A: does not melt at room temperature
B: solidifies at 75℃
C: is not usually decomposed by microorganisms
D: both a and c
举一反三
- A gar is superior to gelatin as a solidifying agent because agar ( ). A: does not melt at room temperature B: solidifies at 75℃ C: is not usually decomposed by microorganisms D: oth a and c
- Which of following is the merit of agar as a solidifying agent for culture medium? A: Transparent B: Not degradable for most microorganisms C: Melt at 90-100 degree C D: All above
- Which of following is the merit of agar as a solidifying agent for culture medium? A: Not degradable for most microorganisms B: Melt at 90-100 degree C C: All the three choices D: Transparent
- 中国大学MOOC: Which of following is the merit of agar as a solidifying agent for culture medium?
- The gelatin solution has required _________. A: viscosity B: temperature C: moisture D: humidity
内容
- 0
In no way ______ the amount of heat. A: the temperature equals B: does the temperature equal C: the temperature equal D: does the temperature equals
- 1
Where does a lecturer usually offer the topic of a lecture? A: The begining part B: The body part C: The closing part D: Both A and C
- 2
How does Mr. White feel about his room? A: very comfortable and quite B: good service and facilities C: both A and B
- 3
The gel formed by methyl cellulose and gelatin can form a gel at a high temperature or a low temperature and is in the form of a solution at a medium temperature, which is called. A: concave gel B: convex gel C: hot gel D: cold gel
- 4
What does not conform to the characteristics of growth factors is that () A: necessary for the growth of microorganisms B: little demand C: microorganisms cannot synthesize by themselves D: organic nutrient