食品细胞工程答案2023

第四章测试

1.（ ）refers to that the two strains with large phenotypic differences were genetically recombined by means of sexual reproduction, parasexual reproduction and cell fusion, etc. to achieve the combination of good traits of the parents and obtain new strains with improved yield and quality.
A:Hybrid breeding
B:Natural breeding
C:Genetic engineering breeding
D:Mutation breeding

答案:A
2.The dissolved oxygen of the fermentation solution can be increased by ( ).
A:all above
B:increasing the pressure of the fermenter
C:filling the fermentation broth with pure oxygen
D:improving the volumetric oxygen transfer coefficient
3.The fermentation process can be divided into ( ) according to the feeding method.
A:aerobic fermentation
B:continuous fermentation
C:batch fermentation
D:batch fed-batch fermentation
4.The optimal combination of bacteria for yoghurt production is Lactobacillus bulgaricus and Lactobacillus plantarum. ( )
A:错 B:对 5.Monod equation shows that increasing the concentration of limiting substrate can obviously increase the specific growth rate of cells when the concentration of limiting substrate is high. ( )
A:对 B:错