Repeated USMLE Questions Step 1- 359

Q- If the prevalence of a disease is 10%, what is the chance that randomly selected 3 persons out of this population will all have the disease?

A- 0.1

B- 0.0.1

C- 0.001

D- 0.0001

C- 0.001- This is calculated by 1/10 x 1/10 x 1/10 = 1/1000

Q- Which one of the following neoplasms is the most likely related to HIV infection?

A- Burkitt’s lymphoma

B- Hodgkin’s lymphoma

C- Kaposi sarcoma

D- Myelocytic leukemia

C- Kaposi sarcoma

Q- Conversion of ethanol to acetate will result in increase production of which of the following?

A- NAD

B- NADH

C- Oxaloacetate

D- Pyruvate

B- NADH