MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Enzyme Technology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Head injures can be detected by _______ |
| A. | increase of CK<sub>2</sub> in blood |
| B. | increase of CK<sub>1</sub> in CSF |
| C. | elevated levels of CK<sub>3</sub> in serum |
| D. | LDH<sub>2</sub> and LDH<sub>3</sub> increase |
| Answer» C. elevated levels of CK<sub>3</sub> in serum | |
| 2. |
Which of the following is not a clinical application of creatine kinase isoenzyme? |
| A. | Hypothyroidism |
| B. | Damage of heart tissue |
| C. | Myopathy |
| D. | Leukemia |
| Answer» C. Myopathy | |
| 3. |
Which is the only tissue which has mixed MB (CK2) isoenzyme? |
| A. | Prostate |
| B. | Liver |
| C. | Cardiac tissue |
| D. | Spleen |
| Answer» D. Spleen | |
| 4. |
CK1: brain:: CK3: _________________ |
| A. | Kidney |
| B. | Spleen |
| C. | Skeletal muscle |
| D. | Cardiac tissue |
| Answer» E. | |
| 5. |
Which of the following is not true for creatine kinase? |
| A. | Its activity is greatest in striated muscle, brain and heart tissue |
| B. | It catalyzes L-lactate to pyruvate |
| C. | It is a dimer |
| D. | It has three isoenzymes |
| Answer» C. It is a dimer | |
| 6. |
Which of the following is not isoenzyme form of alkaline phosphatase? |
| A. | Bone |
| B. | Muscle |
| C. | Placenta |
| D. | Intestine |
| Answer» C. Placenta | |
| 7. |
Which of the following is not an isoenzyme of acid phosphatase? |
| A. | Prostate |
| B. | Liver |
| C. | Salivary |
| D. | Spleen |
| Answer» D. Spleen | |
| 8. |
LDH4 and LDH5: Bacterial meningitis:: LDH1 and LDH3: ___________ |
| A. | Kidney malignancies |
| B. | Myocardial infarction |
| C. | Intracranial hemorrhage |
| D. | Viral meningitis |
| Answer» E. | |
| 9. |
Which of the following is not associated with increase of LDH activity in urine? |
| A. | Megaloblastic anemia |
| B. | Chronic glomerulonephritis |
| C. | Diabetic nephrosclerosis |
| D. | Kidney malignancies |
| Answer» B. Chronic glomerulonephritis | |
| 10. |
An increase in serum level of LDH1 relative to LDH2 is an indication of ___________ |
| A. | muscular dystrophy |
| B. | leukemia |
| C. | myocardial infarction |
| D. | hepatitis with jaundice |
| Answer» D. hepatitis with jaundice | |
| 11. |
Which of the following is false for lactate dehydrogenase (LDH)? |
| A. | It is a tetrameric enzyme |
| B. | It catalyzes reversible phosphorylation of creatinine to creatinine phosphate by ATP |
| C. | It has five isoenzymes |
| D. | It is made up of two polypeptides |
| Answer» C. It has five isoenzymes | |
| 12. |
Which of the following property is not shown by isoenzyme? |
| A. | Sigmoidal shaped curve |
| B. | Electrophoretic mobility |
| C. | Kinetic properties |
| D. | Aminoacid composition |
| Answer» B. Electrophoretic mobility | |
| 13. |
Multiple forms of the same enzyme is referred to as __________ |
| A. | allosteric enzyme |
| B. | biosensor |
| C. | isoenzyme |
| D. | effectors |
| Answer» D. effectors | |
| 14. |
Which of the following is not true for isoenzymes? |
| A. | Many enzymes occur in several molecular forms called isoenzymes |
| B. | Different isoenzyme catalyze same chemical reaction, but differ in their primary structure and kinetic properties |
| C. | Isoenzymes are coded by different gene |
| D. | Enzymes having other site |
| Answer» E. | |