KROK 1 2008 – Question 8 · KROK (Medicine) · Biological Chemistry
Researchers isolated 5 isoenzymic forms of lactate dehydrogenase from the human blood serum and studied their properties. What property indicates that the isoenzymic forms were isolated from the same enzyme?
- A. Catalyzation of the same reaction
- B. The same molecular weight
- C. The same electrophoretic mobility
- D. The same physicochemical properties
- E. Tissue localization
Hint
Think about what defines isoenzymes as forms of one enzyme, as opposed to properties that actually differ between them and allow their separation.
The answer, the explanation and a note on every option are available once you log in. The account is free: topic tests, a mock exam, mistake review and statistics.
More questions on Biological Chemistry
- It was proved that a molecule of immature mRNA (precursor mRNA) contained more triplets than amino acids found in the synthesized protein. The…
- A patient has low rate of magnesium ions that are necessary for affixion of ribosomes to the endoplasmic reticulum. It is known that it causes…
- A 20 year old patient complains of general weakness, dizziness, quick fatigability. Blood analysis results: Hb - 80 g/l. Microscopical examination…
- A patient has yellow skin colour, dark urine, dark-yellow feces. What substance will have strengthened concentration in the blood serum?
- A patient consulted a doctor about symmetric dermatitis of open skin areas. It was found out that the patient lived mostly on cereals and ate too…
- A 46 year old patient applied to a doctor complaining about joint pain that becomes stronger the day before weather changes. Blood examination…