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Listening Quiz: Briefing Về Chuẩn Bị Thuốc Thử Assay – Advanced Level
Th2 10, 2024
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bởi
Anna Phạm
trong
Tiếng Anh dành cho Nhà sinh học (English for Biologist)
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1.
What is the conversation mainly about?
How to schedule a laboratory meeting
How to prepare three reagents for a new assay protocol
Why the team needs a new computer system
How to clean laboratory equipment after use
Explanation:
Linda explains a new assay protocol and gives details for preparing three reagents, including pH, volume, concentration, mixing, and storage.
2.
What pH should the buffer solution have?
8.2
7.4
7.0
6.8
Explanation:
Linda states that the first reagent, a buffer solution, should have a pH of exactly 7.4.
3.
How much enzyme should be added per sample?
75 microliters
25 microliters
50 microliters
100 microliters
Explanation:
Linda says to add 50 microliters per sample for the enzyme mix.
4.
What concentration is required for the substrate solution?
1 millimolar
5 millimolar
2 millimolar
10 millimolar
Explanation:
Linda says the third reagent, the substrate solution, should be used at exactly 2 millimolar concentration.
5.
Which instruction suggests the reagents should be handled carefully rather than rushed?
Prepare three reagents carefully
Use 2 millimolar concentration exactly
Store them at 4 degrees Celsius for two days
Mix gently but thoroughly
Explanation:
The instruction to mix the reagents gently but thoroughly implies careful handling during preparation.
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