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TLS Online TPP Program

#Question id: 380

The Henderson-Hasselbalch equation:

#XL - S Microbiology

  1. allows the graphic determination of the molecular weight of a weak acid from its pH alone.

  2. is equally useful with solutions of acetic acid and of hydrochloric acid.

  3. relates the pH of a solution to the pKa and the concentrations of acid and conjugate base.

  4. does not explain the behavior of di- or tri-basic weak acids

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TLS Online TPP Program

#Question id: 19518

#XL - P Chemistry

In a dry cell, which of the following is the electrolyte?
TLS Online TPP Program

#Question id: 420

#XL - Q Biochemistry

The structure of NAD+ does not include:
TLS Online TPP Program

#Question id: 3781

#XL - Q Biochemistry

Hershey and Chase used a DNA-based virus for their work. How might the results have been different if they had used an RNA virus?
TLS Online TPP Program

#Question id: 27363

#XL - T Zoology

Match the types of RNA in Group I with their corresponding function in Group II
TLS Online TPP Program

#Question id: 10572

#XL - T Zoology

In 2005, the United States had a population of approximately 295,000,000 people. If the birth rate was 13 births for every 1,000 people, approximately how many births occurred in the United States in 2005?