KROK 1 2013 – Question 99 · KROK (Medicine) · Biological Chemistry
A 20-year-old male patient complains of general weakness, rapid fatigability, irritability, decreased performance, bleeding gums, petechiae on the skin. What vitamin deficiency may be a cause of these changes?
- A. Thiamine
- B. Riboflavin
- C. Ascorbic acid
- D. Retinol
- E. Folic acid
Hint
Bleeding from the gums and petechiae suggest weak vessel walls and connective tissue; ask which vitamin supports synthesis of the main structural protein there.
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 is known that the monoamine oxidase (MAO) enzyme plays an important part in the metabolism of catecholamine neurotransmitters. In what way does…
- Enzymatic jaundices are accompanied by abnormal activity of UDP-glucuronyl transferase. What compound is accumulated in blood serum in case of these…
- For the study of serum proteins various physical and physicochemical methods can be used. In particular, serum albumins and globulins can be…
- Inherited diseases, such as mucopolysaccharidoses, are manifested in metabolic disorders of connective tissue, bone and joint pathologies. The sign…
- Infectious diseases are treated with antibiotics (streptomycin, erythromycin, chloramphenicol). They inhibit the following stage of protein synthesis:
- Diseases of the respiratory system and circulatory disorders impair the transport of oxygen, thus leading to hypoxia. Under these conditions the…