Practice Questions

TLS Online TPP Program

#Question id: 380

The Henderson-Hasselbalch equation:

#Unit 1. Molecules and their Interaction Relevant to Biology

allows the graphic determination of the molecular weight of a weak acid from its pH alone.
is equally useful with solutions of acetic acid and of hydrochloric acid.
relates the pH of a solution to the pKa and the concentrations of acid and conjugate base.
does not explain the behavior of di- or tri-basic weak acids

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TLS Online TPP Program

#Question id: 23813

#General Aptitude

Which of the following required large computer memory?

TLS Online TPP Program

#Question id: 4948

#Unit 11. Evolution and Behavior

RNA molecules can both carry genetic information and be catalytic. This supports the proposal that

TLS Online TPP Program

#Question id: 21809

#Unit 12. Applied Biology

Which one of the following sensors measures the potential current?

TLS Online TPP Program

#Question id: 10810

#Unit 6. System Physiology – Plant

A mechanism for preventing sap loss entails closing sieve plate pores with callose, which is

TLS Online TPP Program

#Question id: 12530

#Unit 6. System Physiology – Plant

Some given hormones is also called a ubiquitous hormone?

c) Abscisic acid

d) Brassinosteroids