Under which of the following conditions can cells be preserved for a long time?
A: -196℃
B: 4℃
C: -20℃
D: -80℃
E: Room temperature.
A: -196℃
B: 4℃
C: -20℃
D: -80℃
E: Room temperature.
举一反三
- Which of the following temperature is better for cell thawing after cryopreservation? A: 37℃ B: 4℃ C: -196℃ D: -20℃ E: -80℃ F: Room temperature.
- (4)、 [单选题] (2分) A: sound scientific theory should be one that _________.A、works not only under one set of conditions at one time, but also under the same conditions at other times. B: does not allow any changes even under different conditions. C: can be used for many purposes. D: leave no room for improvement.
- The optimal temperature of preserving virus strain is () A: -70℃ B: -20℃ C: 4℃ D: room temperature E: 37℃
- 3. The three-phase point of water is a temperature and pressure condition under which water, ice and steam can coexist. The corresponding temperature is 0.01℃. Under this temperature, the external pressure of water is（ ） A: 101.325kPa B: 0.6106kPa C: 100kPa D: 1000kPa
- The<br/>optimal temperature of preserving virus stain is () A: -70℃ B: -20℃ C: 4℃ D: room<br/>temperature E: none<br/>of the above