KROK 1 2015 – Question 120 · KROK (Medicine) · Biological Chemistry
During cell division DNA replication occurs after a signal is received from the cytoplasm, then a certain portion of the DNA helix unwinds and splits into two individual strains. What enzyme facilitates this process?
- A. Restrictase
- B. Helicase
- C. Ligase
- D. DNA polymerase
- E. RNA polymerase
Hint
Distinguish the enzyme that prepares the template by opening the double helix from those that copy, join or cut DNA, or that transcribe it.
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
- A therapeutist has an appointment with a 40-year-old patient complaining of recurrent pain attacks in his hallux joints and their swelling. Urine…
- A 28-year-old patient undergoing treatment in a pulmonological department has been diagnosed with pulmonary emphysema caused by splitting of…
- A patient, who has been suffering for a long time from intestine disbacteriosis, has increased hemorrhaging caused by disruption of…
- A 6-year-old child suffers from delayed growth, disrupted ossification processes, decalcification of the teeth. What can be the cause?
- Cholesterol content in blood serum of a 12-year-old boy is 25 mmol/l. Anamnesis states hereditary familial hypercholesterolemia caused by synthesis…
- Obesity is a common disease. The aim of its treatment is to lower content of neutral fats in the body. What hormone-sensitive enzyme is the most…