Which of the following substance is employed to neutralize the lactic acid as it

CuriousTab

C Programming C# Programming C++ Programming Database Java Programming Networking

Biochemical Engineering Biochemistry Biotechnology Chemical Engineering Civil Engineering Computer Science Digital Electronics Electrical Engineering Electronics Electronics and Communication Engineering Mechanical Engineering Microbiology Technical Drawing

Current Affairs General Knowledge

Data Interpretation Logical Reasoning Non Verbal Reasoning Verbal Ability Verbal Reasoning

AIEEE Bank Exams CAT GATE IIT JEE TOEFL

Analyst Bank PO Database Administrator IT Trainer Network Engineer Project Manager Software Architect

Discussion

Home ‣ Microbiology ‣ Industrially Useful Microbial Processes Comments

Question
Which of the following substance is employed to neutralize the lactic acid as it is produced (because lactic acid bacteria do not tolerate high concentrations of acid?
Options
A. CaCO₃
B. (NH₄)₂ HPO₄
C. MgSO₄
D. Na₂SO₄

Correct Answer

CaCO₃

Industrially Useful Microbial Processes problems

Search Results

1. The enzyme which converts optically active isomers of lactic acid to the optically inactive racemic mixture is
Options
A. isomerase
B. racemase
C. dehydrogenase
D. invertase

Discuss

Correct Answer: racemase

2. Which of the following is known for greater stability of the riboflavin producing capacity?
Options
A. Eremothecium ashbyii
B. Ashbya gossypii
C. Candida flareri
D. None of these

Discuss

Correct Answer: Ashbya gossypii

3. The early assay employed for measuring penicillin activity were based upon the quantity required to prevent growth of S. aureus over
Options
A. 20 mm diameter zone using the cylinder plate method of assay
B. 24 mm diameter zone using the cylinder plate method of assay
C. 200 mm diameter zone using the cylinder plate method of assay
D. None of the above

Discuss

Correct Answer: 24 mm diameter zone using the cylinder plate method of assay

4. Which of the following is a heterofermentative micro-organism?
Options
A. Leuconostoc mesenteroides
B. Lactobacillus delbrueckii
C. Lactobacillus bulgaricus
D. Lactobacillus pentose

Discuss

Correct Answer: Lactobacillus delbrueckii

5. The maximum concentration of ethanol that is achieved by successive distillation of fermentation broth in continuous stills is
Options
A. 60%
B. 95%
C. 70%
D. 99%

Discuss

Correct Answer: 95%

6. Most productive species among the different vitamin B₁₂ producing Pseudomonads is
Options
A. P. denitrificans
B. P. ovalis
C. P. aureofaciens
D. none of these

Discuss

Correct Answer: P. denitrificans

7. Which species from the followings is resistant to methyl tryptophan?
Options
A. Candida utilis
B. E. coli
C. B. subtilis
D. Hansenula anomala

Discuss

Correct Answer: B. subtilis

8. Which of the following was the first amino acid to be produced commercially?
Options
A. L-glutamic acid
B. L-lysine
C. L-cystine
D. L-methionine

Discuss

Correct Answer: L-lysine

9. The commonly used media for submerged bacterial fermentation at commercial scale is
Options
A. beet molasses
B. liver extract
C. germinated seed
D. none of these

Discuss

Correct Answer: beet molasses

10. Rickes et al. recovered active crystalline vitamin B₁₂ from the culture of
Options
A. Streptomyces griseus
B. Bacillus megaterium
C. Streptomyces olivaceus
D. Streptomyces lactis

Discuss

Correct Answer: Streptomyces griseus

Comments

Enter a new Comment

More in Microbiology:

Actinomycetes and Non Sporing Anaerobes Algae Antibody Antigen Antibody Reaction Antimicrobial Chemotherapeutic Agents Bacillus Bacteria Bacteria Morphology Bacteriophages Brucella Cell Cultivations Cell Cultures and Characteristics Clostridium DNA Replication DNA Sequencing, Mutation and Repair Energy Release and Conservation Enzyme Reaction Enzymes Regulation Fish and Sea Foods Food Illness Fruits and Vegetables Fungi - Molds and Yeasts Growth and Nutrition of Bacteria Heated Canned Foods Hepatitis Viruses Identification of Bacteria Immune Response Immune System Industrially Useful Microbial Processes Microbes in Aquatic Environment Microbial Genetics Microbial Metabolism Microbial Recombination and Gene Transfer Microbiology of Foods Microbiology of Soils Microbiology of Waste Water Micro Organisms Microorganisms and Disease Milk and Milk Products Miscellaneous Foods Mycobacterium Nucleic Acid Structure Physical and Chemical Agents Polymerase Chain Reaction Poultry, Egg and Meat Poxviridae and Picronaviridae Protozon Pseudomonas and Burkholderia Retroviridae Rhabdoviridae, Caliciviridae and Astroviridae Sauerkraut and Pickles Spirochacter and Enterobacteriaceac Staplylococcus Streptococcus Transcription Translation and Regulation Vibrio, Aeromonas and Plesiomonas Viruses Viruses From Animal and Plants Viruses in Eukaryotes Wine and Beer

Aptitude

Time and Distance
Volume and Surface Area
Problem on Trains
Permutation and Combination

Engineering

Civil Engineering
Computer Science
Mechanical Engineering
Technical Drawing

Programming

C Programming
C# Programming
C++ Programming
Java Programming

Reasoning

Logical Reasoning
Non Verbal Reasoning
Verbal Ability
Verbal Reasoning

CuriousTab

CuriousTab

Discussion

Which of the following substance is employed to neutralize the lactic acid as it is produced (because lactic acid bacteria do not tolerate high concentrations of acid?

Industrially Useful Microbial Processes problems

Search Results

More in Microbiology:

Aptitude

Engineering

Programming

Reasoning

Links

Social