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Listening Quiz: Chiết Xuất Axit Nucleic Cho Xét Nghiệm Tải Lượng Vi-rút HIV – Easy Level
Th3 7, 2024
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bởi
Anna Phạm
trong
Tiếng Anh Y Tế
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1.
What is the conversation mainly about?
Cleaning laboratory equipment after use
Planning an HIV treatment schedule
Reviewing a patient’s lab results
Performing nucleic acid extraction for an HIV viral load assay
Explanation:
Laura and Daniel discuss the step-by-step process of nucleic acid extraction for an HIV viral load assay.
2.
What does Laura add first to the sample?
Elution buffer
Wash buffer
Ethanol
Lysis buffer
Explanation:
Laura says, “First, I add the lysis buffer to the sample.”
3.
How long did Laura mix the sample after adding ethanol?
Until centrifuging was finished
For one minute
Until it turned clear
For two minutes
Explanation:
Laura states that she “mixed it gently for one minute.”
4.
What does Laura do after centrifuging the spin column?
She washes the column with wash buffer twice
She loads the sample onto the column
She documents the work order
She adds lysis buffer again
Explanation:
After centrifuging the column, Laura says she washes it with wash buffer twice.
5.
How are the nucleic acids finally collected?
By adding elution buffer and centrifuging
By loading the sample onto the spin column
By adding ethanol and mixing gently
By washing the column twice
Explanation:
Laura explains that she adds elution buffer and then centrifuges to collect the nucleic acids.
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