Which of following is the best choice for storage of extracted DNA sample:
A: ultrapure water
B: TE buffer
C: 75% ethanol
D: TBE buffer
A: ultrapure water
B: TE buffer
C: 75% ethanol
D: TBE buffer
举一反三
- Which<br/>of following is the best choice for storage of extracted DNA<br/>sample:____ A: ultrapure<br/>water B: TE<br/>buffer C: 75%<br/>ethanol D: TBE<br/>buffer
- Regarding the determination of the effective buffer range of the buffer solution, which of the following is not the factor we should consider A: pH= pKa±1 B: The buffer ratio is between 0.1 and 10 C: Large buffer capacity D: High total concentration
- Which is the correct description of a pinned buffer in the database buffer cache（） A: The buffer is currently being accessed. B: The buffer is empty and has not been used. C: The contents of the buffer have changed and must be flushed to the disk by the DBWn process. D: The buffer is a candidate for immediate aging out and its contents are synchronized with the block contents on the disk.
- 提取出的DNA样品最好保存在（）中 A: 超纯水 B: TE缓冲液 C: 75%乙醇 D: TBE缓冲液
- (3)Choose the factors that can not determine the capacity of a buffer from the following a. pH of the buffer b. Concentration of buffer-component reservoirsc. Buffer-component ratio d. Buffer range A: a B: b C: c D: d