Q- Which of the following tests is the most accurate for the 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- PCR of cerebrospinal fluid is the most accurate and preferred diagnostic test for herpes encephalitis because it directly detects viral DNA. MRI may show temporal lobe abnormalities, but PCR is more definitive. Serology and viral culture are not reliable for acute diagnosis.
Q- Which one of the following types of cell secretions involves exocytosis?
A- Apocrine secretion
B- Holocrine secretion
C- Merocrine secretion
C- Merocrine secretion- Merocrine secretion releases its products by exocytosis without any loss of cellular material. Apocrine secretes part of the cell’s apex, and holocrine secretion involves complete cell rupture.
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%- In double-stranded DNA:
G pairs with C, so if G = 20%, then C = 20%.
That accounts for 40% of the bases.
The remaining 60% must be A + T, and since A = T, each is 30%.
It is good to be hard so, when you know the hard, anything else will be easy. Thank you dear dr.
Hard questions
What is mci?
Sir can you upload mci oriented questions please
I hope so too. Good luck
I hope to get scor in USML
Hard questions