In a hospital laboratory, a 10.0 mL sample of gastric juice, obtained several hours after a meal, was titrated with 0.1 M NaOH to neutrality; 7.2 mL of NaOH was required. The patient’s stomach contained no ingested food or drink, thus assume that no buffers were present. What was the pH of the gastric juice?

TLS Online TPP Program

#Question id: 19464

#Part-A Aptitude & General Biotechnology

Which is the common fixative agent that crosslinks amino groups on adjacent molecules

TLS Online TPP Program

#Question id: 19465

#Part-A Aptitude & General Biotechnology

In microscopy histological samples are often stained with which basic dye

TLS Online TPP Program

#Question id: 19466

#Part-A Aptitude & General Biotechnology

Hematoxylin is a basic dye which which basically bind to which amino acids?

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#Question id: 19467

#Part-A Aptitude & General Biotechnology

Eosin is an acidic dye which basically binds to which molecules?

1. DNA

2. Carbohydrate

3. Glutamic acid

4. Aspartic acid

5. Asparagine

Which combination of the above options are correct?

TLS Online TPP Program

#Question id: 19484

#Part-B Specialized Branches in Biotechnology

Estimate the degree of reduction of Methane, Glucose and Ethanol?

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#Question id: 19486

#Part-B Specialized Branches in Biotechnology

The growth of S.cerevisiae on glucose under anaerobic conditions can be described by the following reaction:

C₆H₁₂O₆ + aNH₃ → 0.59 CH_1.64N_0.16O_0.52 (biomass) + 0.43 C₃H₈O₃ + 1.54CO₂ + 1.3C₂H₅OH + 0.036H₂O 

and determine the product yield coefficient Y etoh/s and determine coefficient a.