Repeated USMLE Questions Step 1- 328

Q- Which of the following is the percentage of thymine in a DsDNA if it contains 20% guanine?

A- 20%

B- 30%

C- 40%

D- 50%

B- 30%



Q- Which one of the following types of cell secretions involves exocytosis?

A- Apocrine secretion

B- Holocrine secretion

C- Merocrine secretion

C- Merocrine secretion



Q- Which of the following tests is the most accurate for diagnosis of herpes encephalitis?

A- MRI of the brain

B- PCR of CSF

C- Serological studies for herpes

D- Viral culture of CSF

B- PCR of CSF



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