The enzyme which converts optically active isomers of lactic acid to the optically inactive racemic mixture is isomerase racemase invertase dehydrogenase TRUE ANSWER : ? YOUR ANSWER : ?
The Candida species require fermentation equipment lined with plastic because they are extremely sensitive to traces of iron none of these traces of nickel traces of cobalt TRUE ANSWER : ? YOUR ANSWER : ?
Why high concentration of sugars are not employed in the fermentation medium? Calcium lactate crystallizes from the medium and slows down the process of fermentation None of these High sugar concentration itself crystallizes Calcium lactate is not produced TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following when used in proper concentration stimulates the Ascomycetes fermentation of vitamin B12 and can be used to counteract toxicity of iron in Candida species? Ni Co Zn Ca TRUE ANSWER : ? YOUR ANSWER : ?
Cycloserine may be isolated from the cultures of S. lavendulae S. garyphalus All of these S. orchidaceus TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following micro organism utilizes lactose as a carbon source in production of lactic acid from whey media? Lactobacillus delbrueckii Lactobacillus bulgaricus Lactobacillus pentosus Leuconostoc mesenteroides TRUE ANSWER : ? YOUR ANSWER : ?
The commonly used media for submerged bacterial fermentation at commercial scale is beet molasses none of these liver extract germinated seed TRUE ANSWER : ? YOUR ANSWER : ?
The strain C. glutamicum can be used for the production of L-phenylalanine all of these L-glutamine L-ornithine TRUE ANSWER : ? YOUR ANSWER : ?
Rickes et al. recovered active crystalline vitamin B12 from the culture of Bacillus megaterium Streptomyces olivaceus Streptomyces griseus Streptomyces lactis TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following organism is utilized for the production of D-L-alanine? C. glutamicum Arthrobacter paraffineus Microbacterium ammoniaphilum Brevibacterium flavum TRUE ANSWER : ? YOUR ANSWER : ?