatomegaly, and hyperuricemia. He is diagnosed with fructose intolerance. Which of the following hepatic enzymes is defective in this patient? |
| A. |
Galactokinase |
| B. |
Triose Kinase |
| C. |
Hexokinase |
| D. |
Aldolase B |
| E. |
Fructokinase |
| 30. A 6 month old female is failing to thrive. Lab results show: hypoglycemia and hyperketonemia. She is diagnosed with Lewis' Disease. Which hepatic enzyme is defective in this patient? |
| A. |
Debranching enzyme |
| B. |
Glycogen phosphorylase |
| C. |
Branching enzyme |
| D. |
Glycogen synthase |
| E. |
Glucose-6-phosphatase |
| 31. Andersen's and Cori's Disease are two glycogen disorders that produces hypoglycemia and altered branches of glycogen in both the fed and fasting states, respectively. In which of the following tissues can these disorders be the main cause for hypoglycemia? |
| A. |
Muscle |
| B. |
Liver |
| C. |
Intestines |
| D. |
Kidneys |
| E. |
Heart |
| 32. Which of the following shows the health benefits of insoluble fibers? |
| A. |
Form a gel that can be degraded by normal flora 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 |
| 33. Which of the following mechanisms
IS NOT part of the process of glycogen degradation in the muscle cells? |
| A. |
Influx of calcium ions from nerve impulses |
| B. |
High levels of AMP from muscle contraction |
| C. |
Epinephrine binding to muscle cells beta receptors |
| D. |
Glucagon cAMP signal transduction cascade |
| E. |
Activation of glycogen phosphorylase |
| 34. 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 defective enzymes would be consistent with this patient lab results? |
| A. |
Aldolase B |
| B. |
Galactokinase |
| C. |
Aldose reductase |
| D. |
UDP-glucuronyltransferase |
| E. |
Galactose-1-phosphate uridyltransferase |
Source:
OpenStax, Biochemistry exercises. OpenStax CNX. Apr 06, 2016 Download for free at https://legacy.cnx.org/content/col11386/1.4
Google Play and the Google Play logo are trademarks of Google Inc.
